Hesitating XJ
10-15-2003, 10:02 AM
#21
Guest
Posts: n/a
Re: Hesitating XJ
"Will Honea" <whonea@codenet.net> wrote in message news:<JxX2tWiP5BNp-pn2-Ed4QvuHbXFqO@anon.none.net>...
> I would start by cleaning the connectors around the throttle body -
> Throttle Position Sensor (TPS), Idle Air Control (IAC) - then get the
> MAP Sensor (up on the firewall) and the CPS connector (next to the
> fiewall pretty much under the MAP Sensor and behind the fuel rail).
> Wash them out with WD40, scrub with a stiff brush, blow dry and
> re-connect. Use a bit of silicone grease on the connector seals when
> you put them back. That might cure the problem and save you some
> swearing and skinned knuckles. BTW, for the CPS, I drop the front end
> of the front drive shaft so that I have more room to work. That CPS
> is a PITA to reach and I still have to use a couple of long extensions
> but moveing the shaft out of the way helps a lot.
>
> On Wed, 15 Oct 2003 00:45:05 UTC elmangle@hotmail.com (Rod Frazier)
> wrote:
>
> > "Kevin in San Diego" <kevin_hedstrom@yahoo.com> wrote in message news:<BtLib.70216$gv5.66526@fed1read05>...
> > > It couldnt hurt to carry a fuel pump relay.
> > > KH
> > >
> > > "Will Honea" <whonea@codenet.net> wrote in message
> > > news:JxX2tWiP5BNp-pn2-Cb0Pf6ZyF9NZ@ANON.NONE.NET...
> > > > On Mon, 13 Oct 2003 17:28:14 UTC elmangle@hotmail.com (Rod Frazier)
> > > > wrote:
> > > >
> > > > > Help. We have an '89 XJ with the 4.0 that we keep at our winter home
> > > > > in Mexico and it has recently started hesitating at light load in
> > > > > overdrive. Feels like the ignition is completely turned off for just
> > > > > an instant. It may happen once or twice in 20 miles or it may do it
> > > > > every minute or so. If we shift out of overdrive and increase the
> > > > > revs a bit, it either doesn't do it or we can't feel it because of the
> > > > > increased engine speed. I've replaced the plugs, wires, cap and
> > > > > rotor, and run through two cans of injection cleaner and checked all
> > > > > the vital connectors, including the one to the CPS, which has given me
> > > > > trouble in the past. I'm leaving for Mexico this week and would like
> > > > > to take down with me any replacement parts that might solve the
> > > > > problem. Anyone run across this phenomenon before?
> > > >
> > > > See if it does the same thing in 1st/2nd at low speed, light load -
> > > > about the same conditions you would get in a parking lot cruising
> > > > around looking for a parking spot. That was the final step on my 88
> > > > when I was trying to get it to run right and a new O2 sensor cured
> > > > that. If it's just under load, like high or overdrive when it's
> > > > pulling hard, Bill had the best idea: CPS and a real tuneup.
> > > >
> > > > --
> > > > Will Honea <whonea@codenet.net>
> >
> > Thanks, Kevin. Thanks, Will. It just does it on the road, often when
> > you start up a slight incline requiring just a very light additional
> > load. I guess I'll have to bite the financial bullet and take down a
> > pocket-load of sensors and relays. The local mechanics have no
> > diagnostic equipment and the nearest dealer is two hours away in La
> > Paz and may also be not too well equipped or trained. This may be my
> > primary winter project. At least then I can answer the eternal
> > question of "What do you do all winter in Baja"?
Good ideas. I actually changed a CPS a couple of years ago when the
problem was just a poor connection but have repressed just how
difficult it was. I suppose it'll all come back to me. For sure I'll
do the check-the-connectors drill first, with all fingers and toes
crossed. I'd much rather be fishing than skinning knuckles.
> I would start by cleaning the connectors around the throttle body -
> Throttle Position Sensor (TPS), Idle Air Control (IAC) - then get the
> MAP Sensor (up on the firewall) and the CPS connector (next to the
> fiewall pretty much under the MAP Sensor and behind the fuel rail).
> Wash them out with WD40, scrub with a stiff brush, blow dry and
> re-connect. Use a bit of silicone grease on the connector seals when
> you put them back. That might cure the problem and save you some
> swearing and skinned knuckles. BTW, for the CPS, I drop the front end
> of the front drive shaft so that I have more room to work. That CPS
> is a PITA to reach and I still have to use a couple of long extensions
> but moveing the shaft out of the way helps a lot.
>
> On Wed, 15 Oct 2003 00:45:05 UTC elmangle@hotmail.com (Rod Frazier)
> wrote:
>
> > "Kevin in San Diego" <kevin_hedstrom@yahoo.com> wrote in message news:<BtLib.70216$gv5.66526@fed1read05>...
> > > It couldnt hurt to carry a fuel pump relay.
> > > KH
> > >
> > > "Will Honea" <whonea@codenet.net> wrote in message
> > > news:JxX2tWiP5BNp-pn2-Cb0Pf6ZyF9NZ@ANON.NONE.NET...
> > > > On Mon, 13 Oct 2003 17:28:14 UTC elmangle@hotmail.com (Rod Frazier)
> > > > wrote:
> > > >
> > > > > Help. We have an '89 XJ with the 4.0 that we keep at our winter home
> > > > > in Mexico and it has recently started hesitating at light load in
> > > > > overdrive. Feels like the ignition is completely turned off for just
> > > > > an instant. It may happen once or twice in 20 miles or it may do it
> > > > > every minute or so. If we shift out of overdrive and increase the
> > > > > revs a bit, it either doesn't do it or we can't feel it because of the
> > > > > increased engine speed. I've replaced the plugs, wires, cap and
> > > > > rotor, and run through two cans of injection cleaner and checked all
> > > > > the vital connectors, including the one to the CPS, which has given me
> > > > > trouble in the past. I'm leaving for Mexico this week and would like
> > > > > to take down with me any replacement parts that might solve the
> > > > > problem. Anyone run across this phenomenon before?
> > > >
> > > > See if it does the same thing in 1st/2nd at low speed, light load -
> > > > about the same conditions you would get in a parking lot cruising
> > > > around looking for a parking spot. That was the final step on my 88
> > > > when I was trying to get it to run right and a new O2 sensor cured
> > > > that. If it's just under load, like high or overdrive when it's
> > > > pulling hard, Bill had the best idea: CPS and a real tuneup.
> > > >
> > > > --
> > > > Will Honea <whonea@codenet.net>
> >
> > Thanks, Kevin. Thanks, Will. It just does it on the road, often when
> > you start up a slight incline requiring just a very light additional
> > load. I guess I'll have to bite the financial bullet and take down a
> > pocket-load of sensors and relays. The local mechanics have no
> > diagnostic equipment and the nearest dealer is two hours away in La
> > Paz and may also be not too well equipped or trained. This may be my
> > primary winter project. At least then I can answer the eternal
> > question of "What do you do all winter in Baja"?
Good ideas. I actually changed a CPS a couple of years ago when the
problem was just a poor connection but have repressed just how
difficult it was. I suppose it'll all come back to me. For sure I'll
do the check-the-connectors drill first, with all fingers and toes
crossed. I'd much rather be fishing than skinning knuckles.
10-15-2003, 10:02 AM
#22
Guest
Posts: n/a
Re: Hesitating XJ
"Will Honea" <whonea@codenet.net> wrote in message news:<JxX2tWiP5BNp-pn2-Ed4QvuHbXFqO@anon.none.net>...
> I would start by cleaning the connectors around the throttle body -
> Throttle Position Sensor (TPS), Idle Air Control (IAC) - then get the
> MAP Sensor (up on the firewall) and the CPS connector (next to the
> fiewall pretty much under the MAP Sensor and behind the fuel rail).
> Wash them out with WD40, scrub with a stiff brush, blow dry and
> re-connect. Use a bit of silicone grease on the connector seals when
> you put them back. That might cure the problem and save you some
> swearing and skinned knuckles. BTW, for the CPS, I drop the front end
> of the front drive shaft so that I have more room to work. That CPS
> is a PITA to reach and I still have to use a couple of long extensions
> but moveing the shaft out of the way helps a lot.
>
> On Wed, 15 Oct 2003 00:45:05 UTC elmangle@hotmail.com (Rod Frazier)
> wrote:
>
> > "Kevin in San Diego" <kevin_hedstrom@yahoo.com> wrote in message news:<BtLib.70216$gv5.66526@fed1read05>...
> > > It couldnt hurt to carry a fuel pump relay.
> > > KH
> > >
> > > "Will Honea" <whonea@codenet.net> wrote in message
> > > news:JxX2tWiP5BNp-pn2-Cb0Pf6ZyF9NZ@ANON.NONE.NET...
> > > > On Mon, 13 Oct 2003 17:28:14 UTC elmangle@hotmail.com (Rod Frazier)
> > > > wrote:
> > > >
> > > > > Help. We have an '89 XJ with the 4.0 that we keep at our winter home
> > > > > in Mexico and it has recently started hesitating at light load in
> > > > > overdrive. Feels like the ignition is completely turned off for just
> > > > > an instant. It may happen once or twice in 20 miles or it may do it
> > > > > every minute or so. If we shift out of overdrive and increase the
> > > > > revs a bit, it either doesn't do it or we can't feel it because of the
> > > > > increased engine speed. I've replaced the plugs, wires, cap and
> > > > > rotor, and run through two cans of injection cleaner and checked all
> > > > > the vital connectors, including the one to the CPS, which has given me
> > > > > trouble in the past. I'm leaving for Mexico this week and would like
> > > > > to take down with me any replacement parts that might solve the
> > > > > problem. Anyone run across this phenomenon before?
> > > >
> > > > See if it does the same thing in 1st/2nd at low speed, light load -
> > > > about the same conditions you would get in a parking lot cruising
> > > > around looking for a parking spot. That was the final step on my 88
> > > > when I was trying to get it to run right and a new O2 sensor cured
> > > > that. If it's just under load, like high or overdrive when it's
> > > > pulling hard, Bill had the best idea: CPS and a real tuneup.
> > > >
> > > > --
> > > > Will Honea <whonea@codenet.net>
> >
> > Thanks, Kevin. Thanks, Will. It just does it on the road, often when
> > you start up a slight incline requiring just a very light additional
> > load. I guess I'll have to bite the financial bullet and take down a
> > pocket-load of sensors and relays. The local mechanics have no
> > diagnostic equipment and the nearest dealer is two hours away in La
> > Paz and may also be not too well equipped or trained. This may be my
> > primary winter project. At least then I can answer the eternal
> > question of "What do you do all winter in Baja"?
Good ideas. I actually changed a CPS a couple of years ago when the
problem was just a poor connection but have repressed just how
difficult it was. I suppose it'll all come back to me. For sure I'll
do the check-the-connectors drill first, with all fingers and toes
crossed. I'd much rather be fishing than skinning knuckles.
> I would start by cleaning the connectors around the throttle body -
> Throttle Position Sensor (TPS), Idle Air Control (IAC) - then get the
> MAP Sensor (up on the firewall) and the CPS connector (next to the
> fiewall pretty much under the MAP Sensor and behind the fuel rail).
> Wash them out with WD40, scrub with a stiff brush, blow dry and
> re-connect. Use a bit of silicone grease on the connector seals when
> you put them back. That might cure the problem and save you some
> swearing and skinned knuckles. BTW, for the CPS, I drop the front end
> of the front drive shaft so that I have more room to work. That CPS
> is a PITA to reach and I still have to use a couple of long extensions
> but moveing the shaft out of the way helps a lot.
>
> On Wed, 15 Oct 2003 00:45:05 UTC elmangle@hotmail.com (Rod Frazier)
> wrote:
>
> > "Kevin in San Diego" <kevin_hedstrom@yahoo.com> wrote in message news:<BtLib.70216$gv5.66526@fed1read05>...
> > > It couldnt hurt to carry a fuel pump relay.
> > > KH
> > >
> > > "Will Honea" <whonea@codenet.net> wrote in message
> > > news:JxX2tWiP5BNp-pn2-Cb0Pf6ZyF9NZ@ANON.NONE.NET...
> > > > On Mon, 13 Oct 2003 17:28:14 UTC elmangle@hotmail.com (Rod Frazier)
> > > > wrote:
> > > >
> > > > > Help. We have an '89 XJ with the 4.0 that we keep at our winter home
> > > > > in Mexico and it has recently started hesitating at light load in
> > > > > overdrive. Feels like the ignition is completely turned off for just
> > > > > an instant. It may happen once or twice in 20 miles or it may do it
> > > > > every minute or so. If we shift out of overdrive and increase the
> > > > > revs a bit, it either doesn't do it or we can't feel it because of the
> > > > > increased engine speed. I've replaced the plugs, wires, cap and
> > > > > rotor, and run through two cans of injection cleaner and checked all
> > > > > the vital connectors, including the one to the CPS, which has given me
> > > > > trouble in the past. I'm leaving for Mexico this week and would like
> > > > > to take down with me any replacement parts that might solve the
> > > > > problem. Anyone run across this phenomenon before?
> > > >
> > > > See if it does the same thing in 1st/2nd at low speed, light load -
> > > > about the same conditions you would get in a parking lot cruising
> > > > around looking for a parking spot. That was the final step on my 88
> > > > when I was trying to get it to run right and a new O2 sensor cured
> > > > that. If it's just under load, like high or overdrive when it's
> > > > pulling hard, Bill had the best idea: CPS and a real tuneup.
> > > >
> > > > --
> > > > Will Honea <whonea@codenet.net>
> >
> > Thanks, Kevin. Thanks, Will. It just does it on the road, often when
> > you start up a slight incline requiring just a very light additional
> > load. I guess I'll have to bite the financial bullet and take down a
> > pocket-load of sensors and relays. The local mechanics have no
> > diagnostic equipment and the nearest dealer is two hours away in La
> > Paz and may also be not too well equipped or trained. This may be my
> > primary winter project. At least then I can answer the eternal
> > question of "What do you do all winter in Baja"?
Good ideas. I actually changed a CPS a couple of years ago when the
problem was just a poor connection but have repressed just how
difficult it was. I suppose it'll all come back to me. For sure I'll
do the check-the-connectors drill first, with all fingers and toes
crossed. I'd much rather be fishing than skinning knuckles.
10-16-2003, 02:20 AM
#23
Guest
Posts: n/a
Re: Hesitating XJ
Just remember if you are stuck and suspect the cps, just unplug it and plug
it back in. That often yeilds a start and will work for a while
KH
"Rod Frazier" <elmangle@hotmail.com> wrote in message
news:63eaf844.0310150602.b689bcc@posting.google.co m...
> "Will Honea" <whonea@codenet.net> wrote in message
news:<JxX2tWiP5BNp-pn2-Ed4QvuHbXFqO@anon.none.net>...
> > I would start by cleaning the connectors around the throttle body -
> > Throttle Position Sensor (TPS), Idle Air Control (IAC) - then get the
> > MAP Sensor (up on the firewall) and the CPS connector (next to the
> > fiewall pretty much under the MAP Sensor and behind the fuel rail).
> > Wash them out with WD40, scrub with a stiff brush, blow dry and
> > re-connect. Use a bit of silicone grease on the connector seals when
> > you put them back. That might cure the problem and save you some
> > swearing and skinned knuckles. BTW, for the CPS, I drop the front end
> > of the front drive shaft so that I have more room to work. That CPS
> > is a PITA to reach and I still have to use a couple of long extensions
> > but moveing the shaft out of the way helps a lot.
> >
> > On Wed, 15 Oct 2003 00:45:05 UTC elmangle@hotmail.com (Rod Frazier)
> > wrote:
> >
> > > "Kevin in San Diego" <kevin_hedstrom@yahoo.com> wrote in message
news:<BtLib.70216$gv5.66526@fed1read05>...
> > > > It couldnt hurt to carry a fuel pump relay.
> > > > KH
> > > >
> > > > "Will Honea" <whonea@codenet.net> wrote in message
> > > > news:JxX2tWiP5BNp-pn2-Cb0Pf6ZyF9NZ@ANON.NONE.NET...
> > > > > On Mon, 13 Oct 2003 17:28:14 UTC elmangle@hotmail.com (Rod
Frazier)
> > > > > wrote:
> > > > >
> > > > > > Help. We have an '89 XJ with the 4.0 that we keep at our winter
home
> > > > > > in Mexico and it has recently started hesitating at light load
in
> > > > > > overdrive. Feels like the ignition is completely turned off for
just
> > > > > > an instant. It may happen once or twice in 20 miles or it may
do it
> > > > > > every minute or so. If we shift out of overdrive and increase
the
> > > > > > revs a bit, it either doesn't do it or we can't feel it because
of the
> > > > > > increased engine speed. I've replaced the plugs, wires, cap and
> > > > > > rotor, and run through two cans of injection cleaner and checked
all
> > > > > > the vital connectors, including the one to the CPS, which has
given me
> > > > > > trouble in the past. I'm leaving for Mexico this week and would
like
> > > > > > to take down with me any replacement parts that might solve the
> > > > > > problem. Anyone run across this phenomenon before?
> > > > >
> > > > > See if it does the same thing in 1st/2nd at low speed, light
load -
> > > > > about the same conditions you would get in a parking lot cruising
> > > > > around looking for a parking spot. That was the final step on my
88
> > > > > when I was trying to get it to run right and a new O2 sensor cured
> > > > > that. If it's just under load, like high or overdrive when it's
> > > > > pulling hard, Bill had the best idea: CPS and a real tuneup.
> > > > >
> > > > > --
> > > > > Will Honea <whonea@codenet.net>
> > >
> > > Thanks, Kevin. Thanks, Will. It just does it on the road, often when
> > > you start up a slight incline requiring just a very light additional
> > > load. I guess I'll have to bite the financial bullet and take down a
> > > pocket-load of sensors and relays. The local mechanics have no
> > > diagnostic equipment and the nearest dealer is two hours away in La
> > > Paz and may also be not too well equipped or trained. This may be my
> > > primary winter project. At least then I can answer the eternal
> > > question of "What do you do all winter in Baja"?
>
> Good ideas. I actually changed a CPS a couple of years ago when the
> problem was just a poor connection but have repressed just how
> difficult it was. I suppose it'll all come back to me. For sure I'll
> do the check-the-connectors drill first, with all fingers and toes
> crossed. I'd much rather be fishing than skinning knuckles.
it back in. That often yeilds a start and will work for a while
KH
"Rod Frazier" <elmangle@hotmail.com> wrote in message
news:63eaf844.0310150602.b689bcc@posting.google.co m...
> "Will Honea" <whonea@codenet.net> wrote in message
news:<JxX2tWiP5BNp-pn2-Ed4QvuHbXFqO@anon.none.net>...
> > I would start by cleaning the connectors around the throttle body -
> > Throttle Position Sensor (TPS), Idle Air Control (IAC) - then get the
> > MAP Sensor (up on the firewall) and the CPS connector (next to the
> > fiewall pretty much under the MAP Sensor and behind the fuel rail).
> > Wash them out with WD40, scrub with a stiff brush, blow dry and
> > re-connect. Use a bit of silicone grease on the connector seals when
> > you put them back. That might cure the problem and save you some
> > swearing and skinned knuckles. BTW, for the CPS, I drop the front end
> > of the front drive shaft so that I have more room to work. That CPS
> > is a PITA to reach and I still have to use a couple of long extensions
> > but moveing the shaft out of the way helps a lot.
> >
> > On Wed, 15 Oct 2003 00:45:05 UTC elmangle@hotmail.com (Rod Frazier)
> > wrote:
> >
> > > "Kevin in San Diego" <kevin_hedstrom@yahoo.com> wrote in message
news:<BtLib.70216$gv5.66526@fed1read05>...
> > > > It couldnt hurt to carry a fuel pump relay.
> > > > KH
> > > >
> > > > "Will Honea" <whonea@codenet.net> wrote in message
> > > > news:JxX2tWiP5BNp-pn2-Cb0Pf6ZyF9NZ@ANON.NONE.NET...
> > > > > On Mon, 13 Oct 2003 17:28:14 UTC elmangle@hotmail.com (Rod
Frazier)
> > > > > wrote:
> > > > >
> > > > > > Help. We have an '89 XJ with the 4.0 that we keep at our winter
home
> > > > > > in Mexico and it has recently started hesitating at light load
in
> > > > > > overdrive. Feels like the ignition is completely turned off for
just
> > > > > > an instant. It may happen once or twice in 20 miles or it may
do it
> > > > > > every minute or so. If we shift out of overdrive and increase
the
> > > > > > revs a bit, it either doesn't do it or we can't feel it because
of the
> > > > > > increased engine speed. I've replaced the plugs, wires, cap and
> > > > > > rotor, and run through two cans of injection cleaner and checked
all
> > > > > > the vital connectors, including the one to the CPS, which has
given me
> > > > > > trouble in the past. I'm leaving for Mexico this week and would
like
> > > > > > to take down with me any replacement parts that might solve the
> > > > > > problem. Anyone run across this phenomenon before?
> > > > >
> > > > > See if it does the same thing in 1st/2nd at low speed, light
load -
> > > > > about the same conditions you would get in a parking lot cruising
> > > > > around looking for a parking spot. That was the final step on my
88
> > > > > when I was trying to get it to run right and a new O2 sensor cured
> > > > > that. If it's just under load, like high or overdrive when it's
> > > > > pulling hard, Bill had the best idea: CPS and a real tuneup.
> > > > >
> > > > > --
> > > > > Will Honea <whonea@codenet.net>
> > >
> > > Thanks, Kevin. Thanks, Will. It just does it on the road, often when
> > > you start up a slight incline requiring just a very light additional
> > > load. I guess I'll have to bite the financial bullet and take down a
> > > pocket-load of sensors and relays. The local mechanics have no
> > > diagnostic equipment and the nearest dealer is two hours away in La
> > > Paz and may also be not too well equipped or trained. This may be my
> > > primary winter project. At least then I can answer the eternal
> > > question of "What do you do all winter in Baja"?
>
> Good ideas. I actually changed a CPS a couple of years ago when the
> problem was just a poor connection but have repressed just how
> difficult it was. I suppose it'll all come back to me. For sure I'll
> do the check-the-connectors drill first, with all fingers and toes
> crossed. I'd much rather be fishing than skinning knuckles.
10-16-2003, 02:20 AM
#24
Guest
Posts: n/a
Re: Hesitating XJ
Just remember if you are stuck and suspect the cps, just unplug it and plug
it back in. That often yeilds a start and will work for a while
KH
"Rod Frazier" <elmangle@hotmail.com> wrote in message
news:63eaf844.0310150602.b689bcc@posting.google.co m...
> "Will Honea" <whonea@codenet.net> wrote in message
news:<JxX2tWiP5BNp-pn2-Ed4QvuHbXFqO@anon.none.net>...
> > I would start by cleaning the connectors around the throttle body -
> > Throttle Position Sensor (TPS), Idle Air Control (IAC) - then get the
> > MAP Sensor (up on the firewall) and the CPS connector (next to the
> > fiewall pretty much under the MAP Sensor and behind the fuel rail).
> > Wash them out with WD40, scrub with a stiff brush, blow dry and
> > re-connect. Use a bit of silicone grease on the connector seals when
> > you put them back. That might cure the problem and save you some
> > swearing and skinned knuckles. BTW, for the CPS, I drop the front end
> > of the front drive shaft so that I have more room to work. That CPS
> > is a PITA to reach and I still have to use a couple of long extensions
> > but moveing the shaft out of the way helps a lot.
> >
> > On Wed, 15 Oct 2003 00:45:05 UTC elmangle@hotmail.com (Rod Frazier)
> > wrote:
> >
> > > "Kevin in San Diego" <kevin_hedstrom@yahoo.com> wrote in message
news:<BtLib.70216$gv5.66526@fed1read05>...
> > > > It couldnt hurt to carry a fuel pump relay.
> > > > KH
> > > >
> > > > "Will Honea" <whonea@codenet.net> wrote in message
> > > > news:JxX2tWiP5BNp-pn2-Cb0Pf6ZyF9NZ@ANON.NONE.NET...
> > > > > On Mon, 13 Oct 2003 17:28:14 UTC elmangle@hotmail.com (Rod
Frazier)
> > > > > wrote:
> > > > >
> > > > > > Help. We have an '89 XJ with the 4.0 that we keep at our winter
home
> > > > > > in Mexico and it has recently started hesitating at light load
in
> > > > > > overdrive. Feels like the ignition is completely turned off for
just
> > > > > > an instant. It may happen once or twice in 20 miles or it may
do it
> > > > > > every minute or so. If we shift out of overdrive and increase
the
> > > > > > revs a bit, it either doesn't do it or we can't feel it because
of the
> > > > > > increased engine speed. I've replaced the plugs, wires, cap and
> > > > > > rotor, and run through two cans of injection cleaner and checked
all
> > > > > > the vital connectors, including the one to the CPS, which has
given me
> > > > > > trouble in the past. I'm leaving for Mexico this week and would
like
> > > > > > to take down with me any replacement parts that might solve the
> > > > > > problem. Anyone run across this phenomenon before?
> > > > >
> > > > > See if it does the same thing in 1st/2nd at low speed, light
load -
> > > > > about the same conditions you would get in a parking lot cruising
> > > > > around looking for a parking spot. That was the final step on my
88
> > > > > when I was trying to get it to run right and a new O2 sensor cured
> > > > > that. If it's just under load, like high or overdrive when it's
> > > > > pulling hard, Bill had the best idea: CPS and a real tuneup.
> > > > >
> > > > > --
> > > > > Will Honea <whonea@codenet.net>
> > >
> > > Thanks, Kevin. Thanks, Will. It just does it on the road, often when
> > > you start up a slight incline requiring just a very light additional
> > > load. I guess I'll have to bite the financial bullet and take down a
> > > pocket-load of sensors and relays. The local mechanics have no
> > > diagnostic equipment and the nearest dealer is two hours away in La
> > > Paz and may also be not too well equipped or trained. This may be my
> > > primary winter project. At least then I can answer the eternal
> > > question of "What do you do all winter in Baja"?
>
> Good ideas. I actually changed a CPS a couple of years ago when the
> problem was just a poor connection but have repressed just how
> difficult it was. I suppose it'll all come back to me. For sure I'll
> do the check-the-connectors drill first, with all fingers and toes
> crossed. I'd much rather be fishing than skinning knuckles.
it back in. That often yeilds a start and will work for a while
KH
"Rod Frazier" <elmangle@hotmail.com> wrote in message
news:63eaf844.0310150602.b689bcc@posting.google.co m...
> "Will Honea" <whonea@codenet.net> wrote in message
news:<JxX2tWiP5BNp-pn2-Ed4QvuHbXFqO@anon.none.net>...
> > I would start by cleaning the connectors around the throttle body -
> > Throttle Position Sensor (TPS), Idle Air Control (IAC) - then get the
> > MAP Sensor (up on the firewall) and the CPS connector (next to the
> > fiewall pretty much under the MAP Sensor and behind the fuel rail).
> > Wash them out with WD40, scrub with a stiff brush, blow dry and
> > re-connect. Use a bit of silicone grease on the connector seals when
> > you put them back. That might cure the problem and save you some
> > swearing and skinned knuckles. BTW, for the CPS, I drop the front end
> > of the front drive shaft so that I have more room to work. That CPS
> > is a PITA to reach and I still have to use a couple of long extensions
> > but moveing the shaft out of the way helps a lot.
> >
> > On Wed, 15 Oct 2003 00:45:05 UTC elmangle@hotmail.com (Rod Frazier)
> > wrote:
> >
> > > "Kevin in San Diego" <kevin_hedstrom@yahoo.com> wrote in message
news:<BtLib.70216$gv5.66526@fed1read05>...
> > > > It couldnt hurt to carry a fuel pump relay.
> > > > KH
> > > >
> > > > "Will Honea" <whonea@codenet.net> wrote in message
> > > > news:JxX2tWiP5BNp-pn2-Cb0Pf6ZyF9NZ@ANON.NONE.NET...
> > > > > On Mon, 13 Oct 2003 17:28:14 UTC elmangle@hotmail.com (Rod
Frazier)
> > > > > wrote:
> > > > >
> > > > > > Help. We have an '89 XJ with the 4.0 that we keep at our winter
home
> > > > > > in Mexico and it has recently started hesitating at light load
in
> > > > > > overdrive. Feels like the ignition is completely turned off for
just
> > > > > > an instant. It may happen once or twice in 20 miles or it may
do it
> > > > > > every minute or so. If we shift out of overdrive and increase
the
> > > > > > revs a bit, it either doesn't do it or we can't feel it because
of the
> > > > > > increased engine speed. I've replaced the plugs, wires, cap and
> > > > > > rotor, and run through two cans of injection cleaner and checked
all
> > > > > > the vital connectors, including the one to the CPS, which has
given me
> > > > > > trouble in the past. I'm leaving for Mexico this week and would
like
> > > > > > to take down with me any replacement parts that might solve the
> > > > > > problem. Anyone run across this phenomenon before?
> > > > >
> > > > > See if it does the same thing in 1st/2nd at low speed, light
load -
> > > > > about the same conditions you would get in a parking lot cruising
> > > > > around looking for a parking spot. That was the final step on my
88
> > > > > when I was trying to get it to run right and a new O2 sensor cured
> > > > > that. If it's just under load, like high or overdrive when it's
> > > > > pulling hard, Bill had the best idea: CPS and a real tuneup.
> > > > >
> > > > > --
> > > > > Will Honea <whonea@codenet.net>
> > >
> > > Thanks, Kevin. Thanks, Will. It just does it on the road, often when
> > > you start up a slight incline requiring just a very light additional
> > > load. I guess I'll have to bite the financial bullet and take down a
> > > pocket-load of sensors and relays. The local mechanics have no
> > > diagnostic equipment and the nearest dealer is two hours away in La
> > > Paz and may also be not too well equipped or trained. This may be my
> > > primary winter project. At least then I can answer the eternal
> > > question of "What do you do all winter in Baja"?
>
> Good ideas. I actually changed a CPS a couple of years ago when the
> problem was just a poor connection but have repressed just how
> difficult it was. I suppose it'll all come back to me. For sure I'll
> do the check-the-connectors drill first, with all fingers and toes
> crossed. I'd much rather be fishing than skinning knuckles.
10-16-2003, 02:20 AM
#25
Guest
Posts: n/a
Re: Hesitating XJ
Just remember if you are stuck and suspect the cps, just unplug it and plug
it back in. That often yeilds a start and will work for a while
KH
"Rod Frazier" <elmangle@hotmail.com> wrote in message
news:63eaf844.0310150602.b689bcc@posting.google.co m...
> "Will Honea" <whonea@codenet.net> wrote in message
news:<JxX2tWiP5BNp-pn2-Ed4QvuHbXFqO@anon.none.net>...
> > I would start by cleaning the connectors around the throttle body -
> > Throttle Position Sensor (TPS), Idle Air Control (IAC) - then get the
> > MAP Sensor (up on the firewall) and the CPS connector (next to the
> > fiewall pretty much under the MAP Sensor and behind the fuel rail).
> > Wash them out with WD40, scrub with a stiff brush, blow dry and
> > re-connect. Use a bit of silicone grease on the connector seals when
> > you put them back. That might cure the problem and save you some
> > swearing and skinned knuckles. BTW, for the CPS, I drop the front end
> > of the front drive shaft so that I have more room to work. That CPS
> > is a PITA to reach and I still have to use a couple of long extensions
> > but moveing the shaft out of the way helps a lot.
> >
> > On Wed, 15 Oct 2003 00:45:05 UTC elmangle@hotmail.com (Rod Frazier)
> > wrote:
> >
> > > "Kevin in San Diego" <kevin_hedstrom@yahoo.com> wrote in message
news:<BtLib.70216$gv5.66526@fed1read05>...
> > > > It couldnt hurt to carry a fuel pump relay.
> > > > KH
> > > >
> > > > "Will Honea" <whonea@codenet.net> wrote in message
> > > > news:JxX2tWiP5BNp-pn2-Cb0Pf6ZyF9NZ@ANON.NONE.NET...
> > > > > On Mon, 13 Oct 2003 17:28:14 UTC elmangle@hotmail.com (Rod
Frazier)
> > > > > wrote:
> > > > >
> > > > > > Help. We have an '89 XJ with the 4.0 that we keep at our winter
home
> > > > > > in Mexico and it has recently started hesitating at light load
in
> > > > > > overdrive. Feels like the ignition is completely turned off for
just
> > > > > > an instant. It may happen once or twice in 20 miles or it may
do it
> > > > > > every minute or so. If we shift out of overdrive and increase
the
> > > > > > revs a bit, it either doesn't do it or we can't feel it because
of the
> > > > > > increased engine speed. I've replaced the plugs, wires, cap and
> > > > > > rotor, and run through two cans of injection cleaner and checked
all
> > > > > > the vital connectors, including the one to the CPS, which has
given me
> > > > > > trouble in the past. I'm leaving for Mexico this week and would
like
> > > > > > to take down with me any replacement parts that might solve the
> > > > > > problem. Anyone run across this phenomenon before?
> > > > >
> > > > > See if it does the same thing in 1st/2nd at low speed, light
load -
> > > > > about the same conditions you would get in a parking lot cruising
> > > > > around looking for a parking spot. That was the final step on my
88
> > > > > when I was trying to get it to run right and a new O2 sensor cured
> > > > > that. If it's just under load, like high or overdrive when it's
> > > > > pulling hard, Bill had the best idea: CPS and a real tuneup.
> > > > >
> > > > > --
> > > > > Will Honea <whonea@codenet.net>
> > >
> > > Thanks, Kevin. Thanks, Will. It just does it on the road, often when
> > > you start up a slight incline requiring just a very light additional
> > > load. I guess I'll have to bite the financial bullet and take down a
> > > pocket-load of sensors and relays. The local mechanics have no
> > > diagnostic equipment and the nearest dealer is two hours away in La
> > > Paz and may also be not too well equipped or trained. This may be my
> > > primary winter project. At least then I can answer the eternal
> > > question of "What do you do all winter in Baja"?
>
> Good ideas. I actually changed a CPS a couple of years ago when the
> problem was just a poor connection but have repressed just how
> difficult it was. I suppose it'll all come back to me. For sure I'll
> do the check-the-connectors drill first, with all fingers and toes
> crossed. I'd much rather be fishing than skinning knuckles.
it back in. That often yeilds a start and will work for a while
KH
"Rod Frazier" <elmangle@hotmail.com> wrote in message
news:63eaf844.0310150602.b689bcc@posting.google.co m...
> "Will Honea" <whonea@codenet.net> wrote in message
news:<JxX2tWiP5BNp-pn2-Ed4QvuHbXFqO@anon.none.net>...
> > I would start by cleaning the connectors around the throttle body -
> > Throttle Position Sensor (TPS), Idle Air Control (IAC) - then get the
> > MAP Sensor (up on the firewall) and the CPS connector (next to the
> > fiewall pretty much under the MAP Sensor and behind the fuel rail).
> > Wash them out with WD40, scrub with a stiff brush, blow dry and
> > re-connect. Use a bit of silicone grease on the connector seals when
> > you put them back. That might cure the problem and save you some
> > swearing and skinned knuckles. BTW, for the CPS, I drop the front end
> > of the front drive shaft so that I have more room to work. That CPS
> > is a PITA to reach and I still have to use a couple of long extensions
> > but moveing the shaft out of the way helps a lot.
> >
> > On Wed, 15 Oct 2003 00:45:05 UTC elmangle@hotmail.com (Rod Frazier)
> > wrote:
> >
> > > "Kevin in San Diego" <kevin_hedstrom@yahoo.com> wrote in message
news:<BtLib.70216$gv5.66526@fed1read05>...
> > > > It couldnt hurt to carry a fuel pump relay.
> > > > KH
> > > >
> > > > "Will Honea" <whonea@codenet.net> wrote in message
> > > > news:JxX2tWiP5BNp-pn2-Cb0Pf6ZyF9NZ@ANON.NONE.NET...
> > > > > On Mon, 13 Oct 2003 17:28:14 UTC elmangle@hotmail.com (Rod
Frazier)
> > > > > wrote:
> > > > >
> > > > > > Help. We have an '89 XJ with the 4.0 that we keep at our winter
home
> > > > > > in Mexico and it has recently started hesitating at light load
in
> > > > > > overdrive. Feels like the ignition is completely turned off for
just
> > > > > > an instant. It may happen once or twice in 20 miles or it may
do it
> > > > > > every minute or so. If we shift out of overdrive and increase
the
> > > > > > revs a bit, it either doesn't do it or we can't feel it because
of the
> > > > > > increased engine speed. I've replaced the plugs, wires, cap and
> > > > > > rotor, and run through two cans of injection cleaner and checked
all
> > > > > > the vital connectors, including the one to the CPS, which has
given me
> > > > > > trouble in the past. I'm leaving for Mexico this week and would
like
> > > > > > to take down with me any replacement parts that might solve the
> > > > > > problem. Anyone run across this phenomenon before?
> > > > >
> > > > > See if it does the same thing in 1st/2nd at low speed, light
load -
> > > > > about the same conditions you would get in a parking lot cruising
> > > > > around looking for a parking spot. That was the final step on my
88
> > > > > when I was trying to get it to run right and a new O2 sensor cured
> > > > > that. If it's just under load, like high or overdrive when it's
> > > > > pulling hard, Bill had the best idea: CPS and a real tuneup.
> > > > >
> > > > > --
> > > > > Will Honea <whonea@codenet.net>
> > >
> > > Thanks, Kevin. Thanks, Will. It just does it on the road, often when
> > > you start up a slight incline requiring just a very light additional
> > > load. I guess I'll have to bite the financial bullet and take down a
> > > pocket-load of sensors and relays. The local mechanics have no
> > > diagnostic equipment and the nearest dealer is two hours away in La
> > > Paz and may also be not too well equipped or trained. This may be my
> > > primary winter project. At least then I can answer the eternal
> > > question of "What do you do all winter in Baja"?
>
> Good ideas. I actually changed a CPS a couple of years ago when the
> problem was just a poor connection but have repressed just how
> difficult it was. I suppose it'll all come back to me. For sure I'll
> do the check-the-connectors drill first, with all fingers and toes
> crossed. I'd much rather be fishing than skinning knuckles.
10-16-2003, 11:54 AM
#26
Guest
Posts: n/a
Re: Hesitating XJ
"Kevin in San Diego" <kevin_hedstrom@yahoo.com> wrote in message news:<OMqjb.82489$gv5.52609@fed1read05>...
> Just remember if you are stuck and suspect the cps, just unplug it and plug
> it back in. That often yeilds a start and will work for a while
>
KH
> Yeah, that's worked for me before. In fact, I cured a friend's
Cherokee that had been to two different mechanics by doing the same
thing. Unfortunately, it hasn't worked for me this time. The
symptoms are different from anything I've had before. I suspect one
problem is that the car now lives all year about a hundred yards from
the ocean, and corrosion is incipient. I think I'll make Kragens
happy today and pick up every sensor I think might be faulty. It
galls me, but I don't see another recourse. I'll honk as we pass
through San Diego (coming from the Central Valley).
> "Rod Frazier" <elmangle@hotmail.com> wrote in message
> news:63eaf844.0310150602.b689bcc@posting.google.co m...
> > "Will Honea" <whonea@codenet.net> wrote in message
> news:<JxX2tWiP5BNp-pn2-Ed4QvuHbXFqO@anon.none.net>...
> > > I would start by cleaning the connectors around the throttle body -
> > > Throttle Position Sensor (TPS), Idle Air Control (IAC) - then get the
> > > MAP Sensor (up on the firewall) and the CPS connector (next to the
> > > fiewall pretty much under the MAP Sensor and behind the fuel rail).
> > > Wash them out with WD40, scrub with a stiff brush, blow dry and
> > > re-connect. Use a bit of silicone grease on the connector seals when
> > > you put them back. That might cure the problem and save you some
> > > swearing and skinned knuckles. BTW, for the CPS, I drop the front end
> > > of the front drive shaft so that I have more room to work. That CPS
> > > is a PITA to reach and I still have to use a couple of long extensions
> > > but moveing the shaft out of the way helps a lot.
> > >
> > > On Wed, 15 Oct 2003 00:45:05 UTC elmangle@hotmail.com (Rod Frazier)
> > > wrote:
> > >
> > > > "Kevin in San Diego" <kevin_hedstrom@yahoo.com> wrote in message
> news:<BtLib.70216$gv5.66526@fed1read05>...
> > > > > It couldnt hurt to carry a fuel pump relay.
> > > > > KH
> > > > >
> > > > > "Will Honea" <whonea@codenet.net> wrote in message
> > > > > news:JxX2tWiP5BNp-pn2-Cb0Pf6ZyF9NZ@ANON.NONE.NET...
> > > > > > On Mon, 13 Oct 2003 17:28:14 UTC elmangle@hotmail.com (Rod
> Frazier)
> > > > > > wrote:
> > > > > >
> > > > > > > Help. We have an '89 XJ with the 4.0 that we keep at our winter
> home
> > > > > > > in Mexico and it has recently started hesitating at light load
> in
> > > > > > > overdrive. Feels like the ignition is completely turned off for
> just
> > > > > > > an instant. It may happen once or twice in 20 miles or it may
> do it
> > > > > > > every minute or so. If we shift out of overdrive and increase
> the
> > > > > > > revs a bit, it either doesn't do it or we can't feel it because
> of the
> > > > > > > increased engine speed. I've replaced the plugs, wires, cap and
> > > > > > > rotor, and run through two cans of injection cleaner and checked
> all
> > > > > > > the vital connectors, including the one to the CPS, which has
> given me
> > > > > > > trouble in the past. I'm leaving for Mexico this week and would
> like
> > > > > > > to take down with me any replacement parts that might solve the
> > > > > > > problem. Anyone run across this phenomenon before?
> > > > > >
> > > > > > See if it does the same thing in 1st/2nd at low speed, light
> load -
> > > > > > about the same conditions you would get in a parking lot cruising
> > > > > > around looking for a parking spot. That was the final step on my
> 88
> > > > > > when I was trying to get it to run right and a new O2 sensor cured
> > > > > > that. If it's just under load, like high or overdrive when it's
> > > > > > pulling hard, Bill had the best idea: CPS and a real tuneup.
> > > > > >
> > > > > > --
> > > > > > Will Honea <whonea@codenet.net>
> > > >
> > > > Thanks, Kevin. Thanks, Will. It just does it on the road, often when
> > > > you start up a slight incline requiring just a very light additional
> > > > load. I guess I'll have to bite the financial bullet and take down a
> > > > pocket-load of sensors and relays. The local mechanics have no
> > > > diagnostic equipment and the nearest dealer is two hours away in La
> > > > Paz and may also be not too well equipped or trained. This may be my
> > > > primary winter project. At least then I can answer the eternal
> > > > question of "What do you do all winter in Baja"?
> >
> > Good ideas. I actually changed a CPS a couple of years ago when the
> > problem was just a poor connection but have repressed just how
> > difficult it was. I suppose it'll all come back to me. For sure I'll
> > do the check-the-connectors drill first, with all fingers and toes
> > crossed. I'd much rather be fishing than skinning knuckles.
> Just remember if you are stuck and suspect the cps, just unplug it and plug
> it back in. That often yeilds a start and will work for a while
>
KH
> Yeah, that's worked for me before. In fact, I cured a friend's
Cherokee that had been to two different mechanics by doing the same
thing. Unfortunately, it hasn't worked for me this time. The
symptoms are different from anything I've had before. I suspect one
problem is that the car now lives all year about a hundred yards from
the ocean, and corrosion is incipient. I think I'll make Kragens
happy today and pick up every sensor I think might be faulty. It
galls me, but I don't see another recourse. I'll honk as we pass
through San Diego (coming from the Central Valley).
> "Rod Frazier" <elmangle@hotmail.com> wrote in message
> news:63eaf844.0310150602.b689bcc@posting.google.co m...
> > "Will Honea" <whonea@codenet.net> wrote in message
> news:<JxX2tWiP5BNp-pn2-Ed4QvuHbXFqO@anon.none.net>...
> > > I would start by cleaning the connectors around the throttle body -
> > > Throttle Position Sensor (TPS), Idle Air Control (IAC) - then get the
> > > MAP Sensor (up on the firewall) and the CPS connector (next to the
> > > fiewall pretty much under the MAP Sensor and behind the fuel rail).
> > > Wash them out with WD40, scrub with a stiff brush, blow dry and
> > > re-connect. Use a bit of silicone grease on the connector seals when
> > > you put them back. That might cure the problem and save you some
> > > swearing and skinned knuckles. BTW, for the CPS, I drop the front end
> > > of the front drive shaft so that I have more room to work. That CPS
> > > is a PITA to reach and I still have to use a couple of long extensions
> > > but moveing the shaft out of the way helps a lot.
> > >
> > > On Wed, 15 Oct 2003 00:45:05 UTC elmangle@hotmail.com (Rod Frazier)
> > > wrote:
> > >
> > > > "Kevin in San Diego" <kevin_hedstrom@yahoo.com> wrote in message
> news:<BtLib.70216$gv5.66526@fed1read05>...
> > > > > It couldnt hurt to carry a fuel pump relay.
> > > > > KH
> > > > >
> > > > > "Will Honea" <whonea@codenet.net> wrote in message
> > > > > news:JxX2tWiP5BNp-pn2-Cb0Pf6ZyF9NZ@ANON.NONE.NET...
> > > > > > On Mon, 13 Oct 2003 17:28:14 UTC elmangle@hotmail.com (Rod
> Frazier)
> > > > > > wrote:
> > > > > >
> > > > > > > Help. We have an '89 XJ with the 4.0 that we keep at our winter
> home
> > > > > > > in Mexico and it has recently started hesitating at light load
> in
> > > > > > > overdrive. Feels like the ignition is completely turned off for
> just
> > > > > > > an instant. It may happen once or twice in 20 miles or it may
> do it
> > > > > > > every minute or so. If we shift out of overdrive and increase
> the
> > > > > > > revs a bit, it either doesn't do it or we can't feel it because
> of the
> > > > > > > increased engine speed. I've replaced the plugs, wires, cap and
> > > > > > > rotor, and run through two cans of injection cleaner and checked
> all
> > > > > > > the vital connectors, including the one to the CPS, which has
> given me
> > > > > > > trouble in the past. I'm leaving for Mexico this week and would
> like
> > > > > > > to take down with me any replacement parts that might solve the
> > > > > > > problem. Anyone run across this phenomenon before?
> > > > > >
> > > > > > See if it does the same thing in 1st/2nd at low speed, light
> load -
> > > > > > about the same conditions you would get in a parking lot cruising
> > > > > > around looking for a parking spot. That was the final step on my
> 88
> > > > > > when I was trying to get it to run right and a new O2 sensor cured
> > > > > > that. If it's just under load, like high or overdrive when it's
> > > > > > pulling hard, Bill had the best idea: CPS and a real tuneup.
> > > > > >
> > > > > > --
> > > > > > Will Honea <whonea@codenet.net>
> > > >
> > > > Thanks, Kevin. Thanks, Will. It just does it on the road, often when
> > > > you start up a slight incline requiring just a very light additional
> > > > load. I guess I'll have to bite the financial bullet and take down a
> > > > pocket-load of sensors and relays. The local mechanics have no
> > > > diagnostic equipment and the nearest dealer is two hours away in La
> > > > Paz and may also be not too well equipped or trained. This may be my
> > > > primary winter project. At least then I can answer the eternal
> > > > question of "What do you do all winter in Baja"?
> >
> > Good ideas. I actually changed a CPS a couple of years ago when the
> > problem was just a poor connection but have repressed just how
> > difficult it was. I suppose it'll all come back to me. For sure I'll
> > do the check-the-connectors drill first, with all fingers and toes
> > crossed. I'd much rather be fishing than skinning knuckles.
10-16-2003, 11:54 AM
#27
Guest
Posts: n/a
Re: Hesitating XJ
"Kevin in San Diego" <kevin_hedstrom@yahoo.com> wrote in message news:<OMqjb.82489$gv5.52609@fed1read05>...
> Just remember if you are stuck and suspect the cps, just unplug it and plug
> it back in. That often yeilds a start and will work for a while
>
KH
> Yeah, that's worked for me before. In fact, I cured a friend's
Cherokee that had been to two different mechanics by doing the same
thing. Unfortunately, it hasn't worked for me this time. The
symptoms are different from anything I've had before. I suspect one
problem is that the car now lives all year about a hundred yards from
the ocean, and corrosion is incipient. I think I'll make Kragens
happy today and pick up every sensor I think might be faulty. It
galls me, but I don't see another recourse. I'll honk as we pass
through San Diego (coming from the Central Valley).
> "Rod Frazier" <elmangle@hotmail.com> wrote in message
> news:63eaf844.0310150602.b689bcc@posting.google.co m...
> > "Will Honea" <whonea@codenet.net> wrote in message
> news:<JxX2tWiP5BNp-pn2-Ed4QvuHbXFqO@anon.none.net>...
> > > I would start by cleaning the connectors around the throttle body -
> > > Throttle Position Sensor (TPS), Idle Air Control (IAC) - then get the
> > > MAP Sensor (up on the firewall) and the CPS connector (next to the
> > > fiewall pretty much under the MAP Sensor and behind the fuel rail).
> > > Wash them out with WD40, scrub with a stiff brush, blow dry and
> > > re-connect. Use a bit of silicone grease on the connector seals when
> > > you put them back. That might cure the problem and save you some
> > > swearing and skinned knuckles. BTW, for the CPS, I drop the front end
> > > of the front drive shaft so that I have more room to work. That CPS
> > > is a PITA to reach and I still have to use a couple of long extensions
> > > but moveing the shaft out of the way helps a lot.
> > >
> > > On Wed, 15 Oct 2003 00:45:05 UTC elmangle@hotmail.com (Rod Frazier)
> > > wrote:
> > >
> > > > "Kevin in San Diego" <kevin_hedstrom@yahoo.com> wrote in message
> news:<BtLib.70216$gv5.66526@fed1read05>...
> > > > > It couldnt hurt to carry a fuel pump relay.
> > > > > KH
> > > > >
> > > > > "Will Honea" <whonea@codenet.net> wrote in message
> > > > > news:JxX2tWiP5BNp-pn2-Cb0Pf6ZyF9NZ@ANON.NONE.NET...
> > > > > > On Mon, 13 Oct 2003 17:28:14 UTC elmangle@hotmail.com (Rod
> Frazier)
> > > > > > wrote:
> > > > > >
> > > > > > > Help. We have an '89 XJ with the 4.0 that we keep at our winter
> home
> > > > > > > in Mexico and it has recently started hesitating at light load
> in
> > > > > > > overdrive. Feels like the ignition is completely turned off for
> just
> > > > > > > an instant. It may happen once or twice in 20 miles or it may
> do it
> > > > > > > every minute or so. If we shift out of overdrive and increase
> the
> > > > > > > revs a bit, it either doesn't do it or we can't feel it because
> of the
> > > > > > > increased engine speed. I've replaced the plugs, wires, cap and
> > > > > > > rotor, and run through two cans of injection cleaner and checked
> all
> > > > > > > the vital connectors, including the one to the CPS, which has
> given me
> > > > > > > trouble in the past. I'm leaving for Mexico this week and would
> like
> > > > > > > to take down with me any replacement parts that might solve the
> > > > > > > problem. Anyone run across this phenomenon before?
> > > > > >
> > > > > > See if it does the same thing in 1st/2nd at low speed, light
> load -
> > > > > > about the same conditions you would get in a parking lot cruising
> > > > > > around looking for a parking spot. That was the final step on my
> 88
> > > > > > when I was trying to get it to run right and a new O2 sensor cured
> > > > > > that. If it's just under load, like high or overdrive when it's
> > > > > > pulling hard, Bill had the best idea: CPS and a real tuneup.
> > > > > >
> > > > > > --
> > > > > > Will Honea <whonea@codenet.net>
> > > >
> > > > Thanks, Kevin. Thanks, Will. It just does it on the road, often when
> > > > you start up a slight incline requiring just a very light additional
> > > > load. I guess I'll have to bite the financial bullet and take down a
> > > > pocket-load of sensors and relays. The local mechanics have no
> > > > diagnostic equipment and the nearest dealer is two hours away in La
> > > > Paz and may also be not too well equipped or trained. This may be my
> > > > primary winter project. At least then I can answer the eternal
> > > > question of "What do you do all winter in Baja"?
> >
> > Good ideas. I actually changed a CPS a couple of years ago when the
> > problem was just a poor connection but have repressed just how
> > difficult it was. I suppose it'll all come back to me. For sure I'll
> > do the check-the-connectors drill first, with all fingers and toes
> > crossed. I'd much rather be fishing than skinning knuckles.
> Just remember if you are stuck and suspect the cps, just unplug it and plug
> it back in. That often yeilds a start and will work for a while
>
KH
> Yeah, that's worked for me before. In fact, I cured a friend's
Cherokee that had been to two different mechanics by doing the same
thing. Unfortunately, it hasn't worked for me this time. The
symptoms are different from anything I've had before. I suspect one
problem is that the car now lives all year about a hundred yards from
the ocean, and corrosion is incipient. I think I'll make Kragens
happy today and pick up every sensor I think might be faulty. It
galls me, but I don't see another recourse. I'll honk as we pass
through San Diego (coming from the Central Valley).
> "Rod Frazier" <elmangle@hotmail.com> wrote in message
> news:63eaf844.0310150602.b689bcc@posting.google.co m...
> > "Will Honea" <whonea@codenet.net> wrote in message
> news:<JxX2tWiP5BNp-pn2-Ed4QvuHbXFqO@anon.none.net>...
> > > I would start by cleaning the connectors around the throttle body -
> > > Throttle Position Sensor (TPS), Idle Air Control (IAC) - then get the
> > > MAP Sensor (up on the firewall) and the CPS connector (next to the
> > > fiewall pretty much under the MAP Sensor and behind the fuel rail).
> > > Wash them out with WD40, scrub with a stiff brush, blow dry and
> > > re-connect. Use a bit of silicone grease on the connector seals when
> > > you put them back. That might cure the problem and save you some
> > > swearing and skinned knuckles. BTW, for the CPS, I drop the front end
> > > of the front drive shaft so that I have more room to work. That CPS
> > > is a PITA to reach and I still have to use a couple of long extensions
> > > but moveing the shaft out of the way helps a lot.
> > >
> > > On Wed, 15 Oct 2003 00:45:05 UTC elmangle@hotmail.com (Rod Frazier)
> > > wrote:
> > >
> > > > "Kevin in San Diego" <kevin_hedstrom@yahoo.com> wrote in message
> news:<BtLib.70216$gv5.66526@fed1read05>...
> > > > > It couldnt hurt to carry a fuel pump relay.
> > > > > KH
> > > > >
> > > > > "Will Honea" <whonea@codenet.net> wrote in message
> > > > > news:JxX2tWiP5BNp-pn2-Cb0Pf6ZyF9NZ@ANON.NONE.NET...
> > > > > > On Mon, 13 Oct 2003 17:28:14 UTC elmangle@hotmail.com (Rod
> Frazier)
> > > > > > wrote:
> > > > > >
> > > > > > > Help. We have an '89 XJ with the 4.0 that we keep at our winter
> home
> > > > > > > in Mexico and it has recently started hesitating at light load
> in
> > > > > > > overdrive. Feels like the ignition is completely turned off for
> just
> > > > > > > an instant. It may happen once or twice in 20 miles or it may
> do it
> > > > > > > every minute or so. If we shift out of overdrive and increase
> the
> > > > > > > revs a bit, it either doesn't do it or we can't feel it because
> of the
> > > > > > > increased engine speed. I've replaced the plugs, wires, cap and
> > > > > > > rotor, and run through two cans of injection cleaner and checked
> all
> > > > > > > the vital connectors, including the one to the CPS, which has
> given me
> > > > > > > trouble in the past. I'm leaving for Mexico this week and would
> like
> > > > > > > to take down with me any replacement parts that might solve the
> > > > > > > problem. Anyone run across this phenomenon before?
> > > > > >
> > > > > > See if it does the same thing in 1st/2nd at low speed, light
> load -
> > > > > > about the same conditions you would get in a parking lot cruising
> > > > > > around looking for a parking spot. That was the final step on my
> 88
> > > > > > when I was trying to get it to run right and a new O2 sensor cured
> > > > > > that. If it's just under load, like high or overdrive when it's
> > > > > > pulling hard, Bill had the best idea: CPS and a real tuneup.
> > > > > >
> > > > > > --
> > > > > > Will Honea <whonea@codenet.net>
> > > >
> > > > Thanks, Kevin. Thanks, Will. It just does it on the road, often when
> > > > you start up a slight incline requiring just a very light additional
> > > > load. I guess I'll have to bite the financial bullet and take down a
> > > > pocket-load of sensors and relays. The local mechanics have no
> > > > diagnostic equipment and the nearest dealer is two hours away in La
> > > > Paz and may also be not too well equipped or trained. This may be my
> > > > primary winter project. At least then I can answer the eternal
> > > > question of "What do you do all winter in Baja"?
> >
> > Good ideas. I actually changed a CPS a couple of years ago when the
> > problem was just a poor connection but have repressed just how
> > difficult it was. I suppose it'll all come back to me. For sure I'll
> > do the check-the-connectors drill first, with all fingers and toes
> > crossed. I'd much rather be fishing than skinning knuckles.
10-16-2003, 11:54 AM
#28
Guest
Posts: n/a
Re: Hesitating XJ
"Kevin in San Diego" <kevin_hedstrom@yahoo.com> wrote in message news:<OMqjb.82489$gv5.52609@fed1read05>...
> Just remember if you are stuck and suspect the cps, just unplug it and plug
> it back in. That often yeilds a start and will work for a while
>
KH
> Yeah, that's worked for me before. In fact, I cured a friend's
Cherokee that had been to two different mechanics by doing the same
thing. Unfortunately, it hasn't worked for me this time. The
symptoms are different from anything I've had before. I suspect one
problem is that the car now lives all year about a hundred yards from
the ocean, and corrosion is incipient. I think I'll make Kragens
happy today and pick up every sensor I think might be faulty. It
galls me, but I don't see another recourse. I'll honk as we pass
through San Diego (coming from the Central Valley).
> "Rod Frazier" <elmangle@hotmail.com> wrote in message
> news:63eaf844.0310150602.b689bcc@posting.google.co m...
> > "Will Honea" <whonea@codenet.net> wrote in message
> news:<JxX2tWiP5BNp-pn2-Ed4QvuHbXFqO@anon.none.net>...
> > > I would start by cleaning the connectors around the throttle body -
> > > Throttle Position Sensor (TPS), Idle Air Control (IAC) - then get the
> > > MAP Sensor (up on the firewall) and the CPS connector (next to the
> > > fiewall pretty much under the MAP Sensor and behind the fuel rail).
> > > Wash them out with WD40, scrub with a stiff brush, blow dry and
> > > re-connect. Use a bit of silicone grease on the connector seals when
> > > you put them back. That might cure the problem and save you some
> > > swearing and skinned knuckles. BTW, for the CPS, I drop the front end
> > > of the front drive shaft so that I have more room to work. That CPS
> > > is a PITA to reach and I still have to use a couple of long extensions
> > > but moveing the shaft out of the way helps a lot.
> > >
> > > On Wed, 15 Oct 2003 00:45:05 UTC elmangle@hotmail.com (Rod Frazier)
> > > wrote:
> > >
> > > > "Kevin in San Diego" <kevin_hedstrom@yahoo.com> wrote in message
> news:<BtLib.70216$gv5.66526@fed1read05>...
> > > > > It couldnt hurt to carry a fuel pump relay.
> > > > > KH
> > > > >
> > > > > "Will Honea" <whonea@codenet.net> wrote in message
> > > > > news:JxX2tWiP5BNp-pn2-Cb0Pf6ZyF9NZ@ANON.NONE.NET...
> > > > > > On Mon, 13 Oct 2003 17:28:14 UTC elmangle@hotmail.com (Rod
> Frazier)
> > > > > > wrote:
> > > > > >
> > > > > > > Help. We have an '89 XJ with the 4.0 that we keep at our winter
> home
> > > > > > > in Mexico and it has recently started hesitating at light load
> in
> > > > > > > overdrive. Feels like the ignition is completely turned off for
> just
> > > > > > > an instant. It may happen once or twice in 20 miles or it may
> do it
> > > > > > > every minute or so. If we shift out of overdrive and increase
> the
> > > > > > > revs a bit, it either doesn't do it or we can't feel it because
> of the
> > > > > > > increased engine speed. I've replaced the plugs, wires, cap and
> > > > > > > rotor, and run through two cans of injection cleaner and checked
> all
> > > > > > > the vital connectors, including the one to the CPS, which has
> given me
> > > > > > > trouble in the past. I'm leaving for Mexico this week and would
> like
> > > > > > > to take down with me any replacement parts that might solve the
> > > > > > > problem. Anyone run across this phenomenon before?
> > > > > >
> > > > > > See if it does the same thing in 1st/2nd at low speed, light
> load -
> > > > > > about the same conditions you would get in a parking lot cruising
> > > > > > around looking for a parking spot. That was the final step on my
> 88
> > > > > > when I was trying to get it to run right and a new O2 sensor cured
> > > > > > that. If it's just under load, like high or overdrive when it's
> > > > > > pulling hard, Bill had the best idea: CPS and a real tuneup.
> > > > > >
> > > > > > --
> > > > > > Will Honea <whonea@codenet.net>
> > > >
> > > > Thanks, Kevin. Thanks, Will. It just does it on the road, often when
> > > > you start up a slight incline requiring just a very light additional
> > > > load. I guess I'll have to bite the financial bullet and take down a
> > > > pocket-load of sensors and relays. The local mechanics have no
> > > > diagnostic equipment and the nearest dealer is two hours away in La
> > > > Paz and may also be not too well equipped or trained. This may be my
> > > > primary winter project. At least then I can answer the eternal
> > > > question of "What do you do all winter in Baja"?
> >
> > Good ideas. I actually changed a CPS a couple of years ago when the
> > problem was just a poor connection but have repressed just how
> > difficult it was. I suppose it'll all come back to me. For sure I'll
> > do the check-the-connectors drill first, with all fingers and toes
> > crossed. I'd much rather be fishing than skinning knuckles.
> Just remember if you are stuck and suspect the cps, just unplug it and plug
> it back in. That often yeilds a start and will work for a while
>
KH
> Yeah, that's worked for me before. In fact, I cured a friend's
Cherokee that had been to two different mechanics by doing the same
thing. Unfortunately, it hasn't worked for me this time. The
symptoms are different from anything I've had before. I suspect one
problem is that the car now lives all year about a hundred yards from
the ocean, and corrosion is incipient. I think I'll make Kragens
happy today and pick up every sensor I think might be faulty. It
galls me, but I don't see another recourse. I'll honk as we pass
through San Diego (coming from the Central Valley).
> "Rod Frazier" <elmangle@hotmail.com> wrote in message
> news:63eaf844.0310150602.b689bcc@posting.google.co m...
> > "Will Honea" <whonea@codenet.net> wrote in message
> news:<JxX2tWiP5BNp-pn2-Ed4QvuHbXFqO@anon.none.net>...
> > > I would start by cleaning the connectors around the throttle body -
> > > Throttle Position Sensor (TPS), Idle Air Control (IAC) - then get the
> > > MAP Sensor (up on the firewall) and the CPS connector (next to the
> > > fiewall pretty much under the MAP Sensor and behind the fuel rail).
> > > Wash them out with WD40, scrub with a stiff brush, blow dry and
> > > re-connect. Use a bit of silicone grease on the connector seals when
> > > you put them back. That might cure the problem and save you some
> > > swearing and skinned knuckles. BTW, for the CPS, I drop the front end
> > > of the front drive shaft so that I have more room to work. That CPS
> > > is a PITA to reach and I still have to use a couple of long extensions
> > > but moveing the shaft out of the way helps a lot.
> > >
> > > On Wed, 15 Oct 2003 00:45:05 UTC elmangle@hotmail.com (Rod Frazier)
> > > wrote:
> > >
> > > > "Kevin in San Diego" <kevin_hedstrom@yahoo.com> wrote in message
> news:<BtLib.70216$gv5.66526@fed1read05>...
> > > > > It couldnt hurt to carry a fuel pump relay.
> > > > > KH
> > > > >
> > > > > "Will Honea" <whonea@codenet.net> wrote in message
> > > > > news:JxX2tWiP5BNp-pn2-Cb0Pf6ZyF9NZ@ANON.NONE.NET...
> > > > > > On Mon, 13 Oct 2003 17:28:14 UTC elmangle@hotmail.com (Rod
> Frazier)
> > > > > > wrote:
> > > > > >
> > > > > > > Help. We have an '89 XJ with the 4.0 that we keep at our winter
> home
> > > > > > > in Mexico and it has recently started hesitating at light load
> in
> > > > > > > overdrive. Feels like the ignition is completely turned off for
> just
> > > > > > > an instant. It may happen once or twice in 20 miles or it may
> do it
> > > > > > > every minute or so. If we shift out of overdrive and increase
> the
> > > > > > > revs a bit, it either doesn't do it or we can't feel it because
> of the
> > > > > > > increased engine speed. I've replaced the plugs, wires, cap and
> > > > > > > rotor, and run through two cans of injection cleaner and checked
> all
> > > > > > > the vital connectors, including the one to the CPS, which has
> given me
> > > > > > > trouble in the past. I'm leaving for Mexico this week and would
> like
> > > > > > > to take down with me any replacement parts that might solve the
> > > > > > > problem. Anyone run across this phenomenon before?
> > > > > >
> > > > > > See if it does the same thing in 1st/2nd at low speed, light
> load -
> > > > > > about the same conditions you would get in a parking lot cruising
> > > > > > around looking for a parking spot. That was the final step on my
> 88
> > > > > > when I was trying to get it to run right and a new O2 sensor cured
> > > > > > that. If it's just under load, like high or overdrive when it's
> > > > > > pulling hard, Bill had the best idea: CPS and a real tuneup.
> > > > > >
> > > > > > --
> > > > > > Will Honea <whonea@codenet.net>
> > > >
> > > > Thanks, Kevin. Thanks, Will. It just does it on the road, often when
> > > > you start up a slight incline requiring just a very light additional
> > > > load. I guess I'll have to bite the financial bullet and take down a
> > > > pocket-load of sensors and relays. The local mechanics have no
> > > > diagnostic equipment and the nearest dealer is two hours away in La
> > > > Paz and may also be not too well equipped or trained. This may be my
> > > > primary winter project. At least then I can answer the eternal
> > > > question of "What do you do all winter in Baja"?
> >
> > Good ideas. I actually changed a CPS a couple of years ago when the
> > problem was just a poor connection but have repressed just how
> > difficult it was. I suppose it'll all come back to me. For sure I'll
> > do the check-the-connectors drill first, with all fingers and toes
> > crossed. I'd much rather be fishing than skinning knuckles.
10-16-2003, 07:35 PM
#29
Guest
Posts: n/a
Re: Hesitating XJ
Beep Beep
KH
"Rod Frazier" <elmangle@hotmail.com> wrote in message
news:63eaf844.0310160754.5a173a14@posting.google.c om...
> "Kevin in San Diego" <kevin_hedstrom@yahoo.com> wrote in message
news:<OMqjb.82489$gv5.52609@fed1read05>...
> > Just remember if you are stuck and suspect the cps, just unplug it and
plug
> > it back in. That often yeilds a start and will work for a while
> >
> KH
> > Yeah, that's worked for me before. In fact, I cured a friend's
> Cherokee that had been to two different mechanics by doing the same
> thing. Unfortunately, it hasn't worked for me this time. The
> symptoms are different from anything I've had before. I suspect one
> problem is that the car now lives all year about a hundred yards from
> the ocean, and corrosion is incipient. I think I'll make Kragens
> happy today and pick up every sensor I think might be faulty. It
> galls me, but I don't see another recourse. I'll honk as we pass
> through San Diego (coming from the Central Valley).
>
> > "Rod Frazier" <elmangle@hotmail.com> wrote in message
> > news:63eaf844.0310150602.b689bcc@posting.google.co m...
> > > "Will Honea" <whonea@codenet.net> wrote in message
> > news:<JxX2tWiP5BNp-pn2-Ed4QvuHbXFqO@anon.none.net>...
> > > > I would start by cleaning the connectors around the throttle body -
> > > > Throttle Position Sensor (TPS), Idle Air Control (IAC) - then get
the
> > > > MAP Sensor (up on the firewall) and the CPS connector (next to the
> > > > fiewall pretty much under the MAP Sensor and behind the fuel rail).
> > > > Wash them out with WD40, scrub with a stiff brush, blow dry and
> > > > re-connect. Use a bit of silicone grease on the connector seals
when
> > > > you put them back. That might cure the problem and save you some
> > > > swearing and skinned knuckles. BTW, for the CPS, I drop the front
end
> > > > of the front drive shaft so that I have more room to work. That CPS
> > > > is a PITA to reach and I still have to use a couple of long
extensions
> > > > but moveing the shaft out of the way helps a lot.
> > > >
> > > > On Wed, 15 Oct 2003 00:45:05 UTC elmangle@hotmail.com (Rod Frazier)
> > > > wrote:
> > > >
> > > > > "Kevin in San Diego" <kevin_hedstrom@yahoo.com> wrote in message
> > news:<BtLib.70216$gv5.66526@fed1read05>...
> > > > > > It couldnt hurt to carry a fuel pump relay.
> > > > > > KH
> > > > > >
> > > > > > "Will Honea" <whonea@codenet.net> wrote in message
> > > > > > news:JxX2tWiP5BNp-pn2-Cb0Pf6ZyF9NZ@ANON.NONE.NET...
> > > > > > > On Mon, 13 Oct 2003 17:28:14 UTC elmangle@hotmail.com (Rod
> > Frazier)
> > > > > > > wrote:
> > > > > > >
> > > > > > > > Help. We have an '89 XJ with the 4.0 that we keep at our
winter
> > home
> > > > > > > > in Mexico and it has recently started hesitating at light
load
> > in
> > > > > > > > overdrive. Feels like the ignition is completely turned off
for
> > just
> > > > > > > > an instant. It may happen once or twice in 20 miles or it
may
> > do it
> > > > > > > > every minute or so. If we shift out of overdrive and
increase
> > the
> > > > > > > > revs a bit, it either doesn't do it or we can't feel it
because
> > of the
> > > > > > > > increased engine speed. I've replaced the plugs, wires, cap
and
> > > > > > > > rotor, and run through two cans of injection cleaner and
checked
> > all
> > > > > > > > the vital connectors, including the one to the CPS, which
has
> > given me
> > > > > > > > trouble in the past. I'm leaving for Mexico this week and
would
> > like
> > > > > > > > to take down with me any replacement parts that might solve
the
> > > > > > > > problem. Anyone run across this phenomenon before?
> > > > > > >
> > > > > > > See if it does the same thing in 1st/2nd at low speed, light
> > load -
> > > > > > > about the same conditions you would get in a parking lot
cruising
> > > > > > > around looking for a parking spot. That was the final step on
my
> > 88
> > > > > > > when I was trying to get it to run right and a new O2 sensor
cured
> > > > > > > that. If it's just under load, like high or overdrive when
it's
> > > > > > > pulling hard, Bill had the best idea: CPS and a real tuneup.
> > > > > > >
> > > > > > > --
> > > > > > > Will Honea <whonea@codenet.net>
> > > > >
> > > > > Thanks, Kevin. Thanks, Will. It just does it on the road, often
when
> > > > > you start up a slight incline requiring just a very light
additional
> > > > > load. I guess I'll have to bite the financial bullet and take
down a
> > > > > pocket-load of sensors and relays. The local mechanics have no
> > > > > diagnostic equipment and the nearest dealer is two hours away in
La
> > > > > Paz and may also be not too well equipped or trained. This may be
my
> > > > > primary winter project. At least then I can answer the eternal
> > > > > question of "What do you do all winter in Baja"?
> > >
> > > Good ideas. I actually changed a CPS a couple of years ago when the
> > > problem was just a poor connection but have repressed just how
> > > difficult it was. I suppose it'll all come back to me. For sure I'll
> > > do the check-the-connectors drill first, with all fingers and toes
> > > crossed. I'd much rather be fishing than skinning knuckles.
KH
"Rod Frazier" <elmangle@hotmail.com> wrote in message
news:63eaf844.0310160754.5a173a14@posting.google.c om...
> "Kevin in San Diego" <kevin_hedstrom@yahoo.com> wrote in message
news:<OMqjb.82489$gv5.52609@fed1read05>...
> > Just remember if you are stuck and suspect the cps, just unplug it and
plug
> > it back in. That often yeilds a start and will work for a while
> >
> KH
> > Yeah, that's worked for me before. In fact, I cured a friend's
> Cherokee that had been to two different mechanics by doing the same
> thing. Unfortunately, it hasn't worked for me this time. The
> symptoms are different from anything I've had before. I suspect one
> problem is that the car now lives all year about a hundred yards from
> the ocean, and corrosion is incipient. I think I'll make Kragens
> happy today and pick up every sensor I think might be faulty. It
> galls me, but I don't see another recourse. I'll honk as we pass
> through San Diego (coming from the Central Valley).
>
> > "Rod Frazier" <elmangle@hotmail.com> wrote in message
> > news:63eaf844.0310150602.b689bcc@posting.google.co m...
> > > "Will Honea" <whonea@codenet.net> wrote in message
> > news:<JxX2tWiP5BNp-pn2-Ed4QvuHbXFqO@anon.none.net>...
> > > > I would start by cleaning the connectors around the throttle body -
> > > > Throttle Position Sensor (TPS), Idle Air Control (IAC) - then get
the
> > > > MAP Sensor (up on the firewall) and the CPS connector (next to the
> > > > fiewall pretty much under the MAP Sensor and behind the fuel rail).
> > > > Wash them out with WD40, scrub with a stiff brush, blow dry and
> > > > re-connect. Use a bit of silicone grease on the connector seals
when
> > > > you put them back. That might cure the problem and save you some
> > > > swearing and skinned knuckles. BTW, for the CPS, I drop the front
end
> > > > of the front drive shaft so that I have more room to work. That CPS
> > > > is a PITA to reach and I still have to use a couple of long
extensions
> > > > but moveing the shaft out of the way helps a lot.
> > > >
> > > > On Wed, 15 Oct 2003 00:45:05 UTC elmangle@hotmail.com (Rod Frazier)
> > > > wrote:
> > > >
> > > > > "Kevin in San Diego" <kevin_hedstrom@yahoo.com> wrote in message
> > news:<BtLib.70216$gv5.66526@fed1read05>...
> > > > > > It couldnt hurt to carry a fuel pump relay.
> > > > > > KH
> > > > > >
> > > > > > "Will Honea" <whonea@codenet.net> wrote in message
> > > > > > news:JxX2tWiP5BNp-pn2-Cb0Pf6ZyF9NZ@ANON.NONE.NET...
> > > > > > > On Mon, 13 Oct 2003 17:28:14 UTC elmangle@hotmail.com (Rod
> > Frazier)
> > > > > > > wrote:
> > > > > > >
> > > > > > > > Help. We have an '89 XJ with the 4.0 that we keep at our
winter
> > home
> > > > > > > > in Mexico and it has recently started hesitating at light
load
> > in
> > > > > > > > overdrive. Feels like the ignition is completely turned off
for
> > just
> > > > > > > > an instant. It may happen once or twice in 20 miles or it
may
> > do it
> > > > > > > > every minute or so. If we shift out of overdrive and
increase
> > the
> > > > > > > > revs a bit, it either doesn't do it or we can't feel it
because
> > of the
> > > > > > > > increased engine speed. I've replaced the plugs, wires, cap
and
> > > > > > > > rotor, and run through two cans of injection cleaner and
checked
> > all
> > > > > > > > the vital connectors, including the one to the CPS, which
has
> > given me
> > > > > > > > trouble in the past. I'm leaving for Mexico this week and
would
> > like
> > > > > > > > to take down with me any replacement parts that might solve
the
> > > > > > > > problem. Anyone run across this phenomenon before?
> > > > > > >
> > > > > > > See if it does the same thing in 1st/2nd at low speed, light
> > load -
> > > > > > > about the same conditions you would get in a parking lot
cruising
> > > > > > > around looking for a parking spot. That was the final step on
my
> > 88
> > > > > > > when I was trying to get it to run right and a new O2 sensor
cured
> > > > > > > that. If it's just under load, like high or overdrive when
it's
> > > > > > > pulling hard, Bill had the best idea: CPS and a real tuneup.
> > > > > > >
> > > > > > > --
> > > > > > > Will Honea <whonea@codenet.net>
> > > > >
> > > > > Thanks, Kevin. Thanks, Will. It just does it on the road, often
when
> > > > > you start up a slight incline requiring just a very light
additional
> > > > > load. I guess I'll have to bite the financial bullet and take
down a
> > > > > pocket-load of sensors and relays. The local mechanics have no
> > > > > diagnostic equipment and the nearest dealer is two hours away in
La
> > > > > Paz and may also be not too well equipped or trained. This may be
my
> > > > > primary winter project. At least then I can answer the eternal
> > > > > question of "What do you do all winter in Baja"?
> > >
> > > Good ideas. I actually changed a CPS a couple of years ago when the
> > > problem was just a poor connection but have repressed just how
> > > difficult it was. I suppose it'll all come back to me. For sure I'll
> > > do the check-the-connectors drill first, with all fingers and toes
> > > crossed. I'd much rather be fishing than skinning knuckles.
10-16-2003, 07:35 PM
#30
Guest
Posts: n/a
Re: Hesitating XJ
Beep Beep
KH
"Rod Frazier" <elmangle@hotmail.com> wrote in message
news:63eaf844.0310160754.5a173a14@posting.google.c om...
> "Kevin in San Diego" <kevin_hedstrom@yahoo.com> wrote in message
news:<OMqjb.82489$gv5.52609@fed1read05>...
> > Just remember if you are stuck and suspect the cps, just unplug it and
plug
> > it back in. That often yeilds a start and will work for a while
> >
> KH
> > Yeah, that's worked for me before. In fact, I cured a friend's
> Cherokee that had been to two different mechanics by doing the same
> thing. Unfortunately, it hasn't worked for me this time. The
> symptoms are different from anything I've had before. I suspect one
> problem is that the car now lives all year about a hundred yards from
> the ocean, and corrosion is incipient. I think I'll make Kragens
> happy today and pick up every sensor I think might be faulty. It
> galls me, but I don't see another recourse. I'll honk as we pass
> through San Diego (coming from the Central Valley).
>
> > "Rod Frazier" <elmangle@hotmail.com> wrote in message
> > news:63eaf844.0310150602.b689bcc@posting.google.co m...
> > > "Will Honea" <whonea@codenet.net> wrote in message
> > news:<JxX2tWiP5BNp-pn2-Ed4QvuHbXFqO@anon.none.net>...
> > > > I would start by cleaning the connectors around the throttle body -
> > > > Throttle Position Sensor (TPS), Idle Air Control (IAC) - then get
the
> > > > MAP Sensor (up on the firewall) and the CPS connector (next to the
> > > > fiewall pretty much under the MAP Sensor and behind the fuel rail).
> > > > Wash them out with WD40, scrub with a stiff brush, blow dry and
> > > > re-connect. Use a bit of silicone grease on the connector seals
when
> > > > you put them back. That might cure the problem and save you some
> > > > swearing and skinned knuckles. BTW, for the CPS, I drop the front
end
> > > > of the front drive shaft so that I have more room to work. That CPS
> > > > is a PITA to reach and I still have to use a couple of long
extensions
> > > > but moveing the shaft out of the way helps a lot.
> > > >
> > > > On Wed, 15 Oct 2003 00:45:05 UTC elmangle@hotmail.com (Rod Frazier)
> > > > wrote:
> > > >
> > > > > "Kevin in San Diego" <kevin_hedstrom@yahoo.com> wrote in message
> > news:<BtLib.70216$gv5.66526@fed1read05>...
> > > > > > It couldnt hurt to carry a fuel pump relay.
> > > > > > KH
> > > > > >
> > > > > > "Will Honea" <whonea@codenet.net> wrote in message
> > > > > > news:JxX2tWiP5BNp-pn2-Cb0Pf6ZyF9NZ@ANON.NONE.NET...
> > > > > > > On Mon, 13 Oct 2003 17:28:14 UTC elmangle@hotmail.com (Rod
> > Frazier)
> > > > > > > wrote:
> > > > > > >
> > > > > > > > Help. We have an '89 XJ with the 4.0 that we keep at our
winter
> > home
> > > > > > > > in Mexico and it has recently started hesitating at light
load
> > in
> > > > > > > > overdrive. Feels like the ignition is completely turned off
for
> > just
> > > > > > > > an instant. It may happen once or twice in 20 miles or it
may
> > do it
> > > > > > > > every minute or so. If we shift out of overdrive and
increase
> > the
> > > > > > > > revs a bit, it either doesn't do it or we can't feel it
because
> > of the
> > > > > > > > increased engine speed. I've replaced the plugs, wires, cap
and
> > > > > > > > rotor, and run through two cans of injection cleaner and
checked
> > all
> > > > > > > > the vital connectors, including the one to the CPS, which
has
> > given me
> > > > > > > > trouble in the past. I'm leaving for Mexico this week and
would
> > like
> > > > > > > > to take down with me any replacement parts that might solve
the
> > > > > > > > problem. Anyone run across this phenomenon before?
> > > > > > >
> > > > > > > See if it does the same thing in 1st/2nd at low speed, light
> > load -
> > > > > > > about the same conditions you would get in a parking lot
cruising
> > > > > > > around looking for a parking spot. That was the final step on
my
> > 88
> > > > > > > when I was trying to get it to run right and a new O2 sensor
cured
> > > > > > > that. If it's just under load, like high or overdrive when
it's
> > > > > > > pulling hard, Bill had the best idea: CPS and a real tuneup.
> > > > > > >
> > > > > > > --
> > > > > > > Will Honea <whonea@codenet.net>
> > > > >
> > > > > Thanks, Kevin. Thanks, Will. It just does it on the road, often
when
> > > > > you start up a slight incline requiring just a very light
additional
> > > > > load. I guess I'll have to bite the financial bullet and take
down a
> > > > > pocket-load of sensors and relays. The local mechanics have no
> > > > > diagnostic equipment and the nearest dealer is two hours away in
La
> > > > > Paz and may also be not too well equipped or trained. This may be
my
> > > > > primary winter project. At least then I can answer the eternal
> > > > > question of "What do you do all winter in Baja"?
> > >
> > > Good ideas. I actually changed a CPS a couple of years ago when the
> > > problem was just a poor connection but have repressed just how
> > > difficult it was. I suppose it'll all come back to me. For sure I'll
> > > do the check-the-connectors drill first, with all fingers and toes
> > > crossed. I'd much rather be fishing than skinning knuckles.
KH
"Rod Frazier" <elmangle@hotmail.com> wrote in message
news:63eaf844.0310160754.5a173a14@posting.google.c om...
> "Kevin in San Diego" <kevin_hedstrom@yahoo.com> wrote in message
news:<OMqjb.82489$gv5.52609@fed1read05>...
> > Just remember if you are stuck and suspect the cps, just unplug it and
plug
> > it back in. That often yeilds a start and will work for a while
> >
> KH
> > Yeah, that's worked for me before. In fact, I cured a friend's
> Cherokee that had been to two different mechanics by doing the same
> thing. Unfortunately, it hasn't worked for me this time. The
> symptoms are different from anything I've had before. I suspect one
> problem is that the car now lives all year about a hundred yards from
> the ocean, and corrosion is incipient. I think I'll make Kragens
> happy today and pick up every sensor I think might be faulty. It
> galls me, but I don't see another recourse. I'll honk as we pass
> through San Diego (coming from the Central Valley).
>
> > "Rod Frazier" <elmangle@hotmail.com> wrote in message
> > news:63eaf844.0310150602.b689bcc@posting.google.co m...
> > > "Will Honea" <whonea@codenet.net> wrote in message
> > news:<JxX2tWiP5BNp-pn2-Ed4QvuHbXFqO@anon.none.net>...
> > > > I would start by cleaning the connectors around the throttle body -
> > > > Throttle Position Sensor (TPS), Idle Air Control (IAC) - then get
the
> > > > MAP Sensor (up on the firewall) and the CPS connector (next to the
> > > > fiewall pretty much under the MAP Sensor and behind the fuel rail).
> > > > Wash them out with WD40, scrub with a stiff brush, blow dry and
> > > > re-connect. Use a bit of silicone grease on the connector seals
when
> > > > you put them back. That might cure the problem and save you some
> > > > swearing and skinned knuckles. BTW, for the CPS, I drop the front
end
> > > > of the front drive shaft so that I have more room to work. That CPS
> > > > is a PITA to reach and I still have to use a couple of long
extensions
> > > > but moveing the shaft out of the way helps a lot.
> > > >
> > > > On Wed, 15 Oct 2003 00:45:05 UTC elmangle@hotmail.com (Rod Frazier)
> > > > wrote:
> > > >
> > > > > "Kevin in San Diego" <kevin_hedstrom@yahoo.com> wrote in message
> > news:<BtLib.70216$gv5.66526@fed1read05>...
> > > > > > It couldnt hurt to carry a fuel pump relay.
> > > > > > KH
> > > > > >
> > > > > > "Will Honea" <whonea@codenet.net> wrote in message
> > > > > > news:JxX2tWiP5BNp-pn2-Cb0Pf6ZyF9NZ@ANON.NONE.NET...
> > > > > > > On Mon, 13 Oct 2003 17:28:14 UTC elmangle@hotmail.com (Rod
> > Frazier)
> > > > > > > wrote:
> > > > > > >
> > > > > > > > Help. We have an '89 XJ with the 4.0 that we keep at our
winter
> > home
> > > > > > > > in Mexico and it has recently started hesitating at light
load
> > in
> > > > > > > > overdrive. Feels like the ignition is completely turned off
for
> > just
> > > > > > > > an instant. It may happen once or twice in 20 miles or it
may
> > do it
> > > > > > > > every minute or so. If we shift out of overdrive and
increase
> > the
> > > > > > > > revs a bit, it either doesn't do it or we can't feel it
because
> > of the
> > > > > > > > increased engine speed. I've replaced the plugs, wires, cap
and
> > > > > > > > rotor, and run through two cans of injection cleaner and
checked
> > all
> > > > > > > > the vital connectors, including the one to the CPS, which
has
> > given me
> > > > > > > > trouble in the past. I'm leaving for Mexico this week and
would
> > like
> > > > > > > > to take down with me any replacement parts that might solve
the
> > > > > > > > problem. Anyone run across this phenomenon before?
> > > > > > >
> > > > > > > See if it does the same thing in 1st/2nd at low speed, light
> > load -
> > > > > > > about the same conditions you would get in a parking lot
cruising
> > > > > > > around looking for a parking spot. That was the final step on
my
> > 88
> > > > > > > when I was trying to get it to run right and a new O2 sensor
cured
> > > > > > > that. If it's just under load, like high or overdrive when
it's
> > > > > > > pulling hard, Bill had the best idea: CPS and a real tuneup.
> > > > > > >
> > > > > > > --
> > > > > > > Will Honea <whonea@codenet.net>
> > > > >
> > > > > Thanks, Kevin. Thanks, Will. It just does it on the road, often
when
> > > > > you start up a slight incline requiring just a very light
additional
> > > > > load. I guess I'll have to bite the financial bullet and take
down a
> > > > > pocket-load of sensors and relays. The local mechanics have no
> > > > > diagnostic equipment and the nearest dealer is two hours away in
La
> > > > > Paz and may also be not too well equipped or trained. This may be
my
> > > > > primary winter project. At least then I can answer the eternal
> > > > > question of "What do you do all winter in Baja"?
> > >
> > > Good ideas. I actually changed a CPS a couple of years ago when the
> > > problem was just a poor connection but have repressed just how
> > > difficult it was. I suppose it'll all come back to me. For sure I'll
> > > do the check-the-connectors drill first, with all fingers and toes
> > > crossed. I'd much rather be fishing than skinning knuckles.