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. |
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. |
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. |
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. |
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. |
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. |
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. |
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. |
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. |
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. |
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