'93 GCherokee 6 Hard Start
#151
Guest
Posts: n/a
Re: '93 GCherokee 6 Hard Start
Well Doug, thanks. You have been a seriously good mentor in this.
So, if I get it into them, I ask them to check in out with a DRB Scantool?
The dude at Autozone had said some time ago, that the 93 couldn't be hooked
up to computer. You had to go by the ignition on/off/on/off etc. codes.
Those are cleared now of course.
Well, I've sure learned a lot anyway. I'll post what the final outcome is.
Denny
"DougW" <post.replies@invalid.address> wrote in message
news:_x%Jb.53495$PK3.47954@okepread01...
> D did pass the time by typing:
> > Doug, et All,
> > Okay, all it back together.
> > I have 9 vdc, yes 9 not 8, at pin 1 feeding the CPS and also to the
CamPS.
>
> That's within range.
>
> > I have 5 vdc at pin 1 of the TPS and pin 3 at the MAP sensor.
> > I put the Temp Sender in warm water and watched the resistance go down.
> > Pulled and cleaned the Auto Shutdown Relay. (And thumped it lightly)
> > Checked the power to the PCM and have 12+vdc.
> > Grounds from the PCM connectore showed continuity.
> > Now, I f'd something up. I have no fuel pressure.
>
> Here is the pump circuit.
> http://members.***.net/wilsond/temp/13.jpg
>
> > Of course, no spark either.
> > I am cleaning and securing connections as I go. What the heck could I
have
> > done now to lose fuel pressure?
>
> Hard to say. Having the PCM out for an extended time resets lots of
> things. (nothing bad) Double check all pins are there and none have
> gotten bent. You can follow the schematic to see if the relay is getting
> power and if there is power there for the pump.
>
> > I'm going to go curl up in a fetal position for a few minutes.
>
> I know the feeling. Did the exact same thing new years morning.
>
> There comes a time where you might have to bite the bullet and
> have your local service department hook up the DRB scantool and
> see what they can find. It's not as cheap as DIY, but then again
> think of the cost in time you have put into it so far.
>
> --
> DougW
>
>
So, if I get it into them, I ask them to check in out with a DRB Scantool?
The dude at Autozone had said some time ago, that the 93 couldn't be hooked
up to computer. You had to go by the ignition on/off/on/off etc. codes.
Those are cleared now of course.
Well, I've sure learned a lot anyway. I'll post what the final outcome is.
Denny
"DougW" <post.replies@invalid.address> wrote in message
news:_x%Jb.53495$PK3.47954@okepread01...
> D did pass the time by typing:
> > Doug, et All,
> > Okay, all it back together.
> > I have 9 vdc, yes 9 not 8, at pin 1 feeding the CPS and also to the
CamPS.
>
> That's within range.
>
> > I have 5 vdc at pin 1 of the TPS and pin 3 at the MAP sensor.
> > I put the Temp Sender in warm water and watched the resistance go down.
> > Pulled and cleaned the Auto Shutdown Relay. (And thumped it lightly)
> > Checked the power to the PCM and have 12+vdc.
> > Grounds from the PCM connectore showed continuity.
> > Now, I f'd something up. I have no fuel pressure.
>
> Here is the pump circuit.
> http://members.***.net/wilsond/temp/13.jpg
>
> > Of course, no spark either.
> > I am cleaning and securing connections as I go. What the heck could I
have
> > done now to lose fuel pressure?
>
> Hard to say. Having the PCM out for an extended time resets lots of
> things. (nothing bad) Double check all pins are there and none have
> gotten bent. You can follow the schematic to see if the relay is getting
> power and if there is power there for the pump.
>
> > I'm going to go curl up in a fetal position for a few minutes.
>
> I know the feeling. Did the exact same thing new years morning.
>
> There comes a time where you might have to bite the bullet and
> have your local service department hook up the DRB scantool and
> see what they can find. It's not as cheap as DIY, but then again
> think of the cost in time you have put into it so far.
>
> --
> DougW
>
>
#152
Guest
Posts: n/a
Re: '93 GCherokee 6 Hard Start
D did pass the time by typing:
> Well Doug, thanks. You have been a seriously good mentor in this.
> So, if I get it into them, I ask them to check in out with a DRB Scantool?
Yep.
> The dude at Autozone had said some time ago, that the 93 couldn't be hooked
> up to computer. You had to go by the ignition on/off/on/off etc. codes.
> Those are cleared now of course.
> Well, I've sure learned a lot anyway. I'll post what the final outcome is.
> Denny
That's Autozone for you. The ZJ can be hooked up to a computer via the
connector next to the ECU.
93 is the first generation OBD (On Board Diagnostics) system. Later years
used OBDII. You can get the tool from several places. All depends on how
much service you expect to get out of it.
http://store.yahoo.com/rodi/auez50.html
--
DougW
> Well Doug, thanks. You have been a seriously good mentor in this.
> So, if I get it into them, I ask them to check in out with a DRB Scantool?
Yep.
> The dude at Autozone had said some time ago, that the 93 couldn't be hooked
> up to computer. You had to go by the ignition on/off/on/off etc. codes.
> Those are cleared now of course.
> Well, I've sure learned a lot anyway. I'll post what the final outcome is.
> Denny
That's Autozone for you. The ZJ can be hooked up to a computer via the
connector next to the ECU.
93 is the first generation OBD (On Board Diagnostics) system. Later years
used OBDII. You can get the tool from several places. All depends on how
much service you expect to get out of it.
http://store.yahoo.com/rodi/auez50.html
--
DougW
#153
Guest
Posts: n/a
Re: '93 GCherokee 6 Hard Start
D did pass the time by typing:
> Well Doug, thanks. You have been a seriously good mentor in this.
> So, if I get it into them, I ask them to check in out with a DRB Scantool?
Yep.
> The dude at Autozone had said some time ago, that the 93 couldn't be hooked
> up to computer. You had to go by the ignition on/off/on/off etc. codes.
> Those are cleared now of course.
> Well, I've sure learned a lot anyway. I'll post what the final outcome is.
> Denny
That's Autozone for you. The ZJ can be hooked up to a computer via the
connector next to the ECU.
93 is the first generation OBD (On Board Diagnostics) system. Later years
used OBDII. You can get the tool from several places. All depends on how
much service you expect to get out of it.
http://store.yahoo.com/rodi/auez50.html
--
DougW
> Well Doug, thanks. You have been a seriously good mentor in this.
> So, if I get it into them, I ask them to check in out with a DRB Scantool?
Yep.
> The dude at Autozone had said some time ago, that the 93 couldn't be hooked
> up to computer. You had to go by the ignition on/off/on/off etc. codes.
> Those are cleared now of course.
> Well, I've sure learned a lot anyway. I'll post what the final outcome is.
> Denny
That's Autozone for you. The ZJ can be hooked up to a computer via the
connector next to the ECU.
93 is the first generation OBD (On Board Diagnostics) system. Later years
used OBDII. You can get the tool from several places. All depends on how
much service you expect to get out of it.
http://store.yahoo.com/rodi/auez50.html
--
DougW
#154
Guest
Posts: n/a
Re: '93 GCherokee 6 Hard Start
D did pass the time by typing:
> Well Doug, thanks. You have been a seriously good mentor in this.
> So, if I get it into them, I ask them to check in out with a DRB Scantool?
Yep.
> The dude at Autozone had said some time ago, that the 93 couldn't be hooked
> up to computer. You had to go by the ignition on/off/on/off etc. codes.
> Those are cleared now of course.
> Well, I've sure learned a lot anyway. I'll post what the final outcome is.
> Denny
That's Autozone for you. The ZJ can be hooked up to a computer via the
connector next to the ECU.
93 is the first generation OBD (On Board Diagnostics) system. Later years
used OBDII. You can get the tool from several places. All depends on how
much service you expect to get out of it.
http://store.yahoo.com/rodi/auez50.html
--
DougW
> Well Doug, thanks. You have been a seriously good mentor in this.
> So, if I get it into them, I ask them to check in out with a DRB Scantool?
Yep.
> The dude at Autozone had said some time ago, that the 93 couldn't be hooked
> up to computer. You had to go by the ignition on/off/on/off etc. codes.
> Those are cleared now of course.
> Well, I've sure learned a lot anyway. I'll post what the final outcome is.
> Denny
That's Autozone for you. The ZJ can be hooked up to a computer via the
connector next to the ECU.
93 is the first generation OBD (On Board Diagnostics) system. Later years
used OBDII. You can get the tool from several places. All depends on how
much service you expect to get out of it.
http://store.yahoo.com/rodi/auez50.html
--
DougW
#155
Guest
Posts: n/a
Re: '93 GCherokee 6 Hard Start
Hi All,
Still no start on this old Jeep. I was hoping to eventually get a code 11 on
diagnostics, but after disconnectin gthe PCM and all, I just get codes 12
and 55.
After doing a Google search several times, it seems everybody and his
brother is changing out the CPS to good results. Think I'm going to do just
that and see what happens. Thoughts?
Anyway, I have to shotgun it this way. Can't afford the shop plus the tow.
I can't tell you all, Doug, Bill, Jerry and more how much I appreciate your
help.
Denny
"D" <dpfer@r.com> wrote in message
news:WB%Ib.27143$fq1.14626@twister.rdc-kc.rr.com...
> Hi Guys,
> I'm the one that has the 93 Grand Cherokee that wouldn't start when the
> temperature got down into the 30's. It's a Grand old lady with 200K plus
on
> her with the 4.0 inline six engine.
<snip>
Still no start on this old Jeep. I was hoping to eventually get a code 11 on
diagnostics, but after disconnectin gthe PCM and all, I just get codes 12
and 55.
After doing a Google search several times, it seems everybody and his
brother is changing out the CPS to good results. Think I'm going to do just
that and see what happens. Thoughts?
Anyway, I have to shotgun it this way. Can't afford the shop plus the tow.
I can't tell you all, Doug, Bill, Jerry and more how much I appreciate your
help.
Denny
"D" <dpfer@r.com> wrote in message
news:WB%Ib.27143$fq1.14626@twister.rdc-kc.rr.com...
> Hi Guys,
> I'm the one that has the 93 Grand Cherokee that wouldn't start when the
> temperature got down into the 30's. It's a Grand old lady with 200K plus
on
> her with the 4.0 inline six engine.
<snip>
#156
Guest
Posts: n/a
Re: '93 GCherokee 6 Hard Start
Hi All,
Still no start on this old Jeep. I was hoping to eventually get a code 11 on
diagnostics, but after disconnectin gthe PCM and all, I just get codes 12
and 55.
After doing a Google search several times, it seems everybody and his
brother is changing out the CPS to good results. Think I'm going to do just
that and see what happens. Thoughts?
Anyway, I have to shotgun it this way. Can't afford the shop plus the tow.
I can't tell you all, Doug, Bill, Jerry and more how much I appreciate your
help.
Denny
"D" <dpfer@r.com> wrote in message
news:WB%Ib.27143$fq1.14626@twister.rdc-kc.rr.com...
> Hi Guys,
> I'm the one that has the 93 Grand Cherokee that wouldn't start when the
> temperature got down into the 30's. It's a Grand old lady with 200K plus
on
> her with the 4.0 inline six engine.
<snip>
Still no start on this old Jeep. I was hoping to eventually get a code 11 on
diagnostics, but after disconnectin gthe PCM and all, I just get codes 12
and 55.
After doing a Google search several times, it seems everybody and his
brother is changing out the CPS to good results. Think I'm going to do just
that and see what happens. Thoughts?
Anyway, I have to shotgun it this way. Can't afford the shop plus the tow.
I can't tell you all, Doug, Bill, Jerry and more how much I appreciate your
help.
Denny
"D" <dpfer@r.com> wrote in message
news:WB%Ib.27143$fq1.14626@twister.rdc-kc.rr.com...
> Hi Guys,
> I'm the one that has the 93 Grand Cherokee that wouldn't start when the
> temperature got down into the 30's. It's a Grand old lady with 200K plus
on
> her with the 4.0 inline six engine.
<snip>
#157
Guest
Posts: n/a
Re: '93 GCherokee 6 Hard Start
Hi All,
Still no start on this old Jeep. I was hoping to eventually get a code 11 on
diagnostics, but after disconnectin gthe PCM and all, I just get codes 12
and 55.
After doing a Google search several times, it seems everybody and his
brother is changing out the CPS to good results. Think I'm going to do just
that and see what happens. Thoughts?
Anyway, I have to shotgun it this way. Can't afford the shop plus the tow.
I can't tell you all, Doug, Bill, Jerry and more how much I appreciate your
help.
Denny
"D" <dpfer@r.com> wrote in message
news:WB%Ib.27143$fq1.14626@twister.rdc-kc.rr.com...
> Hi Guys,
> I'm the one that has the 93 Grand Cherokee that wouldn't start when the
> temperature got down into the 30's. It's a Grand old lady with 200K plus
on
> her with the 4.0 inline six engine.
<snip>
Still no start on this old Jeep. I was hoping to eventually get a code 11 on
diagnostics, but after disconnectin gthe PCM and all, I just get codes 12
and 55.
After doing a Google search several times, it seems everybody and his
brother is changing out the CPS to good results. Think I'm going to do just
that and see what happens. Thoughts?
Anyway, I have to shotgun it this way. Can't afford the shop plus the tow.
I can't tell you all, Doug, Bill, Jerry and more how much I appreciate your
help.
Denny
"D" <dpfer@r.com> wrote in message
news:WB%Ib.27143$fq1.14626@twister.rdc-kc.rr.com...
> Hi Guys,
> I'm the one that has the 93 Grand Cherokee that wouldn't start when the
> temperature got down into the 30's. It's a Grand old lady with 200K plus
on
> her with the 4.0 inline six engine.
<snip>
#158
Guest
Posts: n/a
Re: '93 GCherokee 6 Hard Start
Oh, forgot to tell you, I have good fuel pressure again now. Must have had
to cycle through a couple times.
"D" <dpfer@r.com> wrote in message
news:HQ5Kb.18727$VV4.1953@twister.rdc-kc.rr.com...
> Hi All,
> Still no start on this old Jeep. I was hoping to eventually get a code 11
on
> diagnostics, but after disconnectin gthe PCM and all, I just get codes 12
> and 55.
> After doing a Google search several times, it seems everybody and his
> brother is changing out the CPS to good results. Think I'm going to do
just
> that and see what happens. Thoughts?
> Anyway, I have to shotgun it this way. Can't afford the shop plus the tow.
> I can't tell you all, Doug, Bill, Jerry and more how much I appreciate
your
> help.
> Denny
>
> "D" <dpfer@r.com> wrote in message
> news:WB%Ib.27143$fq1.14626@twister.rdc-kc.rr.com...
> > Hi Guys,
> > I'm the one that has the 93 Grand Cherokee that wouldn't start when the
> > temperature got down into the 30's. It's a Grand old lady with 200K plus
> on
> > her with the 4.0 inline six engine.
> <snip>
>
>
to cycle through a couple times.
"D" <dpfer@r.com> wrote in message
news:HQ5Kb.18727$VV4.1953@twister.rdc-kc.rr.com...
> Hi All,
> Still no start on this old Jeep. I was hoping to eventually get a code 11
on
> diagnostics, but after disconnectin gthe PCM and all, I just get codes 12
> and 55.
> After doing a Google search several times, it seems everybody and his
> brother is changing out the CPS to good results. Think I'm going to do
just
> that and see what happens. Thoughts?
> Anyway, I have to shotgun it this way. Can't afford the shop plus the tow.
> I can't tell you all, Doug, Bill, Jerry and more how much I appreciate
your
> help.
> Denny
>
> "D" <dpfer@r.com> wrote in message
> news:WB%Ib.27143$fq1.14626@twister.rdc-kc.rr.com...
> > Hi Guys,
> > I'm the one that has the 93 Grand Cherokee that wouldn't start when the
> > temperature got down into the 30's. It's a Grand old lady with 200K plus
> on
> > her with the 4.0 inline six engine.
> <snip>
>
>
#159
Guest
Posts: n/a
Re: '93 GCherokee 6 Hard Start
Oh, forgot to tell you, I have good fuel pressure again now. Must have had
to cycle through a couple times.
"D" <dpfer@r.com> wrote in message
news:HQ5Kb.18727$VV4.1953@twister.rdc-kc.rr.com...
> Hi All,
> Still no start on this old Jeep. I was hoping to eventually get a code 11
on
> diagnostics, but after disconnectin gthe PCM and all, I just get codes 12
> and 55.
> After doing a Google search several times, it seems everybody and his
> brother is changing out the CPS to good results. Think I'm going to do
just
> that and see what happens. Thoughts?
> Anyway, I have to shotgun it this way. Can't afford the shop plus the tow.
> I can't tell you all, Doug, Bill, Jerry and more how much I appreciate
your
> help.
> Denny
>
> "D" <dpfer@r.com> wrote in message
> news:WB%Ib.27143$fq1.14626@twister.rdc-kc.rr.com...
> > Hi Guys,
> > I'm the one that has the 93 Grand Cherokee that wouldn't start when the
> > temperature got down into the 30's. It's a Grand old lady with 200K plus
> on
> > her with the 4.0 inline six engine.
> <snip>
>
>
to cycle through a couple times.
"D" <dpfer@r.com> wrote in message
news:HQ5Kb.18727$VV4.1953@twister.rdc-kc.rr.com...
> Hi All,
> Still no start on this old Jeep. I was hoping to eventually get a code 11
on
> diagnostics, but after disconnectin gthe PCM and all, I just get codes 12
> and 55.
> After doing a Google search several times, it seems everybody and his
> brother is changing out the CPS to good results. Think I'm going to do
just
> that and see what happens. Thoughts?
> Anyway, I have to shotgun it this way. Can't afford the shop plus the tow.
> I can't tell you all, Doug, Bill, Jerry and more how much I appreciate
your
> help.
> Denny
>
> "D" <dpfer@r.com> wrote in message
> news:WB%Ib.27143$fq1.14626@twister.rdc-kc.rr.com...
> > Hi Guys,
> > I'm the one that has the 93 Grand Cherokee that wouldn't start when the
> > temperature got down into the 30's. It's a Grand old lady with 200K plus
> on
> > her with the 4.0 inline six engine.
> <snip>
>
>
#160
Guest
Posts: n/a
Re: '93 GCherokee 6 Hard Start
Oh, forgot to tell you, I have good fuel pressure again now. Must have had
to cycle through a couple times.
"D" <dpfer@r.com> wrote in message
news:HQ5Kb.18727$VV4.1953@twister.rdc-kc.rr.com...
> Hi All,
> Still no start on this old Jeep. I was hoping to eventually get a code 11
on
> diagnostics, but after disconnectin gthe PCM and all, I just get codes 12
> and 55.
> After doing a Google search several times, it seems everybody and his
> brother is changing out the CPS to good results. Think I'm going to do
just
> that and see what happens. Thoughts?
> Anyway, I have to shotgun it this way. Can't afford the shop plus the tow.
> I can't tell you all, Doug, Bill, Jerry and more how much I appreciate
your
> help.
> Denny
>
> "D" <dpfer@r.com> wrote in message
> news:WB%Ib.27143$fq1.14626@twister.rdc-kc.rr.com...
> > Hi Guys,
> > I'm the one that has the 93 Grand Cherokee that wouldn't start when the
> > temperature got down into the 30's. It's a Grand old lady with 200K plus
> on
> > her with the 4.0 inline six engine.
> <snip>
>
>
to cycle through a couple times.
"D" <dpfer@r.com> wrote in message
news:HQ5Kb.18727$VV4.1953@twister.rdc-kc.rr.com...
> Hi All,
> Still no start on this old Jeep. I was hoping to eventually get a code 11
on
> diagnostics, but after disconnectin gthe PCM and all, I just get codes 12
> and 55.
> After doing a Google search several times, it seems everybody and his
> brother is changing out the CPS to good results. Think I'm going to do
just
> that and see what happens. Thoughts?
> Anyway, I have to shotgun it this way. Can't afford the shop plus the tow.
> I can't tell you all, Doug, Bill, Jerry and more how much I appreciate
your
> help.
> Denny
>
> "D" <dpfer@r.com> wrote in message
> news:WB%Ib.27143$fq1.14626@twister.rdc-kc.rr.com...
> > Hi Guys,
> > I'm the one that has the 93 Grand Cherokee that wouldn't start when the
> > temperature got down into the 30's. It's a Grand old lady with 200K plus
> on
> > her with the 4.0 inline six engine.
> <snip>
>
>
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