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Tom Russell 10-27-2003 01:01 AM

Help Please Jeep Cherokee won't start No Spark
 
Hi:

I've got a 1996 Jeep Cherokee. 4.0 with a standard transmission. I
parked her a couple of nights ago and she wouldn't start up again. I
checked for spark and got none. (Hopefully I'm doing that properly) I
checked for and found no loose wires. I looked at the Distributor Cap
and rotor. Both appear to be fine. They were both changed two weeks
ago along with the new plugs and wires.

My first instinct was the electronic control module. According to
Jeep, this model does not have a module. Instead, it uses an onboard
computer module.
At almost $500, I'm not crazy about swapping that out unless I know
its really at fault. For kicks, I put on a new coil. No change.

I spoke to a mechanic who suggested a Transmission Sensor ( I think
thats what he said...)Couldn't find reference to it in the Haynes
manual I have.

I'm about ready to have it pulled into the shop. Before I do, I
thought I'd check to see if any of you folks had any ideas.

Up till now (6.5 yearrs 185K miles) she has run flawlessly. I
mentioned earlier that I had just changed the plugs, rotor, cap and
wires. She ran well for a week or so. Then *poof*

Any idea's would be appreciated.

Thanks in advance.

Tom

Will Honea 10-27-2003 02:24 AM

Re: Help Please Jeep Cherokee won't start No Spark
 
You're describing a dead Crank Position Sensor - mounts on the top of
the bellhousing so the transmission reference the mech made is
appropriate to the location. Well worth the $35-$40 and an hour worth
of cussing the two hard to reach bolts since it's a common problem.
All the manuals I've seen give a fairly simple test for a completely
shot sensor using a VOM. Try unplugging it, clean the contacts, and
plugging it back in. The plug is right up by the firewall just behind
the fuel rail - look for a wire that runs down to the top of the bell
housing.

On Mon, 27 Oct 2003 06:01:17 UTC tomr@ix.netcom.com (Tom Russell)
wrote:

> Hi:
>
> I've got a 1996 Jeep Cherokee. 4.0 with a standard transmission. I
> parked her a couple of nights ago and she wouldn't start up again. I
> checked for spark and got none. (Hopefully I'm doing that properly) I
> checked for and found no loose wires. I looked at the Distributor Cap
> and rotor. Both appear to be fine. They were both changed two weeks
> ago along with the new plugs and wires.
>
> My first instinct was the electronic control module. According to
> Jeep, this model does not have a module. Instead, it uses an onboard
> computer module.
> At almost $500, I'm not crazy about swapping that out unless I know
> its really at fault. For kicks, I put on a new coil. No change.
>
> I spoke to a mechanic who suggested a Transmission Sensor ( I think
> thats what he said...)Couldn't find reference to it in the Haynes
> manual I have.
>
> I'm about ready to have it pulled into the shop. Before I do, I
> thought I'd check to see if any of you folks had any ideas.
>
> Up till now (6.5 yearrs 185K miles) she has run flawlessly. I
> mentioned earlier that I had just changed the plugs, rotor, cap and
> wires. She ran well for a week or so. Then *poof*
>
> Any idea's would be appreciated.
>
> Thanks in advance.
>
> Tom



--
Will Honea <whonea@codenet.net>

Will Honea 10-27-2003 02:24 AM

Re: Help Please Jeep Cherokee won't start No Spark
 
You're describing a dead Crank Position Sensor - mounts on the top of
the bellhousing so the transmission reference the mech made is
appropriate to the location. Well worth the $35-$40 and an hour worth
of cussing the two hard to reach bolts since it's a common problem.
All the manuals I've seen give a fairly simple test for a completely
shot sensor using a VOM. Try unplugging it, clean the contacts, and
plugging it back in. The plug is right up by the firewall just behind
the fuel rail - look for a wire that runs down to the top of the bell
housing.

On Mon, 27 Oct 2003 06:01:17 UTC tomr@ix.netcom.com (Tom Russell)
wrote:

> Hi:
>
> I've got a 1996 Jeep Cherokee. 4.0 with a standard transmission. I
> parked her a couple of nights ago and she wouldn't start up again. I
> checked for spark and got none. (Hopefully I'm doing that properly) I
> checked for and found no loose wires. I looked at the Distributor Cap
> and rotor. Both appear to be fine. They were both changed two weeks
> ago along with the new plugs and wires.
>
> My first instinct was the electronic control module. According to
> Jeep, this model does not have a module. Instead, it uses an onboard
> computer module.
> At almost $500, I'm not crazy about swapping that out unless I know
> its really at fault. For kicks, I put on a new coil. No change.
>
> I spoke to a mechanic who suggested a Transmission Sensor ( I think
> thats what he said...)Couldn't find reference to it in the Haynes
> manual I have.
>
> I'm about ready to have it pulled into the shop. Before I do, I
> thought I'd check to see if any of you folks had any ideas.
>
> Up till now (6.5 yearrs 185K miles) she has run flawlessly. I
> mentioned earlier that I had just changed the plugs, rotor, cap and
> wires. She ran well for a week or so. Then *poof*
>
> Any idea's would be appreciated.
>
> Thanks in advance.
>
> Tom



--
Will Honea <whonea@codenet.net>

Will Honea 10-27-2003 02:24 AM

Re: Help Please Jeep Cherokee won't start No Spark
 
You're describing a dead Crank Position Sensor - mounts on the top of
the bellhousing so the transmission reference the mech made is
appropriate to the location. Well worth the $35-$40 and an hour worth
of cussing the two hard to reach bolts since it's a common problem.
All the manuals I've seen give a fairly simple test for a completely
shot sensor using a VOM. Try unplugging it, clean the contacts, and
plugging it back in. The plug is right up by the firewall just behind
the fuel rail - look for a wire that runs down to the top of the bell
housing.

On Mon, 27 Oct 2003 06:01:17 UTC tomr@ix.netcom.com (Tom Russell)
wrote:

> Hi:
>
> I've got a 1996 Jeep Cherokee. 4.0 with a standard transmission. I
> parked her a couple of nights ago and she wouldn't start up again. I
> checked for spark and got none. (Hopefully I'm doing that properly) I
> checked for and found no loose wires. I looked at the Distributor Cap
> and rotor. Both appear to be fine. They were both changed two weeks
> ago along with the new plugs and wires.
>
> My first instinct was the electronic control module. According to
> Jeep, this model does not have a module. Instead, it uses an onboard
> computer module.
> At almost $500, I'm not crazy about swapping that out unless I know
> its really at fault. For kicks, I put on a new coil. No change.
>
> I spoke to a mechanic who suggested a Transmission Sensor ( I think
> thats what he said...)Couldn't find reference to it in the Haynes
> manual I have.
>
> I'm about ready to have it pulled into the shop. Before I do, I
> thought I'd check to see if any of you folks had any ideas.
>
> Up till now (6.5 yearrs 185K miles) she has run flawlessly. I
> mentioned earlier that I had just changed the plugs, rotor, cap and
> wires. She ran well for a week or so. Then *poof*
>
> Any idea's would be appreciated.
>
> Thanks in advance.
>
> Tom



--
Will Honea <whonea@codenet.net>

Ron K 10-27-2003 08:37 AM

Re: Help Please Jeep Cherokee won't start No Spark
 
He is referring to the top dead sensor switch on the bell housing, find it
unplug it then plug it back in it should start one time. When it is shut off
it will not start again until its replaced.
Ron K
"Tom Russell" <tomr@ix.netcom.com> wrote in message
news:83403696.0310262201.198eeb62@posting.google.c om...
> Hi:
>
> I've got a 1996 Jeep Cherokee. 4.0 with a standard transmission. I
> parked her a couple of nights ago and she wouldn't start up again. I
> checked for spark and got none. (Hopefully I'm doing that properly) I
> checked for and found no loose wires. I looked at the Distributor Cap
> and rotor. Both appear to be fine. They were both changed two weeks
> ago along with the new plugs and wires.
>
> My first instinct was the electronic control module. According to
> Jeep, this model does not have a module. Instead, it uses an onboard
> computer module.
> At almost $500, I'm not crazy about swapping that out unless I know
> its really at fault. For kicks, I put on a new coil. No change.
>
> I spoke to a mechanic who suggested a Transmission Sensor ( I think
> thats what he said...)Couldn't find reference to it in the Haynes
> manual I have.
>
> I'm about ready to have it pulled into the shop. Before I do, I
> thought I'd check to see if any of you folks had any ideas.
>
> Up till now (6.5 yearrs 185K miles) she has run flawlessly. I
> mentioned earlier that I had just changed the plugs, rotor, cap and
> wires. She ran well for a week or so. Then *poof*
>
> Any idea's would be appreciated.
>
> Thanks in advance.
>
> Tom




Ron K 10-27-2003 08:37 AM

Re: Help Please Jeep Cherokee won't start No Spark
 
He is referring to the top dead sensor switch on the bell housing, find it
unplug it then plug it back in it should start one time. When it is shut off
it will not start again until its replaced.
Ron K
"Tom Russell" <tomr@ix.netcom.com> wrote in message
news:83403696.0310262201.198eeb62@posting.google.c om...
> Hi:
>
> I've got a 1996 Jeep Cherokee. 4.0 with a standard transmission. I
> parked her a couple of nights ago and she wouldn't start up again. I
> checked for spark and got none. (Hopefully I'm doing that properly) I
> checked for and found no loose wires. I looked at the Distributor Cap
> and rotor. Both appear to be fine. They were both changed two weeks
> ago along with the new plugs and wires.
>
> My first instinct was the electronic control module. According to
> Jeep, this model does not have a module. Instead, it uses an onboard
> computer module.
> At almost $500, I'm not crazy about swapping that out unless I know
> its really at fault. For kicks, I put on a new coil. No change.
>
> I spoke to a mechanic who suggested a Transmission Sensor ( I think
> thats what he said...)Couldn't find reference to it in the Haynes
> manual I have.
>
> I'm about ready to have it pulled into the shop. Before I do, I
> thought I'd check to see if any of you folks had any ideas.
>
> Up till now (6.5 yearrs 185K miles) she has run flawlessly. I
> mentioned earlier that I had just changed the plugs, rotor, cap and
> wires. She ran well for a week or so. Then *poof*
>
> Any idea's would be appreciated.
>
> Thanks in advance.
>
> Tom




Ron K 10-27-2003 08:37 AM

Re: Help Please Jeep Cherokee won't start No Spark
 
He is referring to the top dead sensor switch on the bell housing, find it
unplug it then plug it back in it should start one time. When it is shut off
it will not start again until its replaced.
Ron K
"Tom Russell" <tomr@ix.netcom.com> wrote in message
news:83403696.0310262201.198eeb62@posting.google.c om...
> Hi:
>
> I've got a 1996 Jeep Cherokee. 4.0 with a standard transmission. I
> parked her a couple of nights ago and she wouldn't start up again. I
> checked for spark and got none. (Hopefully I'm doing that properly) I
> checked for and found no loose wires. I looked at the Distributor Cap
> and rotor. Both appear to be fine. They were both changed two weeks
> ago along with the new plugs and wires.
>
> My first instinct was the electronic control module. According to
> Jeep, this model does not have a module. Instead, it uses an onboard
> computer module.
> At almost $500, I'm not crazy about swapping that out unless I know
> its really at fault. For kicks, I put on a new coil. No change.
>
> I spoke to a mechanic who suggested a Transmission Sensor ( I think
> thats what he said...)Couldn't find reference to it in the Haynes
> manual I have.
>
> I'm about ready to have it pulled into the shop. Before I do, I
> thought I'd check to see if any of you folks had any ideas.
>
> Up till now (6.5 yearrs 185K miles) she has run flawlessly. I
> mentioned earlier that I had just changed the plugs, rotor, cap and
> wires. She ran well for a week or so. Then *poof*
>
> Any idea's would be appreciated.
>
> Thanks in advance.
>
> Tom




Tom Russell 10-27-2003 09:33 AM

Re: Help Please Jeep Cherokee won't start No Spark
 
Cool. THAT is what the mechanic guy said. I'll give it a try.

Thank you very much.

TWR

"Will Honea" <whonea@codenet.net> wrote in message news:<JxX2tWiP5BNp-pn2-HJBV0Vfd5dSw@anon.none.net>...
> You're describing a dead Crank Position Sensor - mounts on the top of
> the bellhousing so the transmission reference the mech made is
> appropriate to the location. Well worth the $35-$40 and an hour worth
> of cussing the two hard to reach bolts since it's a common problem.
> All the manuals I've seen give a fairly simple test for a completely
> shot sensor using a VOM. Try unplugging it, clean the contacts, and
> plugging it back in. The plug is right up by the firewall just behind
> the fuel rail - look for a wire that runs down to the top of the bell
> housing.
>
> On Mon, 27 Oct 2003 06:01:17 UTC tomr@ix.netcom.com (Tom Russell)
> wrote:
>
> > Hi:
> >
> > I've got a 1996 Jeep Cherokee. 4.0 with a standard transmission. I
> > parked her a couple of nights ago and she wouldn't start up again. I
> > checked for spark and got none. (Hopefully I'm doing that properly) I
> > checked for and found no loose wires. I looked at the Distributor Cap
> > and rotor. Both appear to be fine. They were both changed two weeks
> > ago along with the new plugs and wires.
> >
> > My first instinct was the electronic control module. According to
> > Jeep, this model does not have a module. Instead, it uses an onboard
> > computer module.
> > At almost $500, I'm not crazy about swapping that out unless I know
> > its really at fault. For kicks, I put on a new coil. No change.
> >
> > I spoke to a mechanic who suggested a Transmission Sensor ( I think
> > thats what he said...)Couldn't find reference to it in the Haynes
> > manual I have.
> >
> > I'm about ready to have it pulled into the shop. Before I do, I
> > thought I'd check to see if any of you folks had any ideas.
> >
> > Up till now (6.5 yearrs 185K miles) she has run flawlessly. I
> > mentioned earlier that I had just changed the plugs, rotor, cap and
> > wires. She ran well for a week or so. Then *poof*
> >
> > Any idea's would be appreciated.
> >
> > Thanks in advance.
> >
> > Tom


Tom Russell 10-27-2003 09:33 AM

Re: Help Please Jeep Cherokee won't start No Spark
 
Cool. THAT is what the mechanic guy said. I'll give it a try.

Thank you very much.

TWR

"Will Honea" <whonea@codenet.net> wrote in message news:<JxX2tWiP5BNp-pn2-HJBV0Vfd5dSw@anon.none.net>...
> You're describing a dead Crank Position Sensor - mounts on the top of
> the bellhousing so the transmission reference the mech made is
> appropriate to the location. Well worth the $35-$40 and an hour worth
> of cussing the two hard to reach bolts since it's a common problem.
> All the manuals I've seen give a fairly simple test for a completely
> shot sensor using a VOM. Try unplugging it, clean the contacts, and
> plugging it back in. The plug is right up by the firewall just behind
> the fuel rail - look for a wire that runs down to the top of the bell
> housing.
>
> On Mon, 27 Oct 2003 06:01:17 UTC tomr@ix.netcom.com (Tom Russell)
> wrote:
>
> > Hi:
> >
> > I've got a 1996 Jeep Cherokee. 4.0 with a standard transmission. I
> > parked her a couple of nights ago and she wouldn't start up again. I
> > checked for spark and got none. (Hopefully I'm doing that properly) I
> > checked for and found no loose wires. I looked at the Distributor Cap
> > and rotor. Both appear to be fine. They were both changed two weeks
> > ago along with the new plugs and wires.
> >
> > My first instinct was the electronic control module. According to
> > Jeep, this model does not have a module. Instead, it uses an onboard
> > computer module.
> > At almost $500, I'm not crazy about swapping that out unless I know
> > its really at fault. For kicks, I put on a new coil. No change.
> >
> > I spoke to a mechanic who suggested a Transmission Sensor ( I think
> > thats what he said...)Couldn't find reference to it in the Haynes
> > manual I have.
> >
> > I'm about ready to have it pulled into the shop. Before I do, I
> > thought I'd check to see if any of you folks had any ideas.
> >
> > Up till now (6.5 yearrs 185K miles) she has run flawlessly. I
> > mentioned earlier that I had just changed the plugs, rotor, cap and
> > wires. She ran well for a week or so. Then *poof*
> >
> > Any idea's would be appreciated.
> >
> > Thanks in advance.
> >
> > Tom


Tom Russell 10-27-2003 09:33 AM

Re: Help Please Jeep Cherokee won't start No Spark
 
Cool. THAT is what the mechanic guy said. I'll give it a try.

Thank you very much.

TWR

"Will Honea" <whonea@codenet.net> wrote in message news:<JxX2tWiP5BNp-pn2-HJBV0Vfd5dSw@anon.none.net>...
> You're describing a dead Crank Position Sensor - mounts on the top of
> the bellhousing so the transmission reference the mech made is
> appropriate to the location. Well worth the $35-$40 and an hour worth
> of cussing the two hard to reach bolts since it's a common problem.
> All the manuals I've seen give a fairly simple test for a completely
> shot sensor using a VOM. Try unplugging it, clean the contacts, and
> plugging it back in. The plug is right up by the firewall just behind
> the fuel rail - look for a wire that runs down to the top of the bell
> housing.
>
> On Mon, 27 Oct 2003 06:01:17 UTC tomr@ix.netcom.com (Tom Russell)
> wrote:
>
> > Hi:
> >
> > I've got a 1996 Jeep Cherokee. 4.0 with a standard transmission. I
> > parked her a couple of nights ago and she wouldn't start up again. I
> > checked for spark and got none. (Hopefully I'm doing that properly) I
> > checked for and found no loose wires. I looked at the Distributor Cap
> > and rotor. Both appear to be fine. They were both changed two weeks
> > ago along with the new plugs and wires.
> >
> > My first instinct was the electronic control module. According to
> > Jeep, this model does not have a module. Instead, it uses an onboard
> > computer module.
> > At almost $500, I'm not crazy about swapping that out unless I know
> > its really at fault. For kicks, I put on a new coil. No change.
> >
> > I spoke to a mechanic who suggested a Transmission Sensor ( I think
> > thats what he said...)Couldn't find reference to it in the Haynes
> > manual I have.
> >
> > I'm about ready to have it pulled into the shop. Before I do, I
> > thought I'd check to see if any of you folks had any ideas.
> >
> > Up till now (6.5 yearrs 185K miles) she has run flawlessly. I
> > mentioned earlier that I had just changed the plugs, rotor, cap and
> > wires. She ran well for a week or so. Then *poof*
> >
> > Any idea's would be appreciated.
> >
> > Thanks in advance.
> >
> > Tom


Tom Russell 10-27-2003 08:42 PM

Re: Help Please Jeep Cherokee won't start No Spark
 
No luck. Sent it to a the shop. No luck there either. They say that
there is no power getting to this switch or to the onboard computer.
They are probing for loose wires etc.

Damn

TWR

"Ron K" <rrrr@rnet.com> wrote in message news:<wc9nb.1754$Vl4.545240113@twister2.starband.n et>...
> He is referring to the top dead sensor switch on the bell housing, find it
> unplug it then plug it back in it should start one time. When it is shut off
> it will not start again until its replaced.
> Ron K
> "Tom Russell" <tomr@ix.netcom.com> wrote in message
> news:83403696.0310262201.198eeb62@posting.google.c om...
> > Hi:
> >
> > I've got a 1996 Jeep Cherokee. 4.0 with a standard transmission. I
> > parked her a couple of nights ago and she wouldn't start up again. I
> > checked for spark and got none. (Hopefully I'm doing that properly) I
> > checked for and found no loose wires. I looked at the Distributor Cap
> > and rotor. Both appear to be fine. They were both changed two weeks
> > ago along with the new plugs and wires.
> >
> > My first instinct was the electronic control module. According to
> > Jeep, this model does not have a module. Instead, it uses an onboard
> > computer module.
> > At almost $500, I'm not crazy about swapping that out unless I know
> > its really at fault. For kicks, I put on a new coil. No change.
> >
> > I spoke to a mechanic who suggested a Transmission Sensor ( I think
> > thats what he said...)Couldn't find reference to it in the Haynes
> > manual I have.
> >
> > I'm about ready to have it pulled into the shop. Before I do, I
> > thought I'd check to see if any of you folks had any ideas.
> >
> > Up till now (6.5 yearrs 185K miles) she has run flawlessly. I
> > mentioned earlier that I had just changed the plugs, rotor, cap and
> > wires. She ran well for a week or so. Then *poof*
> >
> > Any idea's would be appreciated.
> >
> > Thanks in advance.
> >
> > Tom


Tom Russell 10-27-2003 08:42 PM

Re: Help Please Jeep Cherokee won't start No Spark
 
No luck. Sent it to a the shop. No luck there either. They say that
there is no power getting to this switch or to the onboard computer.
They are probing for loose wires etc.

Damn

TWR

"Ron K" <rrrr@rnet.com> wrote in message news:<wc9nb.1754$Vl4.545240113@twister2.starband.n et>...
> He is referring to the top dead sensor switch on the bell housing, find it
> unplug it then plug it back in it should start one time. When it is shut off
> it will not start again until its replaced.
> Ron K
> "Tom Russell" <tomr@ix.netcom.com> wrote in message
> news:83403696.0310262201.198eeb62@posting.google.c om...
> > Hi:
> >
> > I've got a 1996 Jeep Cherokee. 4.0 with a standard transmission. I
> > parked her a couple of nights ago and she wouldn't start up again. I
> > checked for spark and got none. (Hopefully I'm doing that properly) I
> > checked for and found no loose wires. I looked at the Distributor Cap
> > and rotor. Both appear to be fine. They were both changed two weeks
> > ago along with the new plugs and wires.
> >
> > My first instinct was the electronic control module. According to
> > Jeep, this model does not have a module. Instead, it uses an onboard
> > computer module.
> > At almost $500, I'm not crazy about swapping that out unless I know
> > its really at fault. For kicks, I put on a new coil. No change.
> >
> > I spoke to a mechanic who suggested a Transmission Sensor ( I think
> > thats what he said...)Couldn't find reference to it in the Haynes
> > manual I have.
> >
> > I'm about ready to have it pulled into the shop. Before I do, I
> > thought I'd check to see if any of you folks had any ideas.
> >
> > Up till now (6.5 yearrs 185K miles) she has run flawlessly. I
> > mentioned earlier that I had just changed the plugs, rotor, cap and
> > wires. She ran well for a week or so. Then *poof*
> >
> > Any idea's would be appreciated.
> >
> > Thanks in advance.
> >
> > Tom


Tom Russell 10-27-2003 08:42 PM

Re: Help Please Jeep Cherokee won't start No Spark
 
No luck. Sent it to a the shop. No luck there either. They say that
there is no power getting to this switch or to the onboard computer.
They are probing for loose wires etc.

Damn

TWR

"Ron K" <rrrr@rnet.com> wrote in message news:<wc9nb.1754$Vl4.545240113@twister2.starband.n et>...
> He is referring to the top dead sensor switch on the bell housing, find it
> unplug it then plug it back in it should start one time. When it is shut off
> it will not start again until its replaced.
> Ron K
> "Tom Russell" <tomr@ix.netcom.com> wrote in message
> news:83403696.0310262201.198eeb62@posting.google.c om...
> > Hi:
> >
> > I've got a 1996 Jeep Cherokee. 4.0 with a standard transmission. I
> > parked her a couple of nights ago and she wouldn't start up again. I
> > checked for spark and got none. (Hopefully I'm doing that properly) I
> > checked for and found no loose wires. I looked at the Distributor Cap
> > and rotor. Both appear to be fine. They were both changed two weeks
> > ago along with the new plugs and wires.
> >
> > My first instinct was the electronic control module. According to
> > Jeep, this model does not have a module. Instead, it uses an onboard
> > computer module.
> > At almost $500, I'm not crazy about swapping that out unless I know
> > its really at fault. For kicks, I put on a new coil. No change.
> >
> > I spoke to a mechanic who suggested a Transmission Sensor ( I think
> > thats what he said...)Couldn't find reference to it in the Haynes
> > manual I have.
> >
> > I'm about ready to have it pulled into the shop. Before I do, I
> > thought I'd check to see if any of you folks had any ideas.
> >
> > Up till now (6.5 yearrs 185K miles) she has run flawlessly. I
> > mentioned earlier that I had just changed the plugs, rotor, cap and
> > wires. She ran well for a week or so. Then *poof*
> >
> > Any idea's would be appreciated.
> >
> > Thanks in advance.
> >
> > Tom


Lee Ayrton 10-28-2003 08:16 AM

Re: Help Please Jeep Cherokee won't start No Spark
 

When my `89 Cherokee 4.0L won't start, I'll unplug the sensor, replug it
and then I'm good to go for several months. I'm told 1) that it tends to
get confused after oil changes and that 2) Jeep knew that it was a problem
and issued a fix that didn't make it better.


On or about Mon, 27 Oct 2003, Ron K of rrrr@rnet.com wrote:

> He is referring to the top dead sensor switch on the bell housing, find
> it unplug it then plug it back in it should start one time. When it is
> shut off it will not start again until its replaced. Ron K "Tom Russell"
> <tomr@ix.netcom.com> wrote in message
> news:83403696.0310262201.198eeb62@posting.google.c om...
> > Hi:
> >
> > I've got a 1996 Jeep Cherokee. 4.0 with a standard transmission. I
> > parked her a couple of nights ago and she wouldn't start up again. I
> > checked for spark and got none. (Hopefully I'm doing that properly) I
> > checked for and found no loose wires. I looked at the Distributor Cap
> > and rotor. Both appear to be fine. They were both changed two weeks
> > ago along with the new plugs and wires.
> >
> > My first instinct was the electronic control module. According to
> > Jeep, this model does not have a module. Instead, it uses an onboard
> > computer module.
> > At almost $500, I'm not crazy about swapping that out unless I know
> > its really at fault. For kicks, I put on a new coil. No change.
> >
> > I spoke to a mechanic who suggested a Transmission Sensor ( I think
> > thats what he said...)Couldn't find reference to it in the Haynes
> > manual I have.
> >
> > I'm about ready to have it pulled into the shop. Before I do, I
> > thought I'd check to see if any of you folks had any ideas.
> >
> > Up till now (6.5 yearrs 185K miles) she has run flawlessly. I
> > mentioned earlier that I had just changed the plugs, rotor, cap and
> > wires. She ran well for a week or so. Then *poof*
> >
> > Any idea's would be appreciated.
> >
> > Thanks in advance.
> >
> > Tom

>
>
>


--
"doing whatever it took to capture world marketing shares, even as far
as having multiple satellites circling the globe to ensure complete
coverage and maximum profit potential."

Tealady spills the beans on AFU's new business plan.




Lee Ayrton 10-28-2003 08:16 AM

Re: Help Please Jeep Cherokee won't start No Spark
 

When my `89 Cherokee 4.0L won't start, I'll unplug the sensor, replug it
and then I'm good to go for several months. I'm told 1) that it tends to
get confused after oil changes and that 2) Jeep knew that it was a problem
and issued a fix that didn't make it better.


On or about Mon, 27 Oct 2003, Ron K of rrrr@rnet.com wrote:

> He is referring to the top dead sensor switch on the bell housing, find
> it unplug it then plug it back in it should start one time. When it is
> shut off it will not start again until its replaced. Ron K "Tom Russell"
> <tomr@ix.netcom.com> wrote in message
> news:83403696.0310262201.198eeb62@posting.google.c om...
> > Hi:
> >
> > I've got a 1996 Jeep Cherokee. 4.0 with a standard transmission. I
> > parked her a couple of nights ago and she wouldn't start up again. I
> > checked for spark and got none. (Hopefully I'm doing that properly) I
> > checked for and found no loose wires. I looked at the Distributor Cap
> > and rotor. Both appear to be fine. They were both changed two weeks
> > ago along with the new plugs and wires.
> >
> > My first instinct was the electronic control module. According to
> > Jeep, this model does not have a module. Instead, it uses an onboard
> > computer module.
> > At almost $500, I'm not crazy about swapping that out unless I know
> > its really at fault. For kicks, I put on a new coil. No change.
> >
> > I spoke to a mechanic who suggested a Transmission Sensor ( I think
> > thats what he said...)Couldn't find reference to it in the Haynes
> > manual I have.
> >
> > I'm about ready to have it pulled into the shop. Before I do, I
> > thought I'd check to see if any of you folks had any ideas.
> >
> > Up till now (6.5 yearrs 185K miles) she has run flawlessly. I
> > mentioned earlier that I had just changed the plugs, rotor, cap and
> > wires. She ran well for a week or so. Then *poof*
> >
> > Any idea's would be appreciated.
> >
> > Thanks in advance.
> >
> > Tom

>
>
>


--
"doing whatever it took to capture world marketing shares, even as far
as having multiple satellites circling the globe to ensure complete
coverage and maximum profit potential."

Tealady spills the beans on AFU's new business plan.




Lee Ayrton 10-28-2003 08:16 AM

Re: Help Please Jeep Cherokee won't start No Spark
 

When my `89 Cherokee 4.0L won't start, I'll unplug the sensor, replug it
and then I'm good to go for several months. I'm told 1) that it tends to
get confused after oil changes and that 2) Jeep knew that it was a problem
and issued a fix that didn't make it better.


On or about Mon, 27 Oct 2003, Ron K of rrrr@rnet.com wrote:

> He is referring to the top dead sensor switch on the bell housing, find
> it unplug it then plug it back in it should start one time. When it is
> shut off it will not start again until its replaced. Ron K "Tom Russell"
> <tomr@ix.netcom.com> wrote in message
> news:83403696.0310262201.198eeb62@posting.google.c om...
> > Hi:
> >
> > I've got a 1996 Jeep Cherokee. 4.0 with a standard transmission. I
> > parked her a couple of nights ago and she wouldn't start up again. I
> > checked for spark and got none. (Hopefully I'm doing that properly) I
> > checked for and found no loose wires. I looked at the Distributor Cap
> > and rotor. Both appear to be fine. They were both changed two weeks
> > ago along with the new plugs and wires.
> >
> > My first instinct was the electronic control module. According to
> > Jeep, this model does not have a module. Instead, it uses an onboard
> > computer module.
> > At almost $500, I'm not crazy about swapping that out unless I know
> > its really at fault. For kicks, I put on a new coil. No change.
> >
> > I spoke to a mechanic who suggested a Transmission Sensor ( I think
> > thats what he said...)Couldn't find reference to it in the Haynes
> > manual I have.
> >
> > I'm about ready to have it pulled into the shop. Before I do, I
> > thought I'd check to see if any of you folks had any ideas.
> >
> > Up till now (6.5 yearrs 185K miles) she has run flawlessly. I
> > mentioned earlier that I had just changed the plugs, rotor, cap and
> > wires. She ran well for a week or so. Then *poof*
> >
> > Any idea's would be appreciated.
> >
> > Thanks in advance.
> >
> > Tom

>
>
>


--
"doing whatever it took to capture world marketing shares, even as far
as having multiple satellites circling the globe to ensure complete
coverage and maximum profit potential."

Tealady spills the beans on AFU's new business plan.




Mike Romain 10-28-2003 09:53 AM

Re: Help Please Jeep Cherokee won't start No Spark
 
The ground strap from the engine to firewall supply the power.

Mine went ratty and it acted like a dead CPS.

Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
88 Cherokee 235 BFG AT's

Tom Russell wrote:
>
> No luck. Sent it to a the shop. No luck there either. They say that
> there is no power getting to this switch or to the onboard computer.
> They are probing for loose wires etc.
>
> Damn
>
> TWR
>
> "Ron K" <rrrr@rnet.com> wrote in message news:<wc9nb.1754$Vl4.545240113@twister2.starband.n et>...
> > He is referring to the top dead sensor switch on the bell housing, find it
> > unplug it then plug it back in it should start one time. When it is shut off
> > it will not start again until its replaced.
> > Ron K
> > "Tom Russell" <tomr@ix.netcom.com> wrote in message
> > news:83403696.0310262201.198eeb62@posting.google.c om...
> > > Hi:
> > >
> > > I've got a 1996 Jeep Cherokee. 4.0 with a standard transmission. I
> > > parked her a couple of nights ago and she wouldn't start up again. I
> > > checked for spark and got none. (Hopefully I'm doing that properly) I
> > > checked for and found no loose wires. I looked at the Distributor Cap
> > > and rotor. Both appear to be fine. They were both changed two weeks
> > > ago along with the new plugs and wires.
> > >
> > > My first instinct was the electronic control module. According to
> > > Jeep, this model does not have a module. Instead, it uses an onboard
> > > computer module.
> > > At almost $500, I'm not crazy about swapping that out unless I know
> > > its really at fault. For kicks, I put on a new coil. No change.
> > >
> > > I spoke to a mechanic who suggested a Transmission Sensor ( I think
> > > thats what he said...)Couldn't find reference to it in the Haynes
> > > manual I have.
> > >
> > > I'm about ready to have it pulled into the shop. Before I do, I
> > > thought I'd check to see if any of you folks had any ideas.
> > >
> > > Up till now (6.5 yearrs 185K miles) she has run flawlessly. I
> > > mentioned earlier that I had just changed the plugs, rotor, cap and
> > > wires. She ran well for a week or so. Then *poof*
> > >
> > > Any idea's would be appreciated.
> > >
> > > Thanks in advance.
> > >
> > > Tom


Mike Romain 10-28-2003 09:53 AM

Re: Help Please Jeep Cherokee won't start No Spark
 
The ground strap from the engine to firewall supply the power.

Mine went ratty and it acted like a dead CPS.

Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
88 Cherokee 235 BFG AT's

Tom Russell wrote:
>
> No luck. Sent it to a the shop. No luck there either. They say that
> there is no power getting to this switch or to the onboard computer.
> They are probing for loose wires etc.
>
> Damn
>
> TWR
>
> "Ron K" <rrrr@rnet.com> wrote in message news:<wc9nb.1754$Vl4.545240113@twister2.starband.n et>...
> > He is referring to the top dead sensor switch on the bell housing, find it
> > unplug it then plug it back in it should start one time. When it is shut off
> > it will not start again until its replaced.
> > Ron K
> > "Tom Russell" <tomr@ix.netcom.com> wrote in message
> > news:83403696.0310262201.198eeb62@posting.google.c om...
> > > Hi:
> > >
> > > I've got a 1996 Jeep Cherokee. 4.0 with a standard transmission. I
> > > parked her a couple of nights ago and she wouldn't start up again. I
> > > checked for spark and got none. (Hopefully I'm doing that properly) I
> > > checked for and found no loose wires. I looked at the Distributor Cap
> > > and rotor. Both appear to be fine. They were both changed two weeks
> > > ago along with the new plugs and wires.
> > >
> > > My first instinct was the electronic control module. According to
> > > Jeep, this model does not have a module. Instead, it uses an onboard
> > > computer module.
> > > At almost $500, I'm not crazy about swapping that out unless I know
> > > its really at fault. For kicks, I put on a new coil. No change.
> > >
> > > I spoke to a mechanic who suggested a Transmission Sensor ( I think
> > > thats what he said...)Couldn't find reference to it in the Haynes
> > > manual I have.
> > >
> > > I'm about ready to have it pulled into the shop. Before I do, I
> > > thought I'd check to see if any of you folks had any ideas.
> > >
> > > Up till now (6.5 yearrs 185K miles) she has run flawlessly. I
> > > mentioned earlier that I had just changed the plugs, rotor, cap and
> > > wires. She ran well for a week or so. Then *poof*
> > >
> > > Any idea's would be appreciated.
> > >
> > > Thanks in advance.
> > >
> > > Tom


Mike Romain 10-28-2003 09:53 AM

Re: Help Please Jeep Cherokee won't start No Spark
 
The ground strap from the engine to firewall supply the power.

Mine went ratty and it acted like a dead CPS.

Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
88 Cherokee 235 BFG AT's

Tom Russell wrote:
>
> No luck. Sent it to a the shop. No luck there either. They say that
> there is no power getting to this switch or to the onboard computer.
> They are probing for loose wires etc.
>
> Damn
>
> TWR
>
> "Ron K" <rrrr@rnet.com> wrote in message news:<wc9nb.1754$Vl4.545240113@twister2.starband.n et>...
> > He is referring to the top dead sensor switch on the bell housing, find it
> > unplug it then plug it back in it should start one time. When it is shut off
> > it will not start again until its replaced.
> > Ron K
> > "Tom Russell" <tomr@ix.netcom.com> wrote in message
> > news:83403696.0310262201.198eeb62@posting.google.c om...
> > > Hi:
> > >
> > > I've got a 1996 Jeep Cherokee. 4.0 with a standard transmission. I
> > > parked her a couple of nights ago and she wouldn't start up again. I
> > > checked for spark and got none. (Hopefully I'm doing that properly) I
> > > checked for and found no loose wires. I looked at the Distributor Cap
> > > and rotor. Both appear to be fine. They were both changed two weeks
> > > ago along with the new plugs and wires.
> > >
> > > My first instinct was the electronic control module. According to
> > > Jeep, this model does not have a module. Instead, it uses an onboard
> > > computer module.
> > > At almost $500, I'm not crazy about swapping that out unless I know
> > > its really at fault. For kicks, I put on a new coil. No change.
> > >
> > > I spoke to a mechanic who suggested a Transmission Sensor ( I think
> > > thats what he said...)Couldn't find reference to it in the Haynes
> > > manual I have.
> > >
> > > I'm about ready to have it pulled into the shop. Before I do, I
> > > thought I'd check to see if any of you folks had any ideas.
> > >
> > > Up till now (6.5 yearrs 185K miles) she has run flawlessly. I
> > > mentioned earlier that I had just changed the plugs, rotor, cap and
> > > wires. She ran well for a week or so. Then *poof*
> > >
> > > Any idea's would be appreciated.
> > >
> > > Thanks in advance.
> > >
> > > Tom


Mike Romain 10-28-2003 09:54 AM

Re: Help Please Jeep Cherokee won't start No Spark
 
The ground strap from the engine to firewall supply the power.

Mine went ratty and it acted like a dead CPS.

Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
88 Cherokee 235 BFG AT's

Tom Russell wrote:
>
> No luck. Sent it to a the shop. No luck there either. They say that
> there is no power getting to this switch or to the onboard computer.
> They are probing for loose wires etc.
>
> Damn
>
> TWR
>
> "Ron K" <rrrr@rnet.com> wrote in message news:<wc9nb.1754$Vl4.545240113@twister2.starband.n et>...
> > He is referring to the top dead sensor switch on the bell housing, find it
> > unplug it then plug it back in it should start one time. When it is shut off
> > it will not start again until its replaced.
> > Ron K
> > "Tom Russell" <tomr@ix.netcom.com> wrote in message
> > news:83403696.0310262201.198eeb62@posting.google.c om...
> > > Hi:
> > >
> > > I've got a 1996 Jeep Cherokee. 4.0 with a standard transmission. I
> > > parked her a couple of nights ago and she wouldn't start up again. I
> > > checked for spark and got none. (Hopefully I'm doing that properly) I
> > > checked for and found no loose wires. I looked at the Distributor Cap
> > > and rotor. Both appear to be fine. They were both changed two weeks
> > > ago along with the new plugs and wires.
> > >
> > > My first instinct was the electronic control module. According to
> > > Jeep, this model does not have a module. Instead, it uses an onboard
> > > computer module.
> > > At almost $500, I'm not crazy about swapping that out unless I know
> > > its really at fault. For kicks, I put on a new coil. No change.
> > >
> > > I spoke to a mechanic who suggested a Transmission Sensor ( I think
> > > thats what he said...)Couldn't find reference to it in the Haynes
> > > manual I have.
> > >
> > > I'm about ready to have it pulled into the shop. Before I do, I
> > > thought I'd check to see if any of you folks had any ideas.
> > >
> > > Up till now (6.5 yearrs 185K miles) she has run flawlessly. I
> > > mentioned earlier that I had just changed the plugs, rotor, cap and
> > > wires. She ran well for a week or so. Then *poof*
> > >
> > > Any idea's would be appreciated.
> > >
> > > Thanks in advance.
> > >
> > > Tom


Mike Romain 10-28-2003 09:54 AM

Re: Help Please Jeep Cherokee won't start No Spark
 
The ground strap from the engine to firewall supply the power.

Mine went ratty and it acted like a dead CPS.

Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
88 Cherokee 235 BFG AT's

Tom Russell wrote:
>
> No luck. Sent it to a the shop. No luck there either. They say that
> there is no power getting to this switch or to the onboard computer.
> They are probing for loose wires etc.
>
> Damn
>
> TWR
>
> "Ron K" <rrrr@rnet.com> wrote in message news:<wc9nb.1754$Vl4.545240113@twister2.starband.n et>...
> > He is referring to the top dead sensor switch on the bell housing, find it
> > unplug it then plug it back in it should start one time. When it is shut off
> > it will not start again until its replaced.
> > Ron K
> > "Tom Russell" <tomr@ix.netcom.com> wrote in message
> > news:83403696.0310262201.198eeb62@posting.google.c om...
> > > Hi:
> > >
> > > I've got a 1996 Jeep Cherokee. 4.0 with a standard transmission. I
> > > parked her a couple of nights ago and she wouldn't start up again. I
> > > checked for spark and got none. (Hopefully I'm doing that properly) I
> > > checked for and found no loose wires. I looked at the Distributor Cap
> > > and rotor. Both appear to be fine. They were both changed two weeks
> > > ago along with the new plugs and wires.
> > >
> > > My first instinct was the electronic control module. According to
> > > Jeep, this model does not have a module. Instead, it uses an onboard
> > > computer module.
> > > At almost $500, I'm not crazy about swapping that out unless I know
> > > its really at fault. For kicks, I put on a new coil. No change.
> > >
> > > I spoke to a mechanic who suggested a Transmission Sensor ( I think
> > > thats what he said...)Couldn't find reference to it in the Haynes
> > > manual I have.
> > >
> > > I'm about ready to have it pulled into the shop. Before I do, I
> > > thought I'd check to see if any of you folks had any ideas.
> > >
> > > Up till now (6.5 yearrs 185K miles) she has run flawlessly. I
> > > mentioned earlier that I had just changed the plugs, rotor, cap and
> > > wires. She ran well for a week or so. Then *poof*
> > >
> > > Any idea's would be appreciated.
> > >
> > > Thanks in advance.
> > >
> > > Tom


Mike Romain 10-28-2003 09:54 AM

Re: Help Please Jeep Cherokee won't start No Spark
 
The ground strap from the engine to firewall supply the power.

Mine went ratty and it acted like a dead CPS.

Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
88 Cherokee 235 BFG AT's

Tom Russell wrote:
>
> No luck. Sent it to a the shop. No luck there either. They say that
> there is no power getting to this switch or to the onboard computer.
> They are probing for loose wires etc.
>
> Damn
>
> TWR
>
> "Ron K" <rrrr@rnet.com> wrote in message news:<wc9nb.1754$Vl4.545240113@twister2.starband.n et>...
> > He is referring to the top dead sensor switch on the bell housing, find it
> > unplug it then plug it back in it should start one time. When it is shut off
> > it will not start again until its replaced.
> > Ron K
> > "Tom Russell" <tomr@ix.netcom.com> wrote in message
> > news:83403696.0310262201.198eeb62@posting.google.c om...
> > > Hi:
> > >
> > > I've got a 1996 Jeep Cherokee. 4.0 with a standard transmission. I
> > > parked her a couple of nights ago and she wouldn't start up again. I
> > > checked for spark and got none. (Hopefully I'm doing that properly) I
> > > checked for and found no loose wires. I looked at the Distributor Cap
> > > and rotor. Both appear to be fine. They were both changed two weeks
> > > ago along with the new plugs and wires.
> > >
> > > My first instinct was the electronic control module. According to
> > > Jeep, this model does not have a module. Instead, it uses an onboard
> > > computer module.
> > > At almost $500, I'm not crazy about swapping that out unless I know
> > > its really at fault. For kicks, I put on a new coil. No change.
> > >
> > > I spoke to a mechanic who suggested a Transmission Sensor ( I think
> > > thats what he said...)Couldn't find reference to it in the Haynes
> > > manual I have.
> > >
> > > I'm about ready to have it pulled into the shop. Before I do, I
> > > thought I'd check to see if any of you folks had any ideas.
> > >
> > > Up till now (6.5 yearrs 185K miles) she has run flawlessly. I
> > > mentioned earlier that I had just changed the plugs, rotor, cap and
> > > wires. She ran well for a week or so. Then *poof*
> > >
> > > Any idea's would be appreciated.
> > >
> > > Thanks in advance.
> > >
> > > Tom


Bob Casanova 10-28-2003 05:19 PM

Re: Help Please Jeep Cherokee won't start No Spark
 
On 27 Oct 2003 17:42:33 -0800, the following appeared in
rec.autos.makers.jeep+willys, posted by tomr@ix.netcom.com
(Tom Russell):

"No power to the computer" usually beats the hell out of
"dead computer".

>No luck. Sent it to a the shop. No luck there either. They say that
>there is no power getting to this switch or to the onboard computer.
>They are probing for loose wires etc.
>
>Damn
>
>TWR
>
>"Ron K" <rrrr@rnet.com> wrote in message news:<wc9nb.1754$Vl4.545240113@twister2.starband.n et>...
>> He is referring to the top dead sensor switch on the bell housing, find it
>> unplug it then plug it back in it should start one time. When it is shut off
>> it will not start again until its replaced.
>> Ron K
>> "Tom Russell" <tomr@ix.netcom.com> wrote in message
>> news:83403696.0310262201.198eeb62@posting.google.c om...
>> > Hi:
>> >
>> > I've got a 1996 Jeep Cherokee. 4.0 with a standard transmission. I
>> > parked her a couple of nights ago and she wouldn't start up again. I
>> > checked for spark and got none. (Hopefully I'm doing that properly) I
>> > checked for and found no loose wires. I looked at the Distributor Cap
>> > and rotor. Both appear to be fine. They were both changed two weeks
>> > ago along with the new plugs and wires.
>> >
>> > My first instinct was the electronic control module. According to
>> > Jeep, this model does not have a module. Instead, it uses an onboard
>> > computer module.
>> > At almost $500, I'm not crazy about swapping that out unless I know
>> > its really at fault. For kicks, I put on a new coil. No change.
>> >
>> > I spoke to a mechanic who suggested a Transmission Sensor ( I think
>> > thats what he said...)Couldn't find reference to it in the Haynes
>> > manual I have.
>> >
>> > I'm about ready to have it pulled into the shop. Before I do, I
>> > thought I'd check to see if any of you folks had any ideas.
>> >
>> > Up till now (6.5 yearrs 185K miles) she has run flawlessly. I
>> > mentioned earlier that I had just changed the plugs, rotor, cap and
>> > wires. She ran well for a week or so. Then *poof*
>> >
>> > Any idea's would be appreciated.
>> >
>> > Thanks in advance.
>> >
>> > Tom


--

Bob C.

Reply to Bob-Casanova @ worldnet.att.net
(without the spaces, of course)

"The most exciting phrase to hear in science,
the one that heralds new discoveries, is not
'Eureka!' but 'That's funny...'"
- Isaac Asimov

Bob Casanova 10-28-2003 05:19 PM

Re: Help Please Jeep Cherokee won't start No Spark
 
On 27 Oct 2003 17:42:33 -0800, the following appeared in
rec.autos.makers.jeep+willys, posted by tomr@ix.netcom.com
(Tom Russell):

"No power to the computer" usually beats the hell out of
"dead computer".

>No luck. Sent it to a the shop. No luck there either. They say that
>there is no power getting to this switch or to the onboard computer.
>They are probing for loose wires etc.
>
>Damn
>
>TWR
>
>"Ron K" <rrrr@rnet.com> wrote in message news:<wc9nb.1754$Vl4.545240113@twister2.starband.n et>...
>> He is referring to the top dead sensor switch on the bell housing, find it
>> unplug it then plug it back in it should start one time. When it is shut off
>> it will not start again until its replaced.
>> Ron K
>> "Tom Russell" <tomr@ix.netcom.com> wrote in message
>> news:83403696.0310262201.198eeb62@posting.google.c om...
>> > Hi:
>> >
>> > I've got a 1996 Jeep Cherokee. 4.0 with a standard transmission. I
>> > parked her a couple of nights ago and she wouldn't start up again. I
>> > checked for spark and got none. (Hopefully I'm doing that properly) I
>> > checked for and found no loose wires. I looked at the Distributor Cap
>> > and rotor. Both appear to be fine. They were both changed two weeks
>> > ago along with the new plugs and wires.
>> >
>> > My first instinct was the electronic control module. According to
>> > Jeep, this model does not have a module. Instead, it uses an onboard
>> > computer module.
>> > At almost $500, I'm not crazy about swapping that out unless I know
>> > its really at fault. For kicks, I put on a new coil. No change.
>> >
>> > I spoke to a mechanic who suggested a Transmission Sensor ( I think
>> > thats what he said...)Couldn't find reference to it in the Haynes
>> > manual I have.
>> >
>> > I'm about ready to have it pulled into the shop. Before I do, I
>> > thought I'd check to see if any of you folks had any ideas.
>> >
>> > Up till now (6.5 yearrs 185K miles) she has run flawlessly. I
>> > mentioned earlier that I had just changed the plugs, rotor, cap and
>> > wires. She ran well for a week or so. Then *poof*
>> >
>> > Any idea's would be appreciated.
>> >
>> > Thanks in advance.
>> >
>> > Tom


--

Bob C.

Reply to Bob-Casanova @ worldnet.att.net
(without the spaces, of course)

"The most exciting phrase to hear in science,
the one that heralds new discoveries, is not
'Eureka!' but 'That's funny...'"
- Isaac Asimov

Bob Casanova 10-28-2003 05:19 PM

Re: Help Please Jeep Cherokee won't start No Spark
 
On 27 Oct 2003 17:42:33 -0800, the following appeared in
rec.autos.makers.jeep+willys, posted by tomr@ix.netcom.com
(Tom Russell):

"No power to the computer" usually beats the hell out of
"dead computer".

>No luck. Sent it to a the shop. No luck there either. They say that
>there is no power getting to this switch or to the onboard computer.
>They are probing for loose wires etc.
>
>Damn
>
>TWR
>
>"Ron K" <rrrr@rnet.com> wrote in message news:<wc9nb.1754$Vl4.545240113@twister2.starband.n et>...
>> He is referring to the top dead sensor switch on the bell housing, find it
>> unplug it then plug it back in it should start one time. When it is shut off
>> it will not start again until its replaced.
>> Ron K
>> "Tom Russell" <tomr@ix.netcom.com> wrote in message
>> news:83403696.0310262201.198eeb62@posting.google.c om...
>> > Hi:
>> >
>> > I've got a 1996 Jeep Cherokee. 4.0 with a standard transmission. I
>> > parked her a couple of nights ago and she wouldn't start up again. I
>> > checked for spark and got none. (Hopefully I'm doing that properly) I
>> > checked for and found no loose wires. I looked at the Distributor Cap
>> > and rotor. Both appear to be fine. They were both changed two weeks
>> > ago along with the new plugs and wires.
>> >
>> > My first instinct was the electronic control module. According to
>> > Jeep, this model does not have a module. Instead, it uses an onboard
>> > computer module.
>> > At almost $500, I'm not crazy about swapping that out unless I know
>> > its really at fault. For kicks, I put on a new coil. No change.
>> >
>> > I spoke to a mechanic who suggested a Transmission Sensor ( I think
>> > thats what he said...)Couldn't find reference to it in the Haynes
>> > manual I have.
>> >
>> > I'm about ready to have it pulled into the shop. Before I do, I
>> > thought I'd check to see if any of you folks had any ideas.
>> >
>> > Up till now (6.5 yearrs 185K miles) she has run flawlessly. I
>> > mentioned earlier that I had just changed the plugs, rotor, cap and
>> > wires. She ran well for a week or so. Then *poof*
>> >
>> > Any idea's would be appreciated.
>> >
>> > Thanks in advance.
>> >
>> > Tom


--

Bob C.

Reply to Bob-Casanova @ worldnet.att.net
(without the spaces, of course)

"The most exciting phrase to hear in science,
the one that heralds new discoveries, is not
'Eureka!' but 'That's funny...'"
- Isaac Asimov

MikeG 11-17-2003 06:06 PM

Re: Help Please Jeep Cherokee won't start No Spark
 
I remember some time ago, I had a similar problem on a 97 XJ. What happened
my kid left the interior light on and it drained the batter. The onboard
computer lost in program.
I had to start it like a old carburator vehicle, pumping the gas, and reving
it up to keep it running for about 3 or 4 minutes untill the ROM downloaded
the program back to the computer - which controls the fuel, etc.

Jeep told me this. I esentially re-booted my car.

Odd thing. I've completely drainded my battery in the past, and didn't have
this happen.

So try charing the battery way up, hop in, pump the gas a few times, hold
the pedal down turn it over, if it sputters and tries, this may be the
problem. Keep at it, mine stalled many times trying to keep it running. I
ended up having to vary the pedal the entire time.

Mike


"Tom Russell" <tomr@ix.netcom.com> wrote in message
news:83403696.0310271742.23ef9ba8@posting.google.c om...
> No luck. Sent it to a the shop. No luck there either. They say that
> there is no power getting to this switch or to the onboard computer.
> They are probing for loose wires etc.
>
> Damn
>
> TWR
>
> "Ron K" <rrrr@rnet.com> wrote in message

news:<wc9nb.1754$Vl4.545240113@twister2.starband.n et>...
> > He is referring to the top dead sensor switch on the bell housing, find

it
> > unplug it then plug it back in it should start one time. When it is shut

off
> > it will not start again until its replaced.
> > Ron K
> > "Tom Russell" <tomr@ix.netcom.com> wrote in message
> > news:83403696.0310262201.198eeb62@posting.google.c om...
> > > Hi:
> > >
> > > I've got a 1996 Jeep Cherokee. 4.0 with a standard transmission. I
> > > parked her a couple of nights ago and she wouldn't start up again. I
> > > checked for spark and got none. (Hopefully I'm doing that properly) I
> > > checked for and found no loose wires. I looked at the Distributor Cap
> > > and rotor. Both appear to be fine. They were both changed two weeks
> > > ago along with the new plugs and wires.
> > >
> > > My first instinct was the electronic control module. According to
> > > Jeep, this model does not have a module. Instead, it uses an onboard
> > > computer module.
> > > At almost $500, I'm not crazy about swapping that out unless I know
> > > its really at fault. For kicks, I put on a new coil. No change.
> > >
> > > I spoke to a mechanic who suggested a Transmission Sensor ( I think
> > > thats what he said...)Couldn't find reference to it in the Haynes
> > > manual I have.
> > >
> > > I'm about ready to have it pulled into the shop. Before I do, I
> > > thought I'd check to see if any of you folks had any ideas.
> > >
> > > Up till now (6.5 yearrs 185K miles) she has run flawlessly. I
> > > mentioned earlier that I had just changed the plugs, rotor, cap and
> > > wires. She ran well for a week or so. Then *poof*
> > >
> > > Any idea's would be appreciated.
> > >
> > > Thanks in advance.
> > >
> > > Tom




MikeG 11-17-2003 06:06 PM

Re: Help Please Jeep Cherokee won't start No Spark
 
I remember some time ago, I had a similar problem on a 97 XJ. What happened
my kid left the interior light on and it drained the batter. The onboard
computer lost in program.
I had to start it like a old carburator vehicle, pumping the gas, and reving
it up to keep it running for about 3 or 4 minutes untill the ROM downloaded
the program back to the computer - which controls the fuel, etc.

Jeep told me this. I esentially re-booted my car.

Odd thing. I've completely drainded my battery in the past, and didn't have
this happen.

So try charing the battery way up, hop in, pump the gas a few times, hold
the pedal down turn it over, if it sputters and tries, this may be the
problem. Keep at it, mine stalled many times trying to keep it running. I
ended up having to vary the pedal the entire time.

Mike


"Tom Russell" <tomr@ix.netcom.com> wrote in message
news:83403696.0310271742.23ef9ba8@posting.google.c om...
> No luck. Sent it to a the shop. No luck there either. They say that
> there is no power getting to this switch or to the onboard computer.
> They are probing for loose wires etc.
>
> Damn
>
> TWR
>
> "Ron K" <rrrr@rnet.com> wrote in message

news:<wc9nb.1754$Vl4.545240113@twister2.starband.n et>...
> > He is referring to the top dead sensor switch on the bell housing, find

it
> > unplug it then plug it back in it should start one time. When it is shut

off
> > it will not start again until its replaced.
> > Ron K
> > "Tom Russell" <tomr@ix.netcom.com> wrote in message
> > news:83403696.0310262201.198eeb62@posting.google.c om...
> > > Hi:
> > >
> > > I've got a 1996 Jeep Cherokee. 4.0 with a standard transmission. I
> > > parked her a couple of nights ago and she wouldn't start up again. I
> > > checked for spark and got none. (Hopefully I'm doing that properly) I
> > > checked for and found no loose wires. I looked at the Distributor Cap
> > > and rotor. Both appear to be fine. They were both changed two weeks
> > > ago along with the new plugs and wires.
> > >
> > > My first instinct was the electronic control module. According to
> > > Jeep, this model does not have a module. Instead, it uses an onboard
> > > computer module.
> > > At almost $500, I'm not crazy about swapping that out unless I know
> > > its really at fault. For kicks, I put on a new coil. No change.
> > >
> > > I spoke to a mechanic who suggested a Transmission Sensor ( I think
> > > thats what he said...)Couldn't find reference to it in the Haynes
> > > manual I have.
> > >
> > > I'm about ready to have it pulled into the shop. Before I do, I
> > > thought I'd check to see if any of you folks had any ideas.
> > >
> > > Up till now (6.5 yearrs 185K miles) she has run flawlessly. I
> > > mentioned earlier that I had just changed the plugs, rotor, cap and
> > > wires. She ran well for a week or so. Then *poof*
> > >
> > > Any idea's would be appreciated.
> > >
> > > Thanks in advance.
> > >
> > > Tom




MikeG 11-17-2003 06:06 PM

Re: Help Please Jeep Cherokee won't start No Spark
 
I remember some time ago, I had a similar problem on a 97 XJ. What happened
my kid left the interior light on and it drained the batter. The onboard
computer lost in program.
I had to start it like a old carburator vehicle, pumping the gas, and reving
it up to keep it running for about 3 or 4 minutes untill the ROM downloaded
the program back to the computer - which controls the fuel, etc.

Jeep told me this. I esentially re-booted my car.

Odd thing. I've completely drainded my battery in the past, and didn't have
this happen.

So try charing the battery way up, hop in, pump the gas a few times, hold
the pedal down turn it over, if it sputters and tries, this may be the
problem. Keep at it, mine stalled many times trying to keep it running. I
ended up having to vary the pedal the entire time.

Mike


"Tom Russell" <tomr@ix.netcom.com> wrote in message
news:83403696.0310271742.23ef9ba8@posting.google.c om...
> No luck. Sent it to a the shop. No luck there either. They say that
> there is no power getting to this switch or to the onboard computer.
> They are probing for loose wires etc.
>
> Damn
>
> TWR
>
> "Ron K" <rrrr@rnet.com> wrote in message

news:<wc9nb.1754$Vl4.545240113@twister2.starband.n et>...
> > He is referring to the top dead sensor switch on the bell housing, find

it
> > unplug it then plug it back in it should start one time. When it is shut

off
> > it will not start again until its replaced.
> > Ron K
> > "Tom Russell" <tomr@ix.netcom.com> wrote in message
> > news:83403696.0310262201.198eeb62@posting.google.c om...
> > > Hi:
> > >
> > > I've got a 1996 Jeep Cherokee. 4.0 with a standard transmission. I
> > > parked her a couple of nights ago and she wouldn't start up again. I
> > > checked for spark and got none. (Hopefully I'm doing that properly) I
> > > checked for and found no loose wires. I looked at the Distributor Cap
> > > and rotor. Both appear to be fine. They were both changed two weeks
> > > ago along with the new plugs and wires.
> > >
> > > My first instinct was the electronic control module. According to
> > > Jeep, this model does not have a module. Instead, it uses an onboard
> > > computer module.
> > > At almost $500, I'm not crazy about swapping that out unless I know
> > > its really at fault. For kicks, I put on a new coil. No change.
> > >
> > > I spoke to a mechanic who suggested a Transmission Sensor ( I think
> > > thats what he said...)Couldn't find reference to it in the Haynes
> > > manual I have.
> > >
> > > I'm about ready to have it pulled into the shop. Before I do, I
> > > thought I'd check to see if any of you folks had any ideas.
> > >
> > > Up till now (6.5 yearrs 185K miles) she has run flawlessly. I
> > > mentioned earlier that I had just changed the plugs, rotor, cap and
> > > wires. She ran well for a week or so. Then *poof*
> > >
> > > Any idea's would be appreciated.
> > >
> > > Thanks in advance.
> > >
> > > Tom




Kevin in San Diego 11-17-2003 09:42 PM

Re: Help Please Jeep Cherokee won't start No Spark
 
Its always the CPS when there is no spark. Just replace it. Even it it isnt
the problem its probably a good idea.
KH

"MikeG" <boo@hoo.com> wrote in message
news:vril0ot95rt1e4@corp.supernews.com...
> I remember some time ago, I had a similar problem on a 97 XJ. What

happened
> my kid left the interior light on and it drained the batter. The onboard
> computer lost in program.
> I had to start it like a old carburator vehicle, pumping the gas, and

reving
> it up to keep it running for about 3 or 4 minutes untill the ROM

downloaded
> the program back to the computer - which controls the fuel, etc.
>
> Jeep told me this. I esentially re-booted my car.
>
> Odd thing. I've completely drainded my battery in the past, and didn't

have
> this happen.
>
> So try charing the battery way up, hop in, pump the gas a few times, hold
> the pedal down turn it over, if it sputters and tries, this may be the
> problem. Keep at it, mine stalled many times trying to keep it running.

I
> ended up having to vary the pedal the entire time.
>
> Mike
>
>
> "Tom Russell" <tomr@ix.netcom.com> wrote in message
> news:83403696.0310271742.23ef9ba8@posting.google.c om...
> > No luck. Sent it to a the shop. No luck there either. They say that
> > there is no power getting to this switch or to the onboard computer.
> > They are probing for loose wires etc.
> >
> > Damn
> >
> > TWR
> >
> > "Ron K" <rrrr@rnet.com> wrote in message

> news:<wc9nb.1754$Vl4.545240113@twister2.starband.n et>...
> > > He is referring to the top dead sensor switch on the bell housing,

find
> it
> > > unplug it then plug it back in it should start one time. When it is

shut
> off
> > > it will not start again until its replaced.
> > > Ron K
> > > "Tom Russell" <tomr@ix.netcom.com> wrote in message
> > > news:83403696.0310262201.198eeb62@posting.google.c om...
> > > > Hi:
> > > >
> > > > I've got a 1996 Jeep Cherokee. 4.0 with a standard transmission. I
> > > > parked her a couple of nights ago and she wouldn't start up again. I
> > > > checked for spark and got none. (Hopefully I'm doing that properly)

I
> > > > checked for and found no loose wires. I looked at the Distributor

Cap
> > > > and rotor. Both appear to be fine. They were both changed two weeks
> > > > ago along with the new plugs and wires.
> > > >
> > > > My first instinct was the electronic control module. According to
> > > > Jeep, this model does not have a module. Instead, it uses an onboard
> > > > computer module.
> > > > At almost $500, I'm not crazy about swapping that out unless I know
> > > > its really at fault. For kicks, I put on a new coil. No change.
> > > >
> > > > I spoke to a mechanic who suggested a Transmission Sensor ( I think
> > > > thats what he said...)Couldn't find reference to it in the Haynes
> > > > manual I have.
> > > >
> > > > I'm about ready to have it pulled into the shop. Before I do, I
> > > > thought I'd check to see if any of you folks had any ideas.
> > > >
> > > > Up till now (6.5 yearrs 185K miles) she has run flawlessly. I
> > > > mentioned earlier that I had just changed the plugs, rotor, cap and
> > > > wires. She ran well for a week or so. Then *poof*
> > > >
> > > > Any idea's would be appreciated.
> > > >
> > > > Thanks in advance.
> > > >
> > > > Tom

>
>




Kevin in San Diego 11-17-2003 09:42 PM

Re: Help Please Jeep Cherokee won't start No Spark
 
Its always the CPS when there is no spark. Just replace it. Even it it isnt
the problem its probably a good idea.
KH

"MikeG" <boo@hoo.com> wrote in message
news:vril0ot95rt1e4@corp.supernews.com...
> I remember some time ago, I had a similar problem on a 97 XJ. What

happened
> my kid left the interior light on and it drained the batter. The onboard
> computer lost in program.
> I had to start it like a old carburator vehicle, pumping the gas, and

reving
> it up to keep it running for about 3 or 4 minutes untill the ROM

downloaded
> the program back to the computer - which controls the fuel, etc.
>
> Jeep told me this. I esentially re-booted my car.
>
> Odd thing. I've completely drainded my battery in the past, and didn't

have
> this happen.
>
> So try charing the battery way up, hop in, pump the gas a few times, hold
> the pedal down turn it over, if it sputters and tries, this may be the
> problem. Keep at it, mine stalled many times trying to keep it running.

I
> ended up having to vary the pedal the entire time.
>
> Mike
>
>
> "Tom Russell" <tomr@ix.netcom.com> wrote in message
> news:83403696.0310271742.23ef9ba8@posting.google.c om...
> > No luck. Sent it to a the shop. No luck there either. They say that
> > there is no power getting to this switch or to the onboard computer.
> > They are probing for loose wires etc.
> >
> > Damn
> >
> > TWR
> >
> > "Ron K" <rrrr@rnet.com> wrote in message

> news:<wc9nb.1754$Vl4.545240113@twister2.starband.n et>...
> > > He is referring to the top dead sensor switch on the bell housing,

find
> it
> > > unplug it then plug it back in it should start one time. When it is

shut
> off
> > > it will not start again until its replaced.
> > > Ron K
> > > "Tom Russell" <tomr@ix.netcom.com> wrote in message
> > > news:83403696.0310262201.198eeb62@posting.google.c om...
> > > > Hi:
> > > >
> > > > I've got a 1996 Jeep Cherokee. 4.0 with a standard transmission. I
> > > > parked her a couple of nights ago and she wouldn't start up again. I
> > > > checked for spark and got none. (Hopefully I'm doing that properly)

I
> > > > checked for and found no loose wires. I looked at the Distributor

Cap
> > > > and rotor. Both appear to be fine. They were both changed two weeks
> > > > ago along with the new plugs and wires.
> > > >
> > > > My first instinct was the electronic control module. According to
> > > > Jeep, this model does not have a module. Instead, it uses an onboard
> > > > computer module.
> > > > At almost $500, I'm not crazy about swapping that out unless I know
> > > > its really at fault. For kicks, I put on a new coil. No change.
> > > >
> > > > I spoke to a mechanic who suggested a Transmission Sensor ( I think
> > > > thats what he said...)Couldn't find reference to it in the Haynes
> > > > manual I have.
> > > >
> > > > I'm about ready to have it pulled into the shop. Before I do, I
> > > > thought I'd check to see if any of you folks had any ideas.
> > > >
> > > > Up till now (6.5 yearrs 185K miles) she has run flawlessly. I
> > > > mentioned earlier that I had just changed the plugs, rotor, cap and
> > > > wires. She ran well for a week or so. Then *poof*
> > > >
> > > > Any idea's would be appreciated.
> > > >
> > > > Thanks in advance.
> > > >
> > > > Tom

>
>




Kevin in San Diego 11-17-2003 09:42 PM

Re: Help Please Jeep Cherokee won't start No Spark
 
Its always the CPS when there is no spark. Just replace it. Even it it isnt
the problem its probably a good idea.
KH

"MikeG" <boo@hoo.com> wrote in message
news:vril0ot95rt1e4@corp.supernews.com...
> I remember some time ago, I had a similar problem on a 97 XJ. What

happened
> my kid left the interior light on and it drained the batter. The onboard
> computer lost in program.
> I had to start it like a old carburator vehicle, pumping the gas, and

reving
> it up to keep it running for about 3 or 4 minutes untill the ROM

downloaded
> the program back to the computer - which controls the fuel, etc.
>
> Jeep told me this. I esentially re-booted my car.
>
> Odd thing. I've completely drainded my battery in the past, and didn't

have
> this happen.
>
> So try charing the battery way up, hop in, pump the gas a few times, hold
> the pedal down turn it over, if it sputters and tries, this may be the
> problem. Keep at it, mine stalled many times trying to keep it running.

I
> ended up having to vary the pedal the entire time.
>
> Mike
>
>
> "Tom Russell" <tomr@ix.netcom.com> wrote in message
> news:83403696.0310271742.23ef9ba8@posting.google.c om...
> > No luck. Sent it to a the shop. No luck there either. They say that
> > there is no power getting to this switch or to the onboard computer.
> > They are probing for loose wires etc.
> >
> > Damn
> >
> > TWR
> >
> > "Ron K" <rrrr@rnet.com> wrote in message

> news:<wc9nb.1754$Vl4.545240113@twister2.starband.n et>...
> > > He is referring to the top dead sensor switch on the bell housing,

find
> it
> > > unplug it then plug it back in it should start one time. When it is

shut
> off
> > > it will not start again until its replaced.
> > > Ron K
> > > "Tom Russell" <tomr@ix.netcom.com> wrote in message
> > > news:83403696.0310262201.198eeb62@posting.google.c om...
> > > > Hi:
> > > >
> > > > I've got a 1996 Jeep Cherokee. 4.0 with a standard transmission. I
> > > > parked her a couple of nights ago and she wouldn't start up again. I
> > > > checked for spark and got none. (Hopefully I'm doing that properly)

I
> > > > checked for and found no loose wires. I looked at the Distributor

Cap
> > > > and rotor. Both appear to be fine. They were both changed two weeks
> > > > ago along with the new plugs and wires.
> > > >
> > > > My first instinct was the electronic control module. According to
> > > > Jeep, this model does not have a module. Instead, it uses an onboard
> > > > computer module.
> > > > At almost $500, I'm not crazy about swapping that out unless I know
> > > > its really at fault. For kicks, I put on a new coil. No change.
> > > >
> > > > I spoke to a mechanic who suggested a Transmission Sensor ( I think
> > > > thats what he said...)Couldn't find reference to it in the Haynes
> > > > manual I have.
> > > >
> > > > I'm about ready to have it pulled into the shop. Before I do, I
> > > > thought I'd check to see if any of you folks had any ideas.
> > > >
> > > > Up till now (6.5 yearrs 185K miles) she has run flawlessly. I
> > > > mentioned earlier that I had just changed the plugs, rotor, cap and
> > > > wires. She ran well for a week or so. Then *poof*
> > > >
> > > > Any idea's would be appreciated.
> > > >
> > > > Thanks in advance.
> > > >
> > > > Tom

>
>




Mike Romain 11-18-2003 03:13 PM

Re: Help Please Jeep Cherokee won't start No Spark
 
Ya right....

I changed my CPS and the prick stalled again 10 feet later.

Mine was an almost dead ground strap from the engine head to the
firewall cutting out the spark.

Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
88 Cherokee 235 BFG AT's

Kevin in San Diego wrote:
>
> Its always the CPS when there is no spark. Just replace it. Even it it isnt
> the problem its probably a good idea.
> KH
>
> "MikeG" <boo@hoo.com> wrote in message
> news:vril0ot95rt1e4@corp.supernews.com...
> > I remember some time ago, I had a similar problem on a 97 XJ. What

> happened
> > my kid left the interior light on and it drained the batter. The onboard
> > computer lost in program.
> > I had to start it like a old carburator vehicle, pumping the gas, and

> reving
> > it up to keep it running for about 3 or 4 minutes untill the ROM

> downloaded
> > the program back to the computer - which controls the fuel, etc.
> >
> > Jeep told me this. I esentially re-booted my car.
> >
> > Odd thing. I've completely drainded my battery in the past, and didn't

> have
> > this happen.
> >
> > So try charing the battery way up, hop in, pump the gas a few times, hold
> > the pedal down turn it over, if it sputters and tries, this may be the
> > problem. Keep at it, mine stalled many times trying to keep it running.

> I
> > ended up having to vary the pedal the entire time.
> >
> > Mike
> >
> >
> > "Tom Russell" <tomr@ix.netcom.com> wrote in message
> > news:83403696.0310271742.23ef9ba8@posting.google.c om...
> > > No luck. Sent it to a the shop. No luck there either. They say that
> > > there is no power getting to this switch or to the onboard computer.
> > > They are probing for loose wires etc.
> > >
> > > Damn
> > >
> > > TWR
> > >
> > > "Ron K" <rrrr@rnet.com> wrote in message

> > news:<wc9nb.1754$Vl4.545240113@twister2.starband.n et>...
> > > > He is referring to the top dead sensor switch on the bell housing,

> find
> > it
> > > > unplug it then plug it back in it should start one time. When it is

> shut
> > off
> > > > it will not start again until its replaced.
> > > > Ron K
> > > > "Tom Russell" <tomr@ix.netcom.com> wrote in message
> > > > news:83403696.0310262201.198eeb62@posting.google.c om...
> > > > > Hi:
> > > > >
> > > > > I've got a 1996 Jeep Cherokee. 4.0 with a standard transmission. I
> > > > > parked her a couple of nights ago and she wouldn't start up again. I
> > > > > checked for spark and got none. (Hopefully I'm doing that properly)

> I
> > > > > checked for and found no loose wires. I looked at the Distributor

> Cap
> > > > > and rotor. Both appear to be fine. They were both changed two weeks
> > > > > ago along with the new plugs and wires.
> > > > >
> > > > > My first instinct was the electronic control module. According to
> > > > > Jeep, this model does not have a module. Instead, it uses an onboard
> > > > > computer module.
> > > > > At almost $500, I'm not crazy about swapping that out unless I know
> > > > > its really at fault. For kicks, I put on a new coil. No change.
> > > > >
> > > > > I spoke to a mechanic who suggested a Transmission Sensor ( I think
> > > > > thats what he said...)Couldn't find reference to it in the Haynes
> > > > > manual I have.
> > > > >
> > > > > I'm about ready to have it pulled into the shop. Before I do, I
> > > > > thought I'd check to see if any of you folks had any ideas.
> > > > >
> > > > > Up till now (6.5 yearrs 185K miles) she has run flawlessly. I
> > > > > mentioned earlier that I had just changed the plugs, rotor, cap and
> > > > > wires. She ran well for a week or so. Then *poof*
> > > > >
> > > > > Any idea's would be appreciated.
> > > > >
> > > > > Thanks in advance.
> > > > >
> > > > > Tom

> >
> >


Mike Romain 11-18-2003 03:13 PM

Re: Help Please Jeep Cherokee won't start No Spark
 
Ya right....

I changed my CPS and the prick stalled again 10 feet later.

Mine was an almost dead ground strap from the engine head to the
firewall cutting out the spark.

Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
88 Cherokee 235 BFG AT's

Kevin in San Diego wrote:
>
> Its always the CPS when there is no spark. Just replace it. Even it it isnt
> the problem its probably a good idea.
> KH
>
> "MikeG" <boo@hoo.com> wrote in message
> news:vril0ot95rt1e4@corp.supernews.com...
> > I remember some time ago, I had a similar problem on a 97 XJ. What

> happened
> > my kid left the interior light on and it drained the batter. The onboard
> > computer lost in program.
> > I had to start it like a old carburator vehicle, pumping the gas, and

> reving
> > it up to keep it running for about 3 or 4 minutes untill the ROM

> downloaded
> > the program back to the computer - which controls the fuel, etc.
> >
> > Jeep told me this. I esentially re-booted my car.
> >
> > Odd thing. I've completely drainded my battery in the past, and didn't

> have
> > this happen.
> >
> > So try charing the battery way up, hop in, pump the gas a few times, hold
> > the pedal down turn it over, if it sputters and tries, this may be the
> > problem. Keep at it, mine stalled many times trying to keep it running.

> I
> > ended up having to vary the pedal the entire time.
> >
> > Mike
> >
> >
> > "Tom Russell" <tomr@ix.netcom.com> wrote in message
> > news:83403696.0310271742.23ef9ba8@posting.google.c om...
> > > No luck. Sent it to a the shop. No luck there either. They say that
> > > there is no power getting to this switch or to the onboard computer.
> > > They are probing for loose wires etc.
> > >
> > > Damn
> > >
> > > TWR
> > >
> > > "Ron K" <rrrr@rnet.com> wrote in message

> > news:<wc9nb.1754$Vl4.545240113@twister2.starband.n et>...
> > > > He is referring to the top dead sensor switch on the bell housing,

> find
> > it
> > > > unplug it then plug it back in it should start one time. When it is

> shut
> > off
> > > > it will not start again until its replaced.
> > > > Ron K
> > > > "Tom Russell" <tomr@ix.netcom.com> wrote in message
> > > > news:83403696.0310262201.198eeb62@posting.google.c om...
> > > > > Hi:
> > > > >
> > > > > I've got a 1996 Jeep Cherokee. 4.0 with a standard transmission. I
> > > > > parked her a couple of nights ago and she wouldn't start up again. I
> > > > > checked for spark and got none. (Hopefully I'm doing that properly)

> I
> > > > > checked for and found no loose wires. I looked at the Distributor

> Cap
> > > > > and rotor. Both appear to be fine. They were both changed two weeks
> > > > > ago along with the new plugs and wires.
> > > > >
> > > > > My first instinct was the electronic control module. According to
> > > > > Jeep, this model does not have a module. Instead, it uses an onboard
> > > > > computer module.
> > > > > At almost $500, I'm not crazy about swapping that out unless I know
> > > > > its really at fault. For kicks, I put on a new coil. No change.
> > > > >
> > > > > I spoke to a mechanic who suggested a Transmission Sensor ( I think
> > > > > thats what he said...)Couldn't find reference to it in the Haynes
> > > > > manual I have.
> > > > >
> > > > > I'm about ready to have it pulled into the shop. Before I do, I
> > > > > thought I'd check to see if any of you folks had any ideas.
> > > > >
> > > > > Up till now (6.5 yearrs 185K miles) she has run flawlessly. I
> > > > > mentioned earlier that I had just changed the plugs, rotor, cap and
> > > > > wires. She ran well for a week or so. Then *poof*
> > > > >
> > > > > Any idea's would be appreciated.
> > > > >
> > > > > Thanks in advance.
> > > > >
> > > > > Tom

> >
> >


Mike Romain 11-18-2003 03:13 PM

Re: Help Please Jeep Cherokee won't start No Spark
 
Ya right....

I changed my CPS and the prick stalled again 10 feet later.

Mine was an almost dead ground strap from the engine head to the
firewall cutting out the spark.

Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
88 Cherokee 235 BFG AT's

Kevin in San Diego wrote:
>
> Its always the CPS when there is no spark. Just replace it. Even it it isnt
> the problem its probably a good idea.
> KH
>
> "MikeG" <boo@hoo.com> wrote in message
> news:vril0ot95rt1e4@corp.supernews.com...
> > I remember some time ago, I had a similar problem on a 97 XJ. What

> happened
> > my kid left the interior light on and it drained the batter. The onboard
> > computer lost in program.
> > I had to start it like a old carburator vehicle, pumping the gas, and

> reving
> > it up to keep it running for about 3 or 4 minutes untill the ROM

> downloaded
> > the program back to the computer - which controls the fuel, etc.
> >
> > Jeep told me this. I esentially re-booted my car.
> >
> > Odd thing. I've completely drainded my battery in the past, and didn't

> have
> > this happen.
> >
> > So try charing the battery way up, hop in, pump the gas a few times, hold
> > the pedal down turn it over, if it sputters and tries, this may be the
> > problem. Keep at it, mine stalled many times trying to keep it running.

> I
> > ended up having to vary the pedal the entire time.
> >
> > Mike
> >
> >
> > "Tom Russell" <tomr@ix.netcom.com> wrote in message
> > news:83403696.0310271742.23ef9ba8@posting.google.c om...
> > > No luck. Sent it to a the shop. No luck there either. They say that
> > > there is no power getting to this switch or to the onboard computer.
> > > They are probing for loose wires etc.
> > >
> > > Damn
> > >
> > > TWR
> > >
> > > "Ron K" <rrrr@rnet.com> wrote in message

> > news:<wc9nb.1754$Vl4.545240113@twister2.starband.n et>...
> > > > He is referring to the top dead sensor switch on the bell housing,

> find
> > it
> > > > unplug it then plug it back in it should start one time. When it is

> shut
> > off
> > > > it will not start again until its replaced.
> > > > Ron K
> > > > "Tom Russell" <tomr@ix.netcom.com> wrote in message
> > > > news:83403696.0310262201.198eeb62@posting.google.c om...
> > > > > Hi:
> > > > >
> > > > > I've got a 1996 Jeep Cherokee. 4.0 with a standard transmission. I
> > > > > parked her a couple of nights ago and she wouldn't start up again. I
> > > > > checked for spark and got none. (Hopefully I'm doing that properly)

> I
> > > > > checked for and found no loose wires. I looked at the Distributor

> Cap
> > > > > and rotor. Both appear to be fine. They were both changed two weeks
> > > > > ago along with the new plugs and wires.
> > > > >
> > > > > My first instinct was the electronic control module. According to
> > > > > Jeep, this model does not have a module. Instead, it uses an onboard
> > > > > computer module.
> > > > > At almost $500, I'm not crazy about swapping that out unless I know
> > > > > its really at fault. For kicks, I put on a new coil. No change.
> > > > >
> > > > > I spoke to a mechanic who suggested a Transmission Sensor ( I think
> > > > > thats what he said...)Couldn't find reference to it in the Haynes
> > > > > manual I have.
> > > > >
> > > > > I'm about ready to have it pulled into the shop. Before I do, I
> > > > > thought I'd check to see if any of you folks had any ideas.
> > > > >
> > > > > Up till now (6.5 yearrs 185K miles) she has run flawlessly. I
> > > > > mentioned earlier that I had just changed the plugs, rotor, cap and
> > > > > wires. She ran well for a week or so. Then *poof*
> > > > >
> > > > > Any idea's would be appreciated.
> > > > >
> > > > > Thanks in advance.
> > > > >
> > > > > Tom

> >
> >


DougW 11-18-2003 06:07 PM

Re: Help Please Jeep Cherokee won't start No Spark
 
Mike Romain did pass the time by typing:
> Ya right....
>
> I changed my CPS and the prick stalled again 10 feet later.
>
> Mine was an almost dead ground strap from the engine head to the
> firewall cutting out the spark.


Yep. I rilly should put a diagnosics page up that
says

Step 1) Run a jumper cable between the engine and a good frame ground
Step 2) Clean the connectors
Step 3) ...

Those dang braided ground strap causes all sorts of problems.



DougW 11-18-2003 06:07 PM

Re: Help Please Jeep Cherokee won't start No Spark
 
Mike Romain did pass the time by typing:
> Ya right....
>
> I changed my CPS and the prick stalled again 10 feet later.
>
> Mine was an almost dead ground strap from the engine head to the
> firewall cutting out the spark.


Yep. I rilly should put a diagnosics page up that
says

Step 1) Run a jumper cable between the engine and a good frame ground
Step 2) Clean the connectors
Step 3) ...

Those dang braided ground strap causes all sorts of problems.



DougW 11-18-2003 06:07 PM

Re: Help Please Jeep Cherokee won't start No Spark
 
Mike Romain did pass the time by typing:
> Ya right....
>
> I changed my CPS and the prick stalled again 10 feet later.
>
> Mine was an almost dead ground strap from the engine head to the
> firewall cutting out the spark.


Yep. I rilly should put a diagnosics page up that
says

Step 1) Run a jumper cable between the engine and a good frame ground
Step 2) Clean the connectors
Step 3) ...

Those dang braided ground strap causes all sorts of problems.



Kevin in San Diego 11-18-2003 06:47 PM

Re: Help Please Jeep Cherokee won't start No Spark
 
LOL why did I know Mike was gonna say the ground strap.
KH

"DougW" <post.replies@invalid.address> wrote in message
news:fDxub.1862$3z5.1857@okepread01...
> Mike Romain did pass the time by typing:
> > Ya right....
> >
> > I changed my CPS and the prick stalled again 10 feet later.
> >
> > Mine was an almost dead ground strap from the engine head to the
> > firewall cutting out the spark.

>
> Yep. I rilly should put a diagnosics page up that
> says
>
> Step 1) Run a jumper cable between the engine and a good frame ground
> Step 2) Clean the connectors
> Step 3) ...
>
> Those dang braided ground strap causes all sorts of problems.
>
>




Kevin in San Diego 11-18-2003 06:47 PM

Re: Help Please Jeep Cherokee won't start No Spark
 
LOL why did I know Mike was gonna say the ground strap.
KH

"DougW" <post.replies@invalid.address> wrote in message
news:fDxub.1862$3z5.1857@okepread01...
> Mike Romain did pass the time by typing:
> > Ya right....
> >
> > I changed my CPS and the prick stalled again 10 feet later.
> >
> > Mine was an almost dead ground strap from the engine head to the
> > firewall cutting out the spark.

>
> Yep. I rilly should put a diagnosics page up that
> says
>
> Step 1) Run a jumper cable between the engine and a good frame ground
> Step 2) Clean the connectors
> Step 3) ...
>
> Those dang braided ground strap causes all sorts of problems.
>
>




Kevin in San Diego 11-18-2003 06:47 PM

Re: Help Please Jeep Cherokee won't start No Spark
 
LOL why did I know Mike was gonna say the ground strap.
KH

"DougW" <post.replies@invalid.address> wrote in message
news:fDxub.1862$3z5.1857@okepread01...
> Mike Romain did pass the time by typing:
> > Ya right....
> >
> > I changed my CPS and the prick stalled again 10 feet later.
> >
> > Mine was an almost dead ground strap from the engine head to the
> > firewall cutting out the spark.

>
> Yep. I rilly should put a diagnosics page up that
> says
>
> Step 1) Run a jumper cable between the engine and a good frame ground
> Step 2) Clean the connectors
> Step 3) ...
>
> Those dang braided ground strap causes all sorts of problems.
>
>





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