Re: 94 Grand Cherokee 5.2L V8. .. Intermittant stalling
 

dansexton@email.com wrote:
> On Mar 19, 7:27 am, Mike Romain <roma...@sympatico.ca> wrote:
>> I would go and open the gas cap right after it dies to see it if then
>> will start. If so, I would suspect a dirty air filter on the gas tank
>> vent. I don't know if the GC's can be changed or if they sucker you for
>> a whole canister for the $2.00 filter.
>>
>> Mike
>> 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
>> 88 Cherokee 235 BFG AT's
>> Canadian Off Road Trips Photos: Non members can still view!
>> Jan/06http://www.imagestation.com/album/pictures.html?id=2115147590
>> (More Off Road album links at bottom of the view page)
>>
>>
>>
>> mpdsvil...@yahoo.com wrote:
>>> Was just given a 1994 Grank Cherokee. V8 5.2 engine.
>>> Every once in awhileit sputters out andstalls. Wont start up
>>> right away when it happens, but will eventually fire back up
>>> like nothing happened. This has happenedwhiledriving, not
>>> just stalling out a a full stop. The engine is running great and
>>> has no power problems.
>>> Based on dailydriving, I'd say it pulls this trick about once every
>>> 10-15 days.
>>> Any Advice what I should look for first? Sound familiar to anyone?
>>> Thanks
>>> Mike- Hide quoted text -
>> - Show quoted text -
>
> I had the same problem with my 1995 Jeep Wrangler. It would run great
> and then stall while driving. The check engine light would not come on
> and it would start in a few minutes like there was nothing wrong.
> After 3 weeks at the Jeep service center and over 70 miles of test
> driving by the mechanic they found the Crank Position Senor was
> causing the problem. It sends a signal to the computer and tells it
> when to fire the plugs. When it stops sending signals the engine
> stops. Since it is an interment problem when you re-start the engine
> it's sending the signal again and the engine runs fine. After
> replacing this sensor I have had no additional problems.
>

The CPS issue is a bad connection one. They are computer signal plugs
that are 'very' sensitive to the slightest corrosion. If you just got a
replacement, expect another failure soon. The plug and socket for the
CPS need to be cleaned. You only cleaned half of it with the new part.
Electronic contact cleaner is the best for this. I then use and
recommend some dielectric grease on the plug seal skirts. The TPS also
has this connection issue.

'I' haven't heard of any 5.2L engines like the OP has having this CPS
issue, only the 4.0 engines....

Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
88 Cherokee 235 BFG AT's
Canadian Off Road Trips Photos: Non members can still view!
Jan/06 http://www.imagestation.com/album/pi...?id=2115147590
(More Off Road album links at bottom of the view page)

Re: 94 Grand Cherokee 5.2L V8. .. Intermittant stalling
 

dansexton@email.com wrote:
> On Mar 19, 7:27 am, Mike Romain <roma...@sympatico.ca> wrote:
>> I would go and open the gas cap right after it dies to see it if then
>> will start. If so, I would suspect a dirty air filter on the gas tank
>> vent. I don't know if the GC's can be changed or if they sucker you for
>> a whole canister for the $2.00 filter.
>>
>> Mike
>> 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
>> 88 Cherokee 235 BFG AT's
>> Canadian Off Road Trips Photos: Non members can still view!
>> Jan/06http://www.imagestation.com/album/pictures.html?id=2115147590
>> (More Off Road album links at bottom of the view page)
>>
>>
>>
>> mpdsvil...@yahoo.com wrote:
>>> Was just given a 1994 Grank Cherokee. V8 5.2 engine.
>>> Every once in awhileit sputters out andstalls. Wont start up
>>> right away when it happens, but will eventually fire back up
>>> like nothing happened. This has happenedwhiledriving, not
>>> just stalling out a a full stop. The engine is running great and
>>> has no power problems.
>>> Based on dailydriving, I'd say it pulls this trick about once every
>>> 10-15 days.
>>> Any Advice what I should look for first? Sound familiar to anyone?
>>> Thanks
>>> Mike- Hide quoted text -
>> - Show quoted text -
>
> I had the same problem with my 1995 Jeep Wrangler. It would run great
> and then stall while driving. The check engine light would not come on
> and it would start in a few minutes like there was nothing wrong.
> After 3 weeks at the Jeep service center and over 70 miles of test
> driving by the mechanic they found the Crank Position Senor was
> causing the problem. It sends a signal to the computer and tells it
> when to fire the plugs. When it stops sending signals the engine
> stops. Since it is an interment problem when you re-start the engine
> it's sending the signal again and the engine runs fine. After
> replacing this sensor I have had no additional problems.
>

The CPS issue is a bad connection one. They are computer signal plugs
that are 'very' sensitive to the slightest corrosion. If you just got a
replacement, expect another failure soon. The plug and socket for the
CPS need to be cleaned. You only cleaned half of it with the new part.
Electronic contact cleaner is the best for this. I then use and
recommend some dielectric grease on the plug seal skirts. The TPS also
has this connection issue.

'I' haven't heard of any 5.2L engines like the OP has having this CPS
issue, only the 4.0 engines....

Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
88 Cherokee 235 BFG AT's
Canadian Off Road Trips Photos: Non members can still view!
Jan/06 http://www.imagestation.com/album/pi...?id=2115147590
(More Off Road album links at bottom of the view page)

Re: 94 Grand Cherokee 5.2L V8. .. Intermittant stalling
 

dansexton@email.com wrote:
> On Mar 19, 7:27 am, Mike Romain <roma...@sympatico.ca> wrote:
>> I would go and open the gas cap right after it dies to see it if then
>> will start. If so, I would suspect a dirty air filter on the gas tank
>> vent. I don't know if the GC's can be changed or if they sucker you for
>> a whole canister for the $2.00 filter.
>>
>> Mike
>> 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
>> 88 Cherokee 235 BFG AT's
>> Canadian Off Road Trips Photos: Non members can still view!
>> Jan/06http://www.imagestation.com/album/pictures.html?id=2115147590
>> (More Off Road album links at bottom of the view page)
>>
>>
>>
>> mpdsvil...@yahoo.com wrote:
>>> Was just given a 1994 Grank Cherokee. V8 5.2 engine.
>>> Every once in awhileit sputters out andstalls. Wont start up
>>> right away when it happens, but will eventually fire back up
>>> like nothing happened. This has happenedwhiledriving, not
>>> just stalling out a a full stop. The engine is running great and
>>> has no power problems.
>>> Based on dailydriving, I'd say it pulls this trick about once every
>>> 10-15 days.
>>> Any Advice what I should look for first? Sound familiar to anyone?
>>> Thanks
>>> Mike- Hide quoted text -
>> - Show quoted text -
>
> I had the same problem with my 1995 Jeep Wrangler. It would run great
> and then stall while driving. The check engine light would not come on
> and it would start in a few minutes like there was nothing wrong.
> After 3 weeks at the Jeep service center and over 70 miles of test
> driving by the mechanic they found the Crank Position Senor was
> causing the problem. It sends a signal to the computer and tells it
> when to fire the plugs. When it stops sending signals the engine
> stops. Since it is an interment problem when you re-start the engine
> it's sending the signal again and the engine runs fine. After
> replacing this sensor I have had no additional problems.
>

The CPS issue is a bad connection one. They are computer signal plugs
that are 'very' sensitive to the slightest corrosion. If you just got a
replacement, expect another failure soon. The plug and socket for the
CPS need to be cleaned. You only cleaned half of it with the new part.
Electronic contact cleaner is the best for this. I then use and
recommend some dielectric grease on the plug seal skirts. The TPS also
has this connection issue.

'I' haven't heard of any 5.2L engines like the OP has having this CPS
issue, only the 4.0 engines....

Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
88 Cherokee 235 BFG AT's
Canadian Off Road Trips Photos: Non members can still view!
Jan/06 http://www.imagestation.com/album/pi...?id=2115147590
(More Off Road album links at bottom of the view page)