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1996 Jeep Cherokee Stalling

Tiny
ELTABOR
  • MEMBER
  • 1996 JEEP CHEROKEE
  • 6 CYL
  • 4WD
  • AUTOMATIC
  • 80,000 MILES
I deliver mail in this jeep and after 2 or 3 hours of stopping and going every 100' or so, it acts like it is choking on something. It drives any other time just fine. If I can't keep the engine running it will die and will immediately start but surges and stalls unless I have enough distance to keep it moving and then it rights itself. I have to turn the AC off. If I park it for 20 or 30 minutes it is fine. Last Saturday I used 1st gear going box to box and it took a little while longer to develop the problem. It doesn't do this in the winter, it started at the end of last summer. It seems like the jeep doesn't like the outside temperature above 80. 2 mechanics told me it had to be acting up when they look at it and that is not possible. Do you have any Ideas?
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Monday, June 23rd, 2014 AT 7:47 AM

13 Replies

Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
Try cleaning throttle plate on both sides and iac hole with choke cleaner.
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Monday, June 23rd, 2014 AT 9:44 AM
Tiny
ELTABOR
  • MEMBER
  • 13 POSTS
Where would the throttle plate be located? What is IAC hole and where is it located?
Thank You
Ed
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Monday, June 23rd, 2014 AT 10:16 AM
Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
Its at the endof the duct work from air cleaner you have to remove the duct work to see it an dwhen your throttle opens so does the plate.
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Monday, June 23rd, 2014 AT 12:04 PM
Tiny
ELTABOR
  • MEMBER
  • 13 POSTS
Ok thanks I did that and will let you this week end if that fixed it.
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Monday, June 23rd, 2014 AT 2:38 PM
Tiny
ELTABOR
  • MEMBER
  • 13 POSTS
It worked great one day and almost made it through the 2nd. Day. Any thoughts on how to improve the condition? I do appreciate the feeling you gave me on the day it worked great.
Thank You
Ed
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Sunday, June 29th, 2014 AT 7:47 AM
Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
If that helped what I suggested then check fuel pressure with a gauge. Should be 41-51 psi may be low.
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Sunday, June 29th, 2014 AT 8:04 AM
Tiny
ELTABOR
  • MEMBER
  • 13 POSTS
OK I am following with what has been done and it still has the problem of choking and stalling. 1st the IAC valve, both O2 sensors and the fuel filter were replaced. Next installed a replacement PCM for a trial period of 2 weeks. None of this repaired the problem. Then cam sensor or catalytic converter have not been replaced. Another symptom was noticed, sometimes it smells like a burnt match, not rotten eggs and not an electrical burn smell. Any more ideas?
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Sunday, March 22nd, 2015 AT 2:26 PM
Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
Scan for codes and do the fuel pressure test
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Sunday, March 22nd, 2015 AT 3:23 PM
Tiny
ELTABOR
  • MEMBER
  • 13 POSTS
The scan revealed 2 codes active in memory. O2 sensor signal voltage high and B1S2, & IAC coil circuit fault. I am not sure of fuel pressure. What would be replaced to repair fuel pressure, pump?
Thank You
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Sunday, March 22nd, 2015 AT 3:43 PM
Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
For fuel pressure could be regulator blocked line, filter or pump. Test it before wasting your money on needless parts like yo have already
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Sunday, March 22nd, 2015 AT 4:21 PM
Tiny
ELTABOR
  • MEMBER
  • 13 POSTS
Pressure is 50psi
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Tuesday, March 24th, 2015 AT 4:10 AM
Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
Ok pressure is ok without actually seeing this I have reached my limit of what to do next. So have a local pro look at this see if he can scan it and find something else on his scanner. I cannot find the B1s2 code and the other two codes that are coming up in memeory that you have may be the cause as you didn't give those out.
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Tuesday, March 24th, 2015 AT 5:41 AM
Tiny
ELTABOR
  • MEMBER
  • 13 POSTS
We found it, I hope. Mechanic came out to me on my route and heard and felt it act up. Did another pressure check then and the pump blew a lot of air. The pressure was fine, but the air suggested to him an old and dirty pump. Changed it and the filter because you are already there. I have had one day of no problems. I am telling you this so you can store it in your memory and I hope it helps you one day.
Thank You
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Thursday, April 2nd, 2015 AT 6:14 AM

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