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View Full Version : 2000 JEEP CHEROKEE SPORT WEIRD PROBLEM

your_auto_tech
March 15th, 2006, 13:50
OK HERE WE GO, I GOT A 2000 JEEP CHEROKEE SPORT 4.0. THIS TRUCK WILL START AND IDLE , WITH A MISS. IF YOU REV THE ENGINE IT HAS A LEAN BACKFIRE, HARSH MISS AND DIES. IT HAS ALL 3 COIL CODES AND A CAM/CRANK SIGNAL CODE. SO I REPLACED THE PLUGS, COIL PACK, CAM AND CRANK SENSOR TO NO AVAIL. FUEL PRESSURE STAYS GREAT AND HOLDS GOOD EVEN AFTER THE TRUCK DIES, SO I INSTALLED A PCM AND STILL DOES THE SAME HAS ANYONE SEEN THIS OR HAVE ANY IDEAS
riverfever
March 15th, 2006, 14:05
5 things:

1. The caps are difficult to read.

2. Any auto tech that is MINE needs to be able to problem solve all of the little subtleties that I might, by chance, encounter on any given day.

3. Welcome to NAXJA

4. I'm so sorry I can't be of ANY assistance, perhaps someone else will be able to help. Let this stew a bit.

5. Good day, sir.
casm
March 15th, 2006, 14:07
1. The caps are difficult to read.

Additional valuable information on how to solve this problem can be found here (http://www.naxja.org/forum/showthread.php?t=79810).
langer1
March 15th, 2006, 14:18
SO I REPLACED THE PLUGS, COIL PACK, CAM AND CRANK SENSOR TO NO AVAIL. FUEL PRESSURE STAYS GREAT AND HOLDS GOOD EVEN AFTER THE TRUCK DIES, SO I INSTALLED A PCM AND

Someone owes you a Real nice christmas card.
So what codes do you have now?
your_auto_tech
March 16th, 2006, 05:15
I have the same codes as before
RTicUL8
March 16th, 2006, 05:40
:lecture:



:thumbup:





.
rstarch345
March 16th, 2006, 07:17
Have you checked your upstream O2 sensor. It regulates the AIR/FUEL mixture. If you are running that lean, that my be the problem.
langer1
March 16th, 2006, 07:49
I have the same codes as before
Which Are? Numbers please not opinions or we will be right back where you are now.
your_auto_tech
March 16th, 2006, 09:10
Hey thanks for the thoughts. But i finally figured out the prob. Thanks again
langer1
March 16th, 2006, 09:16
Hey thanks for the thoughts. But i finally figured out the prob. Thanks again
And would you be so kind and tells us what it was?
your_auto_tech
March 16th, 2006, 09:51
I have access to a snapon scanner and it said the cam and crank were in sync but guess what. After futher checking the cam and crank where out of sync by 2.5 degress. I nor any of my jeep guys knew this. So i reajusted the cam sensor and it fixed the problem.