Last post on Dec 10, 2013 at 2:04 PM
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Jeep Grand Cherokee
#498 of 1241 1996 Jeep Grand Cherokee Stalls/Hard to Restart
Apr 01, 2009 (6:02 pm)
I have a 1996 JGC 4.0 that has started stalling. It has gotten worse in the last 2 weeks. I have replaced the idle air motor, the throttle position sensor. No vacuum leaks, all grounds appear to be good, no corrosion. Going to check the low temp thermostat in cooling sytem, crank postion sensor. I have read some posts where people have taken the PCM computer and sent it out to have it rebuilt. Does anyone know where or who to send this to??? This is driving me nuts.
#499 of 1241 Re: 1996 Jeep Grand Cherokee Stalls/Hard to Restart [cc757]
Apr 01, 2009 (7:29 pm)
My mechanic replaced the starter and coil and did not have the problem since.
#500 of 1241 Re: 1996 Jeep Grand Cherokee Stalls/Hard to Restart [bradpans]
Apr 02, 2009 (9:33 am)
Thanks bradpans, I just got back from my mechanic's shop and he replaced the temp sensor on top of the H20 pump that talks to the fuel system. I drove the car for about 10 miles. No surging at idle or stalling yet. We may be on to something. I will have him double check the starter and coil again. CC
#501 of 1241 98 & 01 Will not start when fuel gauge reads zero
Apr 02, 2009 (10:20 am)
My 2001 GC 4x4 v-8 would stall at any speed. Every time it stalled the fuel gauge reads empty, wait for 3-5 minutes and the fuel gauge would register the full tank and it would start right up every time. I changed the CPS, ICS, cleaned and replaced battery terminals, none of this cured the problem. Next I replaced the TCM and the problem went away.
Now my 98 6cyl, 2WD GC Laredo with nearly the identical problem, The fuel gauge reads empty (tank is full) and it will not start. It has not been ran for over 2 years. I've clean connections and checked the fuses and relays, nothing helps.
There is something with the GC's that does not allow the fuel gage to register. I assume something somewhere is not functioning properly and not allowing the fuel gauge circuit which also must include the fuel pump from operating.
In a previous post I was informed the fuel pump and gauge gets their grounds thru the TCM. Replacing the TCM did cure the 2001 but that's an expensive "trial" for my 98.
Anyone have a workaround to isolate the actual problem? ]
We thought the 98 was out of gas, sitting so long and all, but after adding about 2 gallons it was overflowing. There must be a way to bypass the TCM fuel pump control to determine if that is actually the cause. Sure wish we could make the fuel gauge operate normally when desired.
Anyone know if the TCM from the 2001 GC v-8, 4x4 will work in a 98 GC 6 cly? I would like to try my old TCM in the 98, at least it wouldl start and run for awhile.
Thanks for any suggestions.
#502 of 1241 1996 Jeep Grand Cherokee stalling problem FIXED
Apr 07, 2009 (9:25 am)
After chasing our tails for weeks and replacing sensor after sensor, I had a guy come to my mechanics shop and hook up special diagnostic equipment just for the Jeep. He found nothing. As he was walking away from the car, it stalled. He left the key on, and hooked up his equipment, nothing....the computer or PCM was shot. So I bit the bullet and got a new PCM and the car runs fine. SAVE YOURSELF THE TIME AND MONEY AND START WITH THE COMPUTER, THEY ARE ALL DEFECTIVE AND WILL DIE ON YOU EVENTUALLY. THESE THINGS GO BAD AND DON'T SHOW ANY CODES. THIS WILL CAUSE ALL KINDS OF HAVOC WITH VARIOUS SYSTEMS AND WILL DRIVE YOU NUTS TROUBLESHOOTING. YOU WILL SAVE YOURSELF A LOT OF HEADACHE. Forget about quick fixes... zip ties, backing out screws and all that, it won't FIX the REAL problem which is a faulty design by Chrysler....and they know it. I personally will never own a Chrysler product again. By the way, does anyone want a nice used Jeep??
#503 of 1241 Re: 1996 Jeep Grand Cherokee stalling problem FIXED [cc757]
Apr 07, 2009 (12:30 pm)
its only 13 years old should probly have the original tires on it
#504 of 1241 Re: 1996 Jeep Grand Cherokee stalling problem FIXED [tuggajb]
Apr 07, 2009 (1:21 pm)
is that supposed to be funny?? get a life
#505 of 1241 Re: Hard to start and keep idleing [tmpga]
Apr 07, 2009 (10:04 pm)
It has been a few months from the time of your posting; I hope you some how get this message. My jeep is doing exactley what yours was doing; did you find the problem and how was it fixed?
#506 of 1241 Re: Hard to start and keep idleing [jeephelp]
Apr 08, 2009 (4:48 am)
I had the PCM (computer) replaced. So far so good. It's only been a couple of days, but it hasn't even tried to stall. I put a more detailed post up on 07 April. I had a guy come out with some Jeep specific diagnostic equipment. He hooked it up and found nothing. No codes. A couple of times HIS computer screen blanked. After he disconnected, the jeep stalled. While the key was still on, he hooked back up to look for codes and got no readings at all from the computer. (Bad motherboard so to speak) So the computer was shot and I got a new one. $400 bucks. If you go down that road, DO NOT use Auto Computer Exchange from Davie Florida. I have heard nightmares about their products and customer support. Good Luck