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SUVs Jeep Cherokee and Jeep Grand Cherokee Jeep Grand Cherokee Start Stall Idle Problems
589 messages, Last post on Nov 26, 2009 at 4:03 PM
You are in the Jeep Cherokee and Jeep Grand Cherokee Forum. Your Hosts are steve_ & tidester
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Replying to: tuggajb (Feb 22, 2009 5:25 pm) Now I order the computer, when it arrives, Woops wrong item, this new one has 3 connectors mine only has one. I get a refund then call the dealer with the numbers off this module with one bolt and they tell me that is Not the PCM. The parts person does not have a picture, just comparing part numbers. So back to the jeep. That module that sits right in front of the coolant tank is Not the PCM. The PCM is up against the fire wall to the rear of the coolant tank. It is attached to a large metal plate and actually sits between that and the firewall, very hard to see. But look closely with a light and you can see It has three connectors plus a ground on the back,just exactly like the one I had ordered and took a refund. With a sheepish grin I return and get that PCM, the one with 3 connectors. The instructions tell you to ensure all relays are within limits or it may harm the module, so I also get a new Fuel Pump Relay. I think there are three relays with the same part number as the fuel pump relay. I replaced the relay and installed the new PCM. Test drove it over 100 miles, ran file. The next day another 50 ran fine. It's been cold lately so have not tested yet with AC going and long idles, but it appears to be running fine now. In total I replaced the TPC (36), ICM ($56), PCM ($125)Fuel Pump Relay ($16) and the battery connections plus cleaned lots of grounds. It appears to be fixed, I hope. Thru all of this I never had an engine light go on.
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I have a 95 JGC, v8, when I try starting it just turns over. Have to wait for fuel pump to kick on,was 1-2 min. suddenly 10-15 mins.Once pump reaches pressure it will start fine and runs perfect. used to restart fine once warm but acts up every time now.Got really bad over night
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brake pedal pulsed found bad left wheel bearing and put new rotors sti the same thinking abs or cv or front drive shaft please help!!!  :
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Replying to: zs711 (Mar 02, 2009 8:52 am) When you can't start an injected engine when its cold, SOMETHING is not allowing the fuel mixture to either richen up (like when you use the choke on your lawnmower)or actually GET to the cylinders(like plugged injectors, or a blocked fuel filter). Sometimes, a wide open IAC will cause the engine to act this way. Also, if your mass air flow sensor/airspeed sensor is dirty or bad it will take time for the engine to fire up. Again, just my two cents. |
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Replying to: texgking (Mar 02, 2009 4:07 am)
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| I finally solved the problem with stalling on my 1997 Jeep Cherokee Laredo...My mechanic replaced the ignition switch and coil... | |
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Replying to: tidester (Feb 28, 2009 11:19 am) Changed Fuel Pump Changed fuel presure regulator Changed idle control Valve Changed Computer (exact same one from Junk Yard) Chaned Fuel Filter Is there anything else you can think of on my 1993 Jeep Cherokee. Its starts, idles for a moment and I can give it gas and rpm's go up then just stalls like it's out of gas. Starts right back up then dies out again. There was something about a throttle positon sensor or something???? What is that. Thanks so much for anymore ideas. This is a straight 6cyl 4.0 Jeff
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Replying to: ike21 (Mar 02, 2009 7:59 pm) thanks for the info. |
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Replying to: sarge836 (Mar 03, 2009 11:53 am) tidester, host SUVs and Smart Shopper
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Replying to: tidester (Mar 03, 2009 2:17 pm) I couldn't believe it, about 4 years ago had the same issue but thought this was for the engine to fire. It was the ballast resistor (ceramic piece) mounted to the side of the engine compartment that just has two wires going to it. What I did was just take off a bunch of parts at the junk yard. Earlier I was on Auto Zone website just going over the trouble shooting for "stalling" it did mention that like 20 possibilities down the line. I didn't think anything of it but grabbed it at the last min. Well I was all pissed off after nothing worked and tossed a wrench in my tool bag and noticed that "ballast resistor" or ceramic piece and just plugged it in. Jeep ran like a charm after that.??? Thanks for all your help...Jeff
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