What does the PCM do on a Jeep Cherokee?
The PCM (Powertrain Control Module) is a computerized system that monitors and controls various systems on a Jeep Cherokee, including vital operations such as engine timing, the transmission (gear shifting), anti-lock braking, fuel to air ratio mixing and quite a few others.
How can I repair my PCM on my Jeep Wrangler?
The small cover will come right off, the larger one will have to be gently pried off as it is actually the 5 volt regulator board of the PCM. This is the focus of our attention. turn it over and carefully clean any of the jelly potting compound from the solder pads of the connector strip that plugged into the other part of the unit.
Why are my Jeep PCM screws too long?
Some units have come frome the factory with screws that were too long, and eventually due to vibration shorted the unit out. I replace them with shorter sheet metal screws as standard operating procedure to avoid this issue, since I never ran into this personally.
Can you test a 60 pin PCM on a jeep?
Here are some very important safety precautions when testing the wires coming out of the 60 pin PCM connector. If one or any of the wires on your Jeep Grand Cherokee DO NOT match the color stated in the pin out charts, then you should not use the pin out charts in this article.
What does the PCM do on a jeep?
The Powertrain Control Module (PCM) is the computer that controls most of your Jeep’s essential systems. The PCM controls the engine timing, the fuel to air ratio, the transmission, and the anti-lock brakes, along with dozens of other smaller functions.
Some units have come frome the factory with screws that were too long, and eventually due to vibration shorted the unit out. I replace them with shorter sheet metal screws as standard operating procedure to avoid this issue, since I never ran into this personally.
How often should I Reset my Jeep ECM?
For good measure. Anytime that you reset your Jeep PCM you should keep in mind that you will need to drive your car for approximately 10-15 miles so your Jeep ECM can re-learn your driving habits and fuel management. Good luck with your reset and be sure to share this with anyone that might be in need of it!
Can you replace the PCM on a 2007 Jeep Liberty?
When you’re searching for a replacement PCM, it’s important to keep in mind that PCMs are programmed for a specific make and model of vehicle. If you drive a 2007 Jeep Liberty with a 3.7-liter V6, you can’t use just any PCM. You can’t use just any Jeep PCM replacement.
Why does my Jeep Cherokee stall after warm-up?
O.K. Here is the deal I have a 2000 Jeep Cherokee Sport 4×4 automatic that stalls after about 30minutes +/-. This goes back to earlier this year when it became hard to start. Come to findout it was the crankshaft sensor. Replaced and all was good. Then it started to act up again. 3months later.
How many miles does a Jeep Cherokee take to stall?
Jeep Cherokee XJ’s and Cherokee KJ’s with less than 25,000 miles have experienced stalling problems, but most cases seem to involve vehicles with 75,000 miles or more on them, and it is with particular reference to these older vehicles that the PCM is most relevant.
What should the pressure be while running a jeep?
:thumbsup:. We pulled the jeep in and tried to start back up, the engine would run for about 20-30 seconds then slowly sputter and die again. We were stumped. We tested full pressure at the rail, Jeep states that while engine running should maintain 31 psi while running (For a 92 XJ).
The PCM (Powertrain Control Module) is a computerized system that monitors and controls various systems on a Jeep Cherokee, including vital operations such as engine timing, the transmission (gear shifting), anti-lock braking, fuel to air ratio mixing and quite a few others.
Why does my Jeep Grand Cherokee start stall idle?
Is this the IAC or possibly the fuel filter.. Its driving me crazy. I have a 1997 Grand Cherokee 5.2L V8. It has a problem running. You can be driving down the road and let your foot off the game and the jeep will just shut right off. If you say pull into a parking spot and let your foot off the gas it will shut off.
Jeep Cherokee XJ’s and Cherokee KJ’s with less than 25,000 miles have experienced stalling problems, but most cases seem to involve vehicles with 75,000 miles or more on them, and it is with particular reference to these older vehicles that the PCM is most relevant.
Why does my 1989 Jeep Grand Cherokee not start?
I had a good mechanic put a 4.0 Jasper in my 1989 Cherokee. He said it wouldn’t start and he thought the problem was the ECU. He installed an ECU and the Jeep ran fine for about 4000 miles. Then it would start one day but not the next. When it doesn’t start, there is no spark.