Silent start 2002 jeep grand cherokee12/15/2023 ![]() On most, if not all, Jeep Cherokee trims and model years the PCM will be on the passenger side of the engine compartment, mounted to the firewall behind the coolant reservoir and held in place by three or four long bolts.įor full access to the PCM it may be necessary to remove the coolant reservoir, particularly if the PCM itself needs to be removed for testing or repair. ![]() It consists primarily of a circuit board underneath a protective plate, and there are typically three wire connectors going into the module. The PCM on a Jeep Cherokee is contained in a metal, box-like module that is mounted to the firewall (insulated sheet of steel that separates the engine compartment from the passenger compartment) under the vehicle’s hood. What Does the PCM Look Like and where can it be Found 1993 Jeep Cherokee Powertrain Control Module (PCM) location photo | Photo Source Some drivers have reported that they did not even realize their vehicle had stalled until the accelerator, brakes, or power steering failed to respond. ![]() Other symptoms include engine knocking or stuttering, erratic or jerky gear shifting, difficulty starting the engine and a noticeable drop in fuel efficiency (gas mileage).Ī significant number of drivers have reported that not only did their Jeep Cherokees lose engine power while driving, but in nearly all cases, stalling occurred without any warning and with no indicator lights on the instrument panel. In other words, the PCM functions as the vehicle’s brain, responding to dozens of sensors and instructing systems how to work.Īs is now apparent to many Jeep Cherokee owners and their mechanics, a faulty PCM can manifest itself through a variety of conditions, the most notable of which is sudden stalling while the vehicle is being operated. 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. What is a PCM and What Does it Have to do with Stalling A deep dive into actual solutions offered by the most trusted sources, fellow Jeep Cherokee owners like you. In this article, we examine the most common causes for Jeep Cherokee stalls and how to fix them. 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. Most stalling problems pertain to model years starting from the mid-1990s all the way to recent model years, and have occurred with virtually every trim level. Here is why your Jeep Cherokee keeps stalling: Many stalling problems can be attributed to the PCM or crankshaft sensor and there are steps you can take to fix these issues yourself or at the very least point your mechanic in the right direction ![]() Why Your Jeep Cherokee Keeps Stalling and How to Fix It How a Faulty Crankshaft Sensor can Cause Stalling.There are several simple solutions to this particular problem:.PCM Cover Plate Screws are Shorting out the Circuit Board.What Does the PCM Look Like and where can it be Found.What is a PCM and What Does it Have to do with Stalling.Why Your Jeep Cherokee Keeps Stalling and How to Fix It.
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