What happens if I replace my PCM in my Jeep Cherokee?
A Jeep Cherokee PCM replacement will be pointless if the shorted solenoid or actuator is not located and fixed, as the voltage overload it creates is guaranteed to damage the replacement unit. Similarly, if the transmission or fuel injector wires become corroded, they can lose conductivity and lead to engine failure.
What’s the difference between ECM and PCU in a jeep?
The Jeep Engine Control Module, known as the PCM ( Powertrain Control Module) ECU ( Electrical Control Unit ) or to simply it put the Automotive Engine Computer . Confusing right? If you would like to know more about their differences you can read up on our previous post ” Difference between ECM, ECU & PCM ” which we covered it in details.
How to reset your Jeep ECM ( Engine Control Module )?
Here is a little summary of it , the ECM is the brain of the vehicle and just like everything else you’re going to have to reset it and test it to make sure it’s in a great working condition. To reset your Jeep ECM you’re going to have to follow a couple of easy steps and you’ll be done before you even know it.
What causes check engine light to come back on after replacing PCM?
If you end up replacing your PCM and the Check Engine light comes back on after, don’t immediately assume that the replacement PCM is faulty. Something else is wrong with the vehicle that needs to be located, diagnosed, and repaired. 4. Jeep Cherokee has difficulty starting.
A Jeep Cherokee PCM replacement will be pointless if the shorted solenoid or actuator is not located and fixed, as the voltage overload it creates is guaranteed to damage the replacement unit. Similarly, if the transmission or fuel injector wires become corroded, they can lose conductivity and lead to engine failure.
The Jeep Engine Control Module, known as the PCM ( Powertrain Control Module) ECU ( Electrical Control Unit ) or to simply it put the Automotive Engine Computer . Confusing right? If you would like to know more about their differences you can read up on our previous post ” Difference between ECM, ECU & PCM ” which we covered it in details.
Here is a little summary of it , the ECM is the brain of the vehicle and just like everything else you’re going to have to reset it and test it to make sure it’s in a great working condition. To reset your Jeep ECM you’re going to have to follow a couple of easy steps and you’ll be done before you even know it.
If you end up replacing your PCM and the Check Engine light comes back on after, don’t immediately assume that the replacement PCM is faulty. Something else is wrong with the vehicle that needs to be located, diagnosed, and repaired. 4. Jeep Cherokee has difficulty starting.
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.
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 long does it take to replace a MAF sensor?
The MAF sensor itself is often quite expensive, as you sometimes have to replace the whole MAF sensor housing. Even the sensor itself can be expensive. Luckily, replacing the MAF sensor is often very easy and done in 10 minutes for most car models.
What do you need to know about replacing your PCM?
Close enough isn’t good enough when it comes to replacing PCMs. It must be the correct replacement for the application. Accurately identifying the PCM requires not only the vehicle year, make, model and engine size, but also the OEM part number on the PCM itself. Most supplier’s catalogs list replacement PCMs both ways.
How is the throttle position sensor used in a PCM?
The PCM uses this information to determine control of various output devices, such as the fuel injectors, transmission shift solenoids, etc. Basically, the throttle position sensor is a variable resistor. Its internal resistance and output signal voltage change in relation to throttle position.
The PCM uses this information to determine control of various output devices, such as the fuel injectors, transmission shift solenoids, etc. Basically, the throttle position sensor is a variable resistor. Its internal resistance and output signal voltage change in relation to throttle position.
Close enough isn’t good enough when it comes to replacing PCMs. It must be the correct replacement for the application. Accurately identifying the PCM requires not only the vehicle year, make, model and engine size, but also the OEM part number on the PCM itself. Most supplier’s catalogs list replacement PCMs both ways.
Can a PCM be repaired after a flood?
Most remanufacturers won’t even attempt to repair a PCM if the vehicle it came out of was submerged in a flood. Replacement is the only option. Thermal stress and vibration can form microcracks in circuit boards (which are repairable).