Why do I need a PCM in my car?
The PCM in your car or truck is designed to control and regulate all of its functions and parts. Problems in the computer can lead to serious problems with almost every aspect of your car or truck because the computer has to work properly in order for everything else to follow suit.
Why does my Grand Prix GTP go into reduce power mode?
I have a 2004 Pontiac Grand Prix GTP with about 140k miles on it that goes into reduce engine power mode occasionally. I think it only does it going up hill, but not every hill. Repair shop said throttle body $900. I replaced it myself as well as the accelerator pedal sensor (due to the codes that pop up) and I am still receiving the same codes.
How is the fuel system controlled by the PCM?
The PCM is what ultimately controls and regulates your fuel system. Different sensors in the engine send the PCM data about what the engine is doing. The PCM then adjusts the fuel mixture based on this data. If the PCM is not working properly, odds are that the fuel mixture will not be right.
Why does a bad PCM cause a problem?
Problems in the computer can lead to serious problems with almost every aspect of your car or truck because the computer has to work properly in order for everything else to follow suit. The PCM is what ultimately controls and regulates your fuel system. Different sensors in the engine send the PCM data about what the engine is doing.
Can a bad PCM cause a car not to run?
In some cases, a PCM problem will cause the vehicle not to run at all. The PCM’s functions include positioning the crankshaft and controlling the ignition spark and timing.
The PCM is what ultimately controls and regulates your fuel system. Different sensors in the engine send the PCM data about what the engine is doing. The PCM then adjusts the fuel mixture based on this data. If the PCM is not working properly, odds are that the fuel mixture will not be right.
I have a 2004 Pontiac Grand Prix GTP with about 140k miles on it that goes into reduce engine power mode occasionally. I think it only does it going up hill, but not every hill. Repair shop said throttle body $900. I replaced it myself as well as the accelerator pedal sensor (due to the codes that pop up) and I am still receiving the same codes.
What is the PCM in a car called?
by Jen Davis. The powertrain control module, otherwise known as the PCM or computer, is essentially your vehicle’s brain. The PCM in your car or truck is designed to control and regulate all of its functions and parts.