WEll i just bought a car from a deal not to long ago and it has a mopar PCM in it. I was just going to ask you guys what a PCM actually does. I don't know a whole lot about cars so give it to me in simple terms thank you. LOL

EGG

 

The Powertrain Control Module is the brain of your engine and tranny. It recieves information from different sensors and runs your engine fuel system and timing of the spark plugs, and controls the transmission shift points and Torque Converter Lock up. With out the PCM the car is useless.