I had a prolonged over charing problem that I caught just before it caused major problems. It blew MOV resistors in the FEM, REM and the cluster. I repaired all of those and replaced the fuses that had blown as well. I have a new motorcraft alternator on it and a new battery. I have check all the grounds, connectors and common rub spots for wires that would cause drain. Everything is fine and I am still getting too much voltage from the charging system that is controlled by the PCM(smart charge system). The PCM had dry connections. At startup I'm getting nearly 20v to the battery. I am afraid to let it run too long to damage all the repairs I made. I am at my wits end and help! What is causing this? Is it the PCM itself?
have the same problem?
Tuesday, December 10th, 2013 AT 1:31 PM