Truck Wont Charge
#1
Truck Wont Charge
k this trucks is a 1993 ic and all of a sudden the thing quits charging the battery so we replace the the alternator and it still wont charge the thing. we took all the tape off the wires to see if that was the problem and there fine my buddy thinks it is the computer but im not sure wat do you guys think?
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If the PCM (CPS) doesn't get a signal from the crank sensor telling it the engine is running it will not let the integrated VR tell the alternator to charge. So basically, yes.
PCM failure in these trucks is very rare. Now a dozen people will log on and tell me I'm wrong because theirs failed. They often get replaced unnecessarily in the practice of throwing parts at something without proper troubleshooting.
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Mudbug (05-04-2010)
#10