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Mitch Smiles
Lv 4
Mitch Smiles asked in Cars & TransportationCar MakesChevrolet · 1 decade ago

I have a 92 PE caprice-5.7?

I have a 92 PE caprice-5.7 200k on car and 8500 on motor and trans rebuilt- sudden voltage drops for 3 days then complete loss of all power (blackout of the whole car- so as I coasted to the stop- everything came back on- so I restarted it and is dropped power a few times ( but didn't die) in the next 2 hrs or driving- so a new CORRECT alternator was installed and the problem continued in the daytime- I cleaned the ground from motor to frame and the motor to firewall- took it out today for 20 min and it seemed fine- however if I turn the fan on high the trouble lights come on and it wants to die- but it doesn't- however the volt meter suddenly goes to discharge and it starves for fuel (new fuel filter too- I have ruled out the alternator- I did not clean the engine block sides of the grounds as they are oil free and it was rebuilt by the county 2 years ago - Help

2 Answers

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  • apoorapothecary
    Lv 7
    1 decade ago
    Favourite answer

    Like the previous post says - look for shorts, not just in the fan/fan relay, but in the wiring leading up. Perhaps there's some splices in the wiring from the police duty that haven't been done quite right.

    Also, check your relays and see if they're within spec.

    If you haven't cleaned the engine grounds, run a continuity check from the block surface to the ground and see if you have high resistance before you worry about disconnecting and servicing those connections.

  • (A)
    Lv 7
    1 decade ago

    Your fan circuit is shorting out.

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