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Q: 1990 chevy cav. wont start on 1990 Chevrolet Cavalier

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I have a 2.2 i was driving and the postive wire on the start moved and hit the other wires on the start.It wrecked the starter. I put in the new starter. The car turns over now. I have fuel to the intake. If I put fuel in the intake it will run for a few seconds and then dies. Could one the sensors be bad on the intake be bad?
No car image 94a1663db56199c5353592009e34aaa51078a2469bed068bb8d6f0ba43accf97
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If you had a direct short like that I would start by looking at the main fuses and fuse links and the fuse box fuses to see if any of them shorted out, but the first place to start is with a good wiring diagram and component location map. Autozone have some popular workshop manuals for free on line once you register (for free) on their website http://bit.ly/autozone_repair_info or there is a company that independent auto repair shops "buy" their information from that offer a very reasonable service to do it yourselvers. You can get a one week subscription or year subscription very cheap. The information is year make and model specific repair procedures, service bulletins, component locations, wiring diagrams ect.... great quality information same as the professionals have ,much better than generic workshop manuals from parts stores, much cheaper than the factory manual try http://bit.ly/mitchell_repair_manuals_online
and get an online repair manual subscription.
Th bad news is I just fixed a Mazda today that had something similar, it blew the main computer in the car, the owner didn't say they jump started the car backward spent time diagnosing problem needed a new computer total job about $600.
just to add to Pat, the heavy wire to the starter from the battery is the only wire in the car unprotected but the voltage surge resulting from this can be very damaging.

Roy
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