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91 GMC Jimmy S15 not firing


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Posted

I have a 1991 GMC Jimmy S15 V6 4.3 and it will not start. Put a screwdriver in the new plug wire and crank the engine and no spark against a ground. We tested the Coil and the ignition module and they are OK. Someone told me there is a sensor on the Crankshaft pulley that may be bad causing the firing system to shut down. I can not find it. Any ideas? Thanks in advance, Bill Rodgers.

Posted

Don't know about the sensor but do you have a ground problem possibly or is the sending until in the distributor itself good? I would bet that it has gone bad. Take the cap off and you could be able to unscrew a u looking thing that has two wires on each side and two screws holding it down to the distributor housing. Have that checked our 91 had that go bad I replaced it with an american on the factory Delco Remy was made in China!!! bastards.

Posted

Fixed. It has a 2nd coil located inside the Distributor. It is called a pickup-coil. There is a spacer above it with magnets on it. That was cracked and the dealer wants $100.00 for the replacement part. Autozone had a complete distributor with the module and the pickup-coil for $99.00.

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