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Starter engaged all the time 1981 F100 302


Pogo619

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Hey guys, I am not sure why or how this happened. I disconnected the battery to do some work, numerous things and now if I connect the negative battery cable the starter immediately starts running. But, not turning the engine over. More like grinding the flywheel. I am not sure where to start. Any help would be appreciated.

Thank you, Jeff

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It sounds like some wiring got crossed or connected wrong. On your starter relay (on the fender) there should be two wires, one is a red with a blue stripe, it should be on the S small terminal and there is another wire it goes on the I terminal (Trucks with the hot fuel handling package used that terminal).

Unplug the wire to the S terminal and see if the issue goes away, if not, then your starter relay is bad.

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