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    How to diagnose bad ecm? Check engine light and fuel pump delay upon cold starts.

    Did you figure this out my 92 xj has no light and no fuel pump priming at all, it'll crank but not start. i can jump the wires in the relay box and get the pump to run and if i supply power at the ecm the pump and check engine light will come on. I'm starting to think a bad ecm
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