Question about 1995 Ford F150 Styleside Regular Cab

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1995 ford f-150 5.8liter ignition wiring schematics free

Truck has no spark and no injector pulse

Posted by Anonymous on


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Posted on Jan 02, 2017



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you should have the pcm scanned for dtc's... probably a bad crank or cam sensor

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Have you run the OBD2 electronic engine control fault code test? both the of the tests must be done and the result's diagnosed, that is the key on engine off test (KOEO) and the key on engine running test (KOER) as well. How have you confirmed the injector pulse is lost? each injector has its own driver in the PCM (Powertrain Control Module), the injector grounds the injectors to open them in the proper sequence, it is the same as the firing order of the spark plugs. To confirm loss of injector pulse you use a little tool known as a "NOID", they can be bought at any good auto parts store for about $5.00, they contain a little light that flashes when the injector pulse is present, it plugs into the harness connector at each injector. Each injector shares the same Battery (+) circuit and is powered off of a fuse and it in turn is powered off the ignition starter switch.

Posted on Mar 28, 2011

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