Question about 1992 Pontiac Grand Prix

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95 Grandprix will not start. Found the Fuel Injection fuse blown, Unplugged all injectors and fuse still blows. With ECM disconnected the fuse does not blow yet still has power

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It will not blow when ECM is disconnected, cause there is no power to the injectors when you disconnect the ECM. When you turn ignition on check for fuel pressure at fuel rail. Release pressure at nipple on fuel rail. If no pressure exists puel pump is shot. If there is pressure your fuel filter might be plugged.

Posted on Sep 30, 2009

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Posted on Jan 02, 2017

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Hi K Jones, I'm glad to help!

The only way other then checking the resistance of each Injector would be to unplug one Injector at a time until the fuse doesn't blow then you have found the bad injector. NOTE: Don't rule out a wiring issue grounding out on the engine somewhere because this happens a lot. Hope this helps and have an awesome day K.

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