engine problem

1989 CHEVROLET CAVALIER
123,000 MILES • 6 CYL • FWD • AUTOMATIC
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LARRYSAMMONS
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i have a 89 chevy cavalier it runs fine but if u give it gas it loses the injecter pulse. but if u unplug just one injecter it has a mise but it runs good and the injecter pulse is fine. and it don't matter witch one u unplug. its a 2.8 auto. trans. its the weardest thing i have ever seen. does anyone no what in the world is wrong with this thing?
May 1, 2011 at 10:15 PM
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RASMATAZ
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If its a distributor driven igniton system check the pick-up coil. Direct ignition system Inspect and test the camshaft and crankshaft position sensors-
May 1, 2011 at 10:22 PM
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WRENCHTECH
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Just to throw out a wild guess, that would have to be something on the idea of a bad ground connection to the PCM, bad connection in the harness to the injectors or a bad PCM itself.
May 1, 2011 at 10:53 PM
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LARRYSAMMONS
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its not dis. drive and i put a new computer in it and cheched the wires going to the injectors. im like u i think its the ground going to the computer but i dont no witch wire it is or were its grounged at would u or anyone else no thank u
May 2, 2011 at 5:59 PM
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WRENCHTECH
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Here are the pinout diagrams for that ECM
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May 2, 2011 at 6:11 PM
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LARRYSAMMONS
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that fixed the cavalier thank you very much. would u have a wiring diagram for a 2001 dodge grand caravan 3.3L auto. trans. it dont have a hot going to the injectors or the coilpack i have checked all the fuses and fuseable links have you had any cases like this? thank you.
May 3, 2011 at 2:13 PM
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WRENCHTECH
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That would be a subject for a new question.
May 3, 2011 at 2:36 PM
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