CHEVY TRUCK

1993 Chevrolet

Tiny

chasp1956

January, 7, 2011 AT 4:19 AM

4.3 chevy 2wd auto trans, engine will not run prperlybackfires surges, coolant temp sensor on scanner surges from -40 to 170. Unplug timing conn. Engine will idle sensor reads normal. Have tried ac delco pcm still have same problem.

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