4.3 vortec problems - Off-Road Forums & Discussion Groups
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post #1 of (permalink) Old 07-06-2002, 10:25 AM
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4.3 vortec problems

I just put in a fresh 4.3CPI in my 92 Blazer. I finally got it timed corectly but now it wants to start hard when it's cold and every so often it throws me code 43 which is elecrtonic spark contol. (yes, I cleared the code) I have checked all of the wires and they are good. Any ideas? could the EST sensor be bad?
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