Question about 2003 Pontiac Grand Am

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My 2003 Pontiac Grand Am recently kept stalling but would start back up again. I had the fuel pump system replaced. It ran fine for one week but it is now dying again but starts immediately back up. The car tends to **** a little sometimes while it's being driven. Any suggestions?

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Hi, Classic ckp(crankshaft position sensor problem), check ckp harness wiring from ignition module to ckp sensor(tends to short out or burn on hot engine parts). You can repair wiring usually if its not too bad. What usually happens is it drops ckp signal and car shuts down but signal is immediately restored when cranking back up. Very hard to catch this problem in the act even with a scanner while driving usually does not set a code either. I usually inspect wiring to sensor back up to module for burn or melted spots. If all looks good even with a extensive wiggle test when engine is warm, I would replace ckp sensor. P.S. This will sometime result in bogging and misfires too when its getting ready to stall.

Posted on May 22, 2011

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Posted on Jan 02, 2017

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