Question about Pontiac Sunfire

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Intermittent stalling My car has been stalling intermittently for several months and has left my mechanic puzzled. The stalling can occur at any speed,(even idling or reverse) and always happens when the engine is completely warm. Once I pull off the road, which is a painstaking process in a dead vehicle, it always restarts without any hesitation. According to my mechanic, the only code is in the body computer for a communication loss to the engine computer. He cleared the code to see if he could duplicate it, but without success. If any experts out there have encountered this problem, I would greatly appreciate their help! I can't afford to continue paying for diagnostic time that doesn't result in repair.

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  • Rachel Beiser
    Rachel Beiser Apr 15, 2014

    Also, this is a 2007 Grand Prix. Not sure why it is showing a Sunfire..

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  • 35 Answers

I have had that happen before,Mine was crank sensor.The three things i know that would cause that problem.#1 crank sensor #2 cam sensor #3 module plate under coils.

Posted on Apr 15, 2014

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6ya6ya
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Posted on Jan 02, 2017

c1apton15
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SOURCE: My 2003 Chrysler 300M 3.5L is seriously missing

Go to Autozone, Advance, etc.. any good parts store and OBII scan done (fault scan) they do this FREE. Scan will tell you what sensor(s) to go after to fix. Once you repair or replace sensor have parts store reset your light.

Posted on Mar 03, 2011

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SOURCE: 1997 Mercury Sable GS

Two possible sensors could be affecting it like the TPS or MAF sensor. The Throttle Position Sensor (TPS) might have a bad spot where the ECM won't get signal properly and causes the RPM to fluctuate

Posted on Aug 14, 2008

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SOURCE: intermittent hesitation at steady speed.

It could be the spark plugs, plug wires, distributor cap, rotor in the cap, or an O2 sensor. does the check engine light come on?

Posted on Feb 08, 2010

  • 1 Answer

SOURCE: Intermittant Loss of Power and miss-firing . TD5 Pursuit

I have a 97 disco starts fine but when it warms up & you put your foot hard on the accelerator it looses power if your easy with the accelerator it slowly picks up speed?

Posted on Apr 27, 2011

  • 8 Answers

SOURCE: I have completed a diagnostic

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Posted on Sep 04, 2011

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