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2002 Pontiac Bonneville Question: Why is my car jerking upon acceleration?

 

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mallory815, 3.8L V6, Wyoming, MI, December 01, 2013, 19:51
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I recently had the transmission solenoid replaced, but now my car is jerking everytime I drive. It normally starts up about 10 minutes into driving, like after the car is warmed up is when I notice it. Before I got the solenoid replaced it rarely jerked, maybe once in a great while. But now its literally all the time! What else could possibly be wrong? Someone please help!!

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    pushrod December 01, 2013, 20:30
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     Master

    You have an 'engine misfire' that is more pronounced and frequent now that the transmission solenoid has been replaced. It is now actually shifting into a higher gear than it was before, you can't really feel it, and then the engine is under more load. That is your jerking or jumping! Have it tested to find this misfire. Is the service engine soon light on or flashing?

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    mallory815, December 02, 2013, 06:23
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    yes the service engine light is on

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    pushrod, December 02, 2013, 06:29
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    A scan test will show where the problem is. Scanner can tell which cylinder is misfiring. AutoZone will read the codes for free! However that is not a scan test. You can post the code numbers and we can help.

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  • Answer #2

    Greg's Orange Auto (12997 Answers) , Orange, CA - (714) 361-9386
    globalhelper December 02, 2013, 06:22
     Master

    if light is on scan codes and post so we can adv

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    mallory815, December 02, 2013, 08:18
     Rookie

    p0440 is the code autozone got

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