Question about 1991 Plymouth Acclaim

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CAR LOOSES BOGS OUT AT HWY SPEEDS AND IDOLOS ROUGH .

COULD IT BE THE IDOL CONTROL VALVE

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  • jason_eva_cy Jan 02, 2009

    NO I HAVE NOT PULLED THE CODES YET HOW DO I GO ABOUT DOING THAT DO I NEED A CODE READER OR IS THERE ANOTHER WAY.



  • jason_eva_cy Jan 03, 2009

    i pulled the codes and got code #12 code #21 and code #51 a i found them online and they refer to the oxygen sensor.

  • Mike Butler
    Mike Butler May 11, 2010

    Doubt it's idle control related, that usually will cause stalling at idle or stop & turn etc, slow speed operation, not on the highway. Have you cycled your key to retrieve any trouble codes?

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  • Plymouth Master
  • 6,674 Answers

Cycle your key on (not start, just on) off, on , off ,on, and leave it on. have paper & pen ready. Watch flashes from check engine light. It will flash quick, pause flash quick. It will be a 2 digit number each time. For example: flash, flash, short pause, flash, flash. is # 22. Flash, flash, flash, pause, flash ,flash,flash. is # 33. There will be a slightly longer pause between codes,(after every 2 digits) then next code starts. 2 numbers again. When you get 5 flashes, pause, 5 flashes = code # 55 means end of message. Check it out and let me/us know what you get.

Posted on Jan 02, 2009

  • Mike Butler
    Mike Butler Jan 03, 2009

    O2 sensor good place to start.

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