Question about 1987 Volvo 740

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WHEN ON IDLE, THE RPM'S GO UP AND DOWN - 1987 Volvo 740

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  • Anonymous Aug 26, 2008

    When idling my turbo 99 volvo S80 T6 rpm go up and down, and while driving their is loss of power while excelerating, there is a check engine light on.

  • triplefluv Sep 16, 2008

    My check engine light is on. Was told the only thing that is wrong was my gas cap. Replaced the cap and a tune up and still did not pass my states emissions test. Plus I also lose power and cant get over 35mph. Its not the transmission I hope!!!

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2 Answers

Check secondry fuel pump

Posted on Oct 22, 2008

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  • Master
  • 372 Answers

Could be idle air control soleniod or air control valve. I assume is fuel injected....Whats year and engine and all that??

Posted on Aug 11, 2008

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