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Engine revving up, then down over and over 200

Start by cleaning the throttle body, Idle Air Control Valve, the flame trap, and all associated vacuum lines.
http://www.brickboard.com/FAQ/700-900/EnginePerformanceSymptoms.htm

Also check the large plastic hose between the AMM and throttle body for cracks (air leaks). Dan






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New Engine revving up, then down over and over [200]
posted by  Veralynn85  on Fri Jul 18 07:57 CST 2008 >


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