Question about 2003 Mercury Mountaineer

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2003 Mercury Mountaineer

I have a thrumming noise coming from the air intake area. It is most noticeable while idling. Does anyone have a solution? It is driving my
wife crazy! Thanks, Frank

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  • Gary Willard Oct 29, 2008

    I have the same problem. It sounds like a valve shuttering or a gargling noise, coming from inside the top of the intake, right where the air intake hose screws onto the throttle body intake port. ?????

    Anyone have any ideas?


  • frankhank1 Dec 02, 2008

    Potentially a fixya solution. I haven't been able to try what you suggested, but hope to in the near future. I really appreciate the help. Frank

  • anwsers1451
    anwsers1451 Jan 10, 2012

    i have a 2001 gran marc ,started doing the same at start up, and will continue with noise and rpm changes till engine warm, or about 10 min, then its fine till next time, you start from cold start??it sounds like something vibrating,up in the air inlet hose towards the carb. its very loud with the filter box open. dont have a clue??

  • Anonymous Mar 31, 2014

    Noise from front drive shaft area. U joints are good and does not do it all the time. More noticeable on accel.



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First Examine the air intake tube( the big black one).there are two silencer chambers on it-one on the side by the elbow and one underneath. I f either one is missing, when the Idle Air Controller (IAC) opens to compensate for the A/C compressor cycling it will make a gurgling/thrumming/roaring sound. if this does not fix it, check around intake/throttle body for loose connections.

Posted on Nov 30, 2008


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