Question about 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
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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Posted on Jan 02, 2017
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