Question about 1996 Ford Ranger SuperCab

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I have a 1999 Ranger 4x4, 4.0 V6. I have a whistling noise at low idle or coasting. I have replaced the air intake sensor. This happens most of the time when the AC is running and it is hot.

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  • Anonymous Aug 17, 2008

    air idle control is the problem

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It could be several things, but if your engine run properly, no codes are being picked up, than I would lean to the air intake hose. Check all around the hose and air box to make sure there are no cracks that could be sucking in air. But if its not an air style whistling, and more of a mechanical whinning, than check the idler pulley, the tensioner pulley, and even the altenator or A/C compressor clutch.

Posted on Aug 01, 2008

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