Question about 1999 Jeep Grand Cherokee

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Whistling can not find any vacuum leaks if you accelerate the whistling goes away

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Sounds silly, but you can easily trace the source of the noise by taking a short piece of garden or heater hose, putting one end to your ear and using the opposite end as a probe. It works like a directional microphone and will lead you right to the noise source!! At higher rpm's the noise likely does not go away, but becomes hypersonic and beyond your hearing range.

Posted on Jul 26, 2009

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