97 f150 4x4 chirpping when accelerating

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10-03-2008, 02:11 PM

SebagoLow

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97 f150 4x4 chirpping when accelerating

My 97 f150 4x4 chirps from ~1-25MPH. The chirp increases with speed but then cuts off around 25. Sounds like its coming from the rear of the truck. Any ideas?

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10-03-2008, 08:17 PM

glc

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U-joints.

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10-03-2008, 10:19 PM

fordmerc

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I had the same problem on my wifes 02 mountaineer, and it was the brand new pinion seal I had just put in. Does it only do it after it has been driven for a while?? Just a thought.

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