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Old 02-15-2013, 07:34 PM   #1
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thud sound when gas pedal pressed

2006 4.0 4spd auto. Sometimes after I let off the gas,coast, and then re gas it, there's a thud or conk that comes from the rear (I think). Is it my differential or pinion?

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Old 02-15-2013, 07:49 PM   #2
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Probably your u-joint?

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Old 02-15-2013, 07:51 PM   #3
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No a bad ujoint or dry one tends to screech or squeal. U could try putting grade in it tho to lube it
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Old 02-15-2013, 08:04 PM   #4
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I was thinking that the pinion or dif could be worn down. I'll check my ujoints,it has 76000k btw
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