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Old 09-15-2009, 08:33 AM   #1
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Dunno about this noise, Tranny/front diff

I have a very odd noise coming from the front of the jeep that sounds like grinding in gears coming from the front of the jeep, I did notice that the transmission is leaking a bit but the noise continues even when it isn't in gear and we just had the tranny rebuilt so I'm hoping that isn't the origin of this noise. It sounds like its coming from the front of the jeep. I went under it yesterday and noticed there is a TON of play in the front driveshaft and I was wondering if this could be from maybe a chipped spider gear or a loose pinion because when the jeep is moving it sounds like a revolution noise, kind of a wee wee wee wee that gets louder and slower when the jeep slows down. Any ideas of how much more this will cost?

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Old 09-15-2009, 11:10 AM   #2
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Almost sounds like your describing "Angry Sparrows" which would be driveshaft u-joints.

You mention play in the u-joints, is there play near the axle pinion of play in the CV up near the T-case. usually the CV U-joints are the ones that go bad and need replacing thus causing the chirping "angry sparrow" noise.

You you grab the DS near the pinion is there play in the Joints or in the Pinion itself....
I would try grasping the DS at the ujoints at the pinion and see if you can move up & down or side to side to look for u-joitn play or pinion play and same for the CV up near the T-case

Chris

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Old 09-15-2009, 12:01 PM   #3
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I had the same problem and snwchris' analysis is exactly right, it ended up being the CV.
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