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Post Info TOPIC: Vibration on decel


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Vibration on decel


I think it's a U-Joint, but I want more opinions before I go ripping it apart. When I am on the highway, it has a slight vibration, but when I decel, you can really feel it. Then when I get back on the gas, it 'clunks' a bit, not audible, but I can feel the 'bump'. This is in the Explorer, AWD.

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89 GT 306,Vortech SC-Trim,GT40P heads,Cobra Intake,65mm FRPP TB, 42lb Injectors,PMAS MAF,190lph pump,E303,Crane Adj. 1.6 RR's,FRPP Headers,Pype's X-Pipe,Magnaflow cat-back,Spec Stg II Clutch,Tremec 3550 w/Pro 5.0 shifter,FRPP Alum. Driveshaft,3.55's.


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check rear end pinion play when the driveshaft is out

-- Edited by mikefheath87 at 17:34, 2008-08-04

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doubt your going to find any play in the pinion . if its an explorer 02 or newer with awd. its most likey your u joints. and also big issues are the slip joint or yoke that goes into the trans. you will have to un bolt it and use a puller to remove it from the trans. and on the spline put teflon grease on them. and reinstall.

If it is a pinion concern. when you tip in on the gas at 40mph or 50mph you will hear a humm noise for a little.

another thing I always see is transfer cases binding up cause by dirty fluid. you will have to change it and drive it a few times and keep changing it until vibration is gone. But that would feel more like a binging feeling and will cause banging noises.

also check and make sure the tires are not worn out more than 1" of each other. that will cause a vibration on those vehicles. you can check that by measuring around the center of the tires with a tape measure.

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Pitbull11 wrote:

doubt your going to find any play in the pinion . if its an explorer 02 or newer with awd. its most likey your u joints. and also big issues are the slip joint or yoke that goes into the trans. you will have to un bolt it and use a puller to remove it from the trans. and on the spline put teflon grease on them. and reinstall.

If it is a pinion concern. when you tip in on the gas at 40mph or 50mph you will hear a humm noise for a little.

another thing I always see is transfer cases binding up cause by dirty fluid. you will have to change it and drive it a few times and keep changing it until vibration is gone. But that would feel more like a binging feeling and will cause banging noises.

also check and make sure the tires are not worn out more than 1" of each other. that will cause a vibration on those vehicles. you can check that by measuring around the center of the tires with a tape measure.






Yeah,it's an '04. I'll be sure to grease the yoke (hehe). I got a bunch of Mercon V for the trans, I need to get some stuff for the diffs and xfer case too.

Thanks for the info.

__________________
89 GT 306,Vortech SC-Trim,GT40P heads,Cobra Intake,65mm FRPP TB, 42lb Injectors,PMAS MAF,190lph pump,E303,Crane Adj. 1.6 RR's,FRPP Headers,Pype's X-Pipe,Magnaflow cat-back,Spec Stg II Clutch,Tremec 3550 w/Pro 5.0 shifter,FRPP Alum. Driveshaft,3.55's.
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