Gear Howl When Decelerating
Thread Starter
Teching In
Joined: Jul 2005
Posts: 11
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From: USA
Gear Howl When Decelerating My whole rear end seems to make a clunk/whine/howl noise ONLY while decelerating.
-Both the car and factory rear end have 74K on them.
-I just bought this car not too long ago and according to the seller, he was using RP 75W-90 in the Diff (I'm assuming he installed the RP somewhere after the 500M break-in period...so it's probably almost 4yrs old)
-I recently checked the Diff Fluid and it was both full and clean looking. However I noticed signs of an old seal leak possibly (Hasn't leaked since I bought it 4K M ago)
-Car has only scene the drag strip 3 times (in late 2001).
Any idea's on what would cause this? I have read that it could be a loosened pinion-bearing preload...
-Both the car and factory rear end have 74K on them.
-I just bought this car not too long ago and according to the seller, he was using RP 75W-90 in the Diff (I'm assuming he installed the RP somewhere after the 500M break-in period...so it's probably almost 4yrs old)
-I recently checked the Diff Fluid and it was both full and clean looking. However I noticed signs of an old seal leak possibly (Hasn't leaked since I bought it 4K M ago)
-Car has only scene the drag strip 3 times (in late 2001).
Any idea's on what would cause this? I have read that it could be a loosened pinion-bearing preload...
sure does sound like a loose pinion nut. your going to have to take out the drive shaft, and check the pinion for play (side to side) and if you have a inch pound torque wrench (dial type) pre-load should be about 20-25 inch pounds. But if the crush sleeve is over crushed it's not going to work. If you have never worked on a rear end you might want to take it to a shop. It does get kind of technical some times.....
A U-joint doesn't have any play in it.
You won't be able to check the pinion preload unless you almost totally disassemble the rear. Carrier / axles need to be out. Take it somewhere that specializes in rear axles and have it looked at.
You won't be able to check the pinion preload unless you almost totally disassemble the rear. Carrier / axles need to be out. Take it somewhere that specializes in rear axles and have it looked at.
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