Rear End Clunks After Changing Pinion Seal
07-24-2003, 08:19 PM
#1
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Rear End Clunks After Changing Pinion Seal
I took my '94 TA to the shop today to have a leaking pinion seal replaced and the rear end fluid changed. I got the car back and noticed that when rolling in reverse I'm getting loud clunks periodically that feels like the rear end gears are jamming and popping loose. When I hear the clunks i can feel the vibration through the car. I am not talking about the clunk that you hear when shifting from drive to reverse, this noise occurs when the car is rolling. This is an automatic 2.73 and the problem only seems to happen in reverse. What could the shop have done wrong? The only thing they had to do was disconnect the prop shaft from the differential case to change the seal, is there anything they could screw up that would cause a problem like i'm describing? Could changing the fluid cause problems to show up? I will take the car back to the shop, but does anyone have suggestions?
07-24-2003, 08:48 PM
#3
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I was just testing the car out again, and the clunking is also occuring when the car is rolling forward. Also the clunking only seems to happen when you let the engine idle in drive or reverse and let the car roll slowly. I have not notice any noise at higher speeds.
07-24-2003, 09:15 PM
#4
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Location: Little Rock, AR
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Originally posted by Brian-94TA
I was just testing the car out again, and the clunking is also occuring when the car is rolling forward. Also the clunking only seems to happen when you let the engine idle in drive or reverse and let the car roll slowly. I have not notice any noise at higher speeds.
I was just testing the car out again, and the clunking is also occuring when the car is rolling forward. Also the clunking only seems to happen when you let the engine idle in drive or reverse and let the car roll slowly. I have not notice any noise at higher speeds.
07-25-2003, 06:59 AM
#6
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I would say they didn't tighten the pinion nut up enough...
I've dealt with it before... sonds exactly like it...
but... they may have tightened it up adn it may have come loose, those are locknut's and aren't supossed to be reused... although sometimes you can get away with it. Normally I use them twice then replace them.
I've dealt with it before... sonds exactly like it...
but... they may have tightened it up adn it may have come loose, those are locknut's and aren't supossed to be reused... although sometimes you can get away with it. Normally I use them twice then replace them.
07-25-2003, 08:24 AM
#8
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If the pinion is actually loose, you could be in danger of busting up the gear set. The shop should look at it again.
LSA should not be a factor for noise when you are going straight (that's why I asked).
LSA should not be a factor for noise when you are going straight (that's why I asked).
07-25-2003, 10:34 AM
#9
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Originally posted by 96ZRide
Check with the shop to make sure they put some GM limited slip additive in the rear end when they added new oil.
Without it, you will experience some harsh sounds coming from the axle housing.
Check with the shop to make sure they put some GM limited slip additive in the rear end when they added new oil.
Without it, you will experience some harsh sounds coming from the axle housing.
-Dave
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