Differential Fluid Replaced -- Problem???
Thread Starter
Melting Slicks
Joined: May 2000
Posts: 3,280
Likes: 0
From: Virginia Beach Virginia
Differential Fluid Replaced -- Problem???
I bought 2 Qts. of Mobil 1 75W-90 Synthetic Differential Fluid and the GM Positraction Additive this morning and drove to a small, local shop and had them replace my Differential fluids.
Now, my Vette's differential clunks as badly (maybe worse) as it did before I replaced the fluids. Does anyone have any idea why this could be? I need to adjust my timing/carburetor because my engine races (1300 RPM at idle) and I know contributes to the clunking.
Other factors that might help.
-ZZZ crate engine 20K miles
-Original Tranny, Differential
-Auto 3.08 gears
Thanks for all of your help.
Now, my Vette's differential clunks as badly (maybe worse) as it did before I replaced the fluids. Does anyone have any idea why this could be? I need to adjust my timing/carburetor because my engine races (1300 RPM at idle) and I know contributes to the clunking.
Other factors that might help.
-ZZZ crate engine 20K miles
-Original Tranny, Differential
-Auto 3.08 gears
Thanks for all of your help.
Le Mans Master
Joined: Feb 1999
Posts: 8,351
Likes: 75
From: Tampa Bay FL
Re: Differential Fluid Replaced -- Problem??? (VolVette)
Clearly the high idle is contributing to the clunk. If original driveline, it may be time to consider replacement of u-joints and rebuild of rear diff.
