Whine in differential

[Mike Wild]

When I accelerate in my 2000 Marquis, there is a consistent, constant whine from the differential. Take the load off and it stops immediately. The whine is not overly loud, but certainly easy to hear. Normal? Any ideas?

Mike

[Dave Atherton]

Mike, in checking your differential for gear lube level and feeling nose cone where
u-joint connects for heat build up and if everything is ok. Next step check your
short drive line  u-joints for heat and dry on grease. It sounds like you have a u-joint cup
'bearing that is dry. Last look at your short drive line and your ride height angle.
Dave Atherton Retired Cat Mechanic

[Mike Wild]

Thanks Dave. Appreciate the help.