Last year I had a rear differential replaced under warranty. All was OK until the other day I noticed that starting from 30MPH, I get a drone/howl noise from the rear. Since it was under one year parts/labor warranty, I took it back to the dealership for them to have a look.
Turns out one of the bolts wasn't torqued to spec, the service guy explained it to me, he said at the rear where the propeller shaft connects to the rear diff, there is a bolt that holds the crush plate (?) in place. There are two pinion bearings on each side, and since the bolt was loose, it was causing play in the joint. They took it apart and re-torqued everything.
My question, would this cause any possible damage to anything? The manager said the rear diff oil looked clean and no visible metals. I've driven about 12K miles since this was done the first time.
Also, on my drive home, everything seems to drive better, but the noise is a little worse now. Do you think it could be something else?
The noise starts at around 30MPH and is almost constant regardless of speed, in or out of gear or gas pedal. Above 40MPH I can't tell if it's there anymore since road/exhaust noise takes over.
Thanks.
Turns out one of the bolts wasn't torqued to spec, the service guy explained it to me, he said at the rear where the propeller shaft connects to the rear diff, there is a bolt that holds the crush plate (?) in place. There are two pinion bearings on each side, and since the bolt was loose, it was causing play in the joint. They took it apart and re-torqued everything.
My question, would this cause any possible damage to anything? The manager said the rear diff oil looked clean and no visible metals. I've driven about 12K miles since this was done the first time.
Also, on my drive home, everything seems to drive better, but the noise is a little worse now. Do you think it could be something else?
The noise starts at around 30MPH and is almost constant regardless of speed, in or out of gear or gas pedal. Above 40MPH I can't tell if it's there anymore since road/exhaust noise takes over.
Thanks.