I have a 2000 Dodge Durango with 92,500 miles on it. The rear pinion seal was leaking so I took it in and they replaced the pinion seal and flange because it had a scratch in it. This weekend was the first time I had driven it since they replaced the seal. With less than 175 miles on it, the rear differential started whining loudly while I was driving on the interstate. It starts out with a low pitch at slower speeds and high pitch at interstate speeds. At interstate speeds if I coast the sounds diminishes. I took it back in the morning and said they didn't cause the problem because it's torqued properly. You need to take it to a rear end place to get it fixed.
I believe they didn't do something correctly and have caused the problem. The manager wants me to show him what was done incorrectly and he'd fix it.
I have an appointment tomorrow to get a quote from a place that works on differentials to have them pin point the exact problem.
Thought or opinions?

Thanks
Denny

 

Check your work order to see if they replaced the crush sleeve! From what I have read that goes hand in hand with the replacement of the pinion seal. It has to do with pre load.

 

No, they didn't replace the crush sleeve!

 

I would call the manager and ask them what they plan to do to fix it the correct way for no additional charge!

 

what kind of damage can be done if a noise like this is heard? I'm not too sure if there has been diff work done on my truck before me, but I hear the same whining noise when your on the gas pedal, then nothing when you coast, as dcwehw99 in my D. I haven't torn the diff apart to look to see what could be making the noise, but was also wondering what could be done to possible check, and correct the noise. Also wondering what could be done in terms of damage in the long run.

 

i had the same noises from my truck awhile ago... thought it was the differential so i had a friend of my uncles who rebuilds them for a living come look at it. We tore it all apart and he found that everything was normal in there and told me that it was coming from somewhere else. I chased it for 2 years and found that it turned out to be a bearing within the transfer case. My uncles buddy told me that if someone removed the drive line and didn't mark how it came out and put it back in wrong it could be out of balance and put a strain on the TC bearings and cause them to whine.. So as far as what it cause, i drove mine 2 years and nothing happend but the fact that i got used to the whine... not saying you should let it go but, in my case i had time.

 

Sweet, thanx for the reply! That would make sense, and I can't tell you when anything has been done on this truck aside from the new parts on the chassis that we put in and the fluid changes on anything that holds fluid, diffs included, no visible wear when we were in the diffs either..(bought it at an insurance auction). As luck would have it tho, I have a new TC bearing set sitting in wait from the last TC rebuild on another D (bought 2 just incase). I've already gotten used to the whine tho, plus I have subs in the truck, so I don't hear much of anything aside from my music :P If and when it decides to go, I have the parts sitting, waiting.

Sorry to thread jack dcwehw99