Front Diff Going Bad?
#1
Front Diff Going Bad?
Alright, I've made it through a significant portion of the 60k service plan, having changed all driveline fluids and rebuilt the driveshafts. All were in pretty decent shape except the front diff fluid....it was awful....a thick, sludgy black. Anyways, am having this whine that increases with speed, independent of motor rpm, gear change, etc. At first I thought that changing the diff fluid would solve it...nope. Maybe the transfer case?...nope. Transmission?....nope. So I'm now beginning to wonder if it's a bearing/s in the front diff. Here's what it does:
1) Increasing with speed, the whine grows. At 70mph, it dominates the cabin and I can even slightly feel it in the steering wheel and gas pedal.
2) If I let off the gas and remove the driveline load, the noise and vibration go away
How do I inspect the front diff to see if it is the culprit? Or, am I completely wrong on the source of this noise?
1) Increasing with speed, the whine grows. At 70mph, it dominates the cabin and I can even slightly feel it in the steering wheel and gas pedal.
2) If I let off the gas and remove the driveline load, the noise and vibration go away
How do I inspect the front diff to see if it is the culprit? Or, am I completely wrong on the source of this noise?
#3
#5
Sorry for the slow response...silly work keeping me busy...
When I changed the front diff, there were normal fine metal shavings, no chunks.
I rebuilt the front driveshaft just this weekend, centering ball and all. When I did it, I greased the joints prior to install, after install, and then yesterday...just in case.
I used 80w-90 gear oil.
When I changed the front diff, there were normal fine metal shavings, no chunks.
I rebuilt the front driveshaft just this weekend, centering ball and all. When I did it, I greased the joints prior to install, after install, and then yesterday...just in case.
I used 80w-90 gear oil.
#6
#7
#10
Alright, I have yet to get around to doing these recommended things. However, tonight I took my wife for a ride to have her help identify the audible source. When sitting in the back driver side seat, she felt like the sound was coming from just behind/underneath her...rear left hub I'm thinking. Could a hub make this noise and then stop when I let off the gas?