medium pitch gear whine. ideas?

Joined
Jun 1, 2008
Messages
159
Location
Illinois Metro St Louis
Since I bought the truck there has been a what sounds like a gear whine. I am thinking that it is in the TC but not sure. The sound is not noticable at low speed ie. Under 35 but once above that you can hear it. It only makes the sound when there is a load on the the drivetrain. The pitch of the sound does not get higher or low but comes and goes with load. I have checked the fluids in th TC and front and rear diffs and all is good.

Any ideas greatly appreciated. The truck still drives great. Just an annoying sound.

Thanks
 

Vlad

The Impaler
SILVER Star
 
 
 
Joined
Feb 7, 2002
Messages
10,648
Location
Woodstock, GA
By checking the fluid did you dip your finger in the fill hole and look at color or drain and fill and inspect the magnetic trap to determine if you have any metal shavings?
 
Joined
Jun 1, 2008
Messages
159
Location
Illinois Metro St Louis
By checking the fluid did you dip your finger in the fill hole and look at color or drain and fill and inspect the magnetic trap to determine if you have any metal shavings?
Yes. All was good when checked. Fluid was a little dirty. Drained and refilled. No change in sound of whine. There was no metal shavings.
 
Joined
Aug 15, 2008
Messages
135
Location
Greenville, SC
Since I bought the truck there has been a what sounds like a gear whine. I am thinking that it is in the TC but not sure. The sound is not noticable at low speed ie. Under 35 but once above that you can hear it. It only makes the sound when there is a load on the the drivetrain. The pitch of the sound does not get higher or low but comes and goes with load. I have checked the fluids in th TC and front and rear diffs and all is good.

Any ideas greatly appreciated. The truck still drives great. Just an annoying sound.

Thanks
Mine does the same thing. I have changed all the fluids and it is still there. I think it might just been worn gears that have 150K on them. I think my noise is coming from the front diff, but I could be wrong. I am probably going to regear at some point, so it will be interesting to see if it is still there at that point.

For now, I have gotten use to the noise and put some BFG KM2's on. They drown out the gear whine a bit even though I consider them a quiet MT. So, my solution is to put on big tires and lift!
 
Joined
Jun 25, 2007
Messages
147
Location
puyallup, washington
i had a similar noise. at highway speeds 55+ there was a wine under load only. at least only noticeable under load. i found that my rear u-joint had small grooves in it barley noticeable. but it was enough to make the noise. after i replaced the u-joint the noise was gone.
 
Joined
Jun 1, 2008
Messages
159
Location
Illinois Metro St Louis
i had a similar noise. at highway speeds 55+ there was a wine under load only. at least only noticeable under load. i found that my rear u-joint had small grooves in it barley noticeable. but it was enough to make the noise. after i replaced the u-joint the noise was gone.
Thanks for the info. I will check on this this weekend.
 
Top Bottom