Whining Noise
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Rock Crawling
Joined: Sep 2013
Posts: 318
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From: Charleston, SC
Whining Noise
I have a whining noise when I get up to about 30mph. If I let my foot off of the gas it stops. I thought it was the alternator but if it is in neutral and I bring the rpms up it doesn't make any noise. Does anyone know what could be causing this?
Recovery Vehicle
Joined: Nov 2011
Posts: 1,140
Likes: 115
From: Traverse City, MI
No 2 cents to add to the conversation... just wanted to tell you that I like your signature line. It's so true..
Rock Crawling
Joined: Dec 2006
Posts: 294
Likes: 5
From:
If it has 190000 miles on it and it has never been changed, I would start there.
There are two plugs on each differential, one is a drain, the other is a fill. The drain plugs are at the bottom of the diffs and the fill plugs on the front and rear diffs are pretty obvious on the face of the diff about half way up the diff.
You can always take out the fill plug and see if you can touch any fluid when you stick your finger in the hole. You might also be able to tell how dirty the fluid is.
The center diff is a little more difficult to find the fill plug, and quite a bit harder to get to. Filling it will require a fluid pump of some sort. I just used a simple vacuum based fluid filler. It sort of looks a bit like a grease gun without the handle. You can put the hose down into a fluid and then pull on a plunger, which sucks fluid up into the canister body. You can then insert the hose into the fill plug hole and push the plunger to put the fluid into the diff.
I used heavy duty synthetic fluid in mine.
There are two plugs on each differential, one is a drain, the other is a fill. The drain plugs are at the bottom of the diffs and the fill plugs on the front and rear diffs are pretty obvious on the face of the diff about half way up the diff.
You can always take out the fill plug and see if you can touch any fluid when you stick your finger in the hole. You might also be able to tell how dirty the fluid is.
The center diff is a little more difficult to find the fill plug, and quite a bit harder to get to. Filling it will require a fluid pump of some sort. I just used a simple vacuum based fluid filler. It sort of looks a bit like a grease gun without the handle. You can put the hose down into a fluid and then pull on a plunger, which sucks fluid up into the canister body. You can then insert the hose into the fill plug hole and push the plunger to put the fluid into the diff.
I used heavy duty synthetic fluid in mine.
Rock Crawling
Joined: Dec 2006
Posts: 294
Likes: 5
From:
Without hearing the noise, it's pretty hard to say. Since you said it doesn't happen when in park, it makes me think it is a driveline noise of some type. It could be differentials, could be a wheel bearing, or it could be something entirely different.
Checking the differentials for fluid is pretty easy and if you've never changed the fluids in them, it's a pretty safe bet no one else has in a long time. Most people just drive cars until something breaks, rather than performing the appropriate preventative maintenance.
Checking the differentials for fluid is pretty easy and if you've never changed the fluids in them, it's a pretty safe bet no one else has in a long time. Most people just drive cars until something breaks, rather than performing the appropriate preventative maintenance.
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