1997 Ford Explorer AWD Logo
Posted on Mar 30, 2010
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While in drive, hear clunking and grinding from front differential and axles chatter and hardly spin, drivers side chatters,passenger side spins, put in park, then back in drive and then passenger side chatters and drivers side spins

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  • Posted on Mar 30, 2010
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Joined: Mar 12, 2010
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It sounds like your limited slip differential is in need of a fluid change.
The clutch packs in the axle require a special friction modifier,about 4 ounces added to the axle lube,which fixes the chattering issue.
I'd suggest someone drop the axle diff cover and check or change the
fluid,to see if there are any big metal pcs. in there. If there is no damage,drain the diff fluid and add the friction modifier,only if a SLD..

Note: Only add the friction modifier,if you have a limited slip differential.
Since I can't physically see your vehicle,make sure a mechanic does
it right.

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Sounds like you have snapped the Pin in the front pumpkin or a gear has broken. Is their any clunking up front when in 2wd?
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2000 Subaru outback manual transmission makes a popping grinding sound in first gear.

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No, even a 4x4 will have only 1 wheel that will spin on each axle in this instance. It's called a floating differential. For stock vehicles with non locking differentials like you have, both cannot spin or have full power at the same time. Hard to explain on this, but picture your car making a hard right turn. Both front wheels would be spinning at different speeds because of the turn. The passenger side tire is spinning much slower than the drivers side tire, therefore if both were spinning at the same time, your tires would chirp and skip on the pavement which would eventually ruin your differential. In offroad applications, we WANT the differentials locked and turning at the same time with true 4x4. But in normal everyday vehicles, even standard stock 4x4's, only 1 tire will do the spinning per axle unless it has possitraction or full locked axle. Clear as snow?
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I just drove my 97 gmc 3500 and there is a grinding sound in the drivers side wheel well. It has new brake pads. So thats not it. Its a metal grinding. Could it have something to do with the front axle?...

Try jacking the front driver's side of the truck and support it on a jack stand. Give the wheel a spin and listen closely. It may help you locate the source of the sound. I wouldn't rule out the brakes just because they're new. If you still hear the noise, it may be the wheel bearing. If you hear nothing, it may be the front differential if the truck is equipped with 4WD. Hopefully, it is only a low fluid level.
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Changing seals onfront diferentil half axles on 97 chavy astro

Its a long procedure.

Go through the related help links,similar to your issue:---
Click the link below:---
How to remove Front differential? http://howtobyme.blogspot.com/2012/01/how-to-remove-front-differential.html

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Timing Belt, Cover, Sprockets, & Seal replacing ? http://technoanswers.blogspot.in/2012/02/timing-belt-cover-sprockets-seal.html

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Crankshaft Front Seal? http://schematicsdiagram.blogspot.com/2011/12/crankshaft-front-seal.html

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Rear Main Seal Leaking? http://whatisbyme.blogspot.in/2012/05/2003-lexus-rx300-rear-main-seal-leaking.html

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Differential Chatters? http://whatisbyme.blogspot.in/2012/04/1996-toyota-prado-differential-chatters.html

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4x4 front differential will not engage the axle? http://technoanswers.blogspot.in/2012/02/4x4-front-differential-will-not-engage.html

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CV AXLE stuck in Transmission? http://technoanswers.blogspot.in/2012/04/cv-axle-stuck-in-transmission.html

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These will help.For more help,keep updated.Thanks.
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The two symptoms you posted may or may not be related. I'd check the driveshaft and axle joints for any looseness or binding. (do this with the rear wheels hanging free in neutral, front wheels blocked)
The chattering may be an axle joint or the posi unit in the differential. Most times replacing the diff lube, (using posi additive) then making tight left and right circles will free the clutch packs.
Difficult to diagnose noises online. If you have any problems finding the source, have an experienced tech look at it,,,You still have the option of actually doing the work itself.
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