Question about 1994 Chevrolet S-10 Blazer

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Front differential making a winding noise and ends in a loud thump.

Will be driving down the road in 2 wheel drive under normal conditions and front differential or the front rearend will start making a winding noise almost like you are trying to force a manual shift transmission into gear without the clutch and eventually ends in a loud thump like the front end is going to come off the vehicle.

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  • Anonymous Mar 25, 2014

    scrunching noise of dips in road in the front end of the vehicle

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Sounds like you need your transfer case looked at and repaired.....that the only thing i can think of...hope it helps :)

Posted on Sep 30, 2008

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IF you are in constant 4wd then you will not have a centre diff unless you have an AWD. The difference is that AWD transfer cases have a centre diff that allows different road speeds between the front and rear diffs as in going over speed bumps and dips ion the road It is the same operation in the front and rear diffs that allow one wheel to go faster than the other when cornering. However in 4wd drive there is no diff action in the transfer case and both front and rear axles drive at the same speed regardless of speed bumps and dips in the road . This action produces what is known as torque wind up which results in the handling characteristics. This torque wind up places stress on all the drive line train and results in failures such as .that you describe.. This wind up is not noticeable when driving on loose surfaces slippery surfaces or in mud as it is allowed to escape when the wheels spin . If you have an AWD with diff lock capabilities then check that the diff lock is operating correctly

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AS ALWAYS. Loud noise coming from front differential.


Have you change the differential fluid? If not,That's a good place to start.If you have, you may need to repack or replace the wheel bearings.

Also,The front wheels are acting normal,That is what happens with a limited slip differential.

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