Ford Excursion:

Knocking sound from rear differential

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# 1  7/25/2010 2:18 PM

ron
New member
Registered: 7/25/2010
Posts: 2

Knocking sound from rear differential

I have a knocking sound coming from my rear dif only on take off in my 2000 excursion what is going wrong?

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# 2  7/25/2010 4:03 PM

TechHelp2
Administrator
Registered: 11/24/2009
Posts: 1299

Re: Knocking sound from rear differential

The knocking sound could be a broken gear tooth on one of the gears in the differential, a bad universal joint (or velocity joint if equipped), or even a bad bearing.

Removing the rear cover and making a visual inspection should be done, just to see if there are any metal filings in the gear oil.

These hints are just a start. If you need further help, please send us more detailed information on your vehicle.

Let us know how you make out.


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