4WD knocking | Ford Explorer Forums - Serious Explorations

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4WD knocking

KLS232470

New Member
Joined
December 18, 2012
Messages
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City, State
California
Year, Model & Trim Level
2001 Ford Explorer Sport
Hello:

Do I just need to change the transfer case oil?

My 2001 4WD Ford Explorer Sport. When I go into 4WD, it will be running just fine and then about every 30 seconds there will be this hard jolt/knocking down in the case. A friend said to check the fluid and top it off. I read another thread that said changing the old fluid for new helped a lot of problems.

Any advise?

Thanks so much.

Ken
 






Did you check the fluid?
Did you change it?
Are you running in 4wd on dry road?
 






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