Question about Ford F-150

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Sometimes while driving around 50 mph a grinding noise can be heard in the back for close to a minute then it goes away but when the noise is present the 4wd and 4wd low lights come on. When the noise goes away the lights go away too. The truck has a manual 4wd.

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I would suggest taking your truck to a shop where it can be put up on a hoist and run and then checked with a styascope.
Bill

Posted on Nov 19, 2008

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6ya6ya
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Posted on Jan 02, 2017

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Hi James,
The grinding noises suggest to me that your brake pads have worn away, giving you metal to metal contact between the pad backing plates and the brake disc.

Can you explain more what you mean by "just revs when driving in 5th gear at 50 mph" ?

If this suggestion solves the problem, please give my reply a rating to help others judge my solutions. If it does not, please give me more details so I can try to help you further. Cheers, D

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