Whining from driveshaft/rear diff - Ranger-Forums - The Ultimate Ford Ranger Resource


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Old 01-12-2016
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Whining from driveshaft/rear diff

Morning after a 3+ hour drive truck started to make whining noises. Noise comes from driveshaft area, towards the back near the diff. Sound is at any speed/gear, gets higher pitched the faster the shaft spins. I will try to upload a video of it.

Last edited by TUDecathlete10; 01-12-2016 at 10:19 PM.
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Old 01-13-2016
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Could just be very low on fluid?

I would drain the differential fluid and have a look at it, see if there are metal filings in there, and remove cover to visually inspect parts and to change the gasket.

U-joints will make a clunking sound when there is a speed changed and I didn't hear that.

wheel/axle bearing going out would usually be louder on one side and you didn't mention that.
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Old 06-08-2016
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I'm having the same issue in mine.
What would make the differential fluid run low? I'm not very mechanically inclined, so I will probably have to take mine to a mechanic, and I would kind of like to have an idea of what's going on before I get in there.
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Old 06-17-2016
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I had someone check my rear diff, and the fluid was a little low, but not bad, but the seal between the rear diff and the U joint was blown out, so I still need to take it to a mechanic...
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