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vehicle question (Mercury Mountaineer) Ford explorer eddie Bauer

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November 08, 2026, 08:51 PM
old rugged cross
vehicle question (Mercury Mountaineer) Ford explorer eddie Bauer
It is a 2010 AWD V8. 70K miles.
I am hearing a noise while underway. I do not believe it is a engine or tranny noise. I don't think it is a wheel bearing either. I am thinking it has something to do with the AWD. The vehicle runs great.
I can hear it at about 35 mph. It is a constant sound.
Any idea's.



"Practice like you want to play in the game"
November 08, 2026, 09:34 PM
P250UA5
No chamge with vehicle or engine speed?
Any difference turning left or right?




The Enemy's gate is down.
November 08, 2026, 09:40 PM
old rugged cross
quote:
Originally posted by P250UA5:
No chamge with vehicle or engine speed?
Any difference turning left or right?


Good question. A little louder at highway speed.
Nothing when turning or cornering.



"Practice like you want to play in the game"
November 09, 2026, 06:38 AM
P250UA5
IME, a wheel bearing typically get louder when loaded in a turn, but not always, and the noise tends to follow wheel speed.

Hopefully it's something simple for you




The Enemy's gate is down.
November 09, 2026, 07:30 AM
MRBTX
Maybe you can do a drain (suction) and fluid fill on the PTU (looks like a transfer case). This guy says do it every 30k.

https://youtu.be/sS9JPaf1MDg?is=ZnekDnoYOCgwpBve
November 09, 2026, 08:27 AM
sig2392
I had a Mercury Mountaineer and drove it a couple hundred thousand miles and never did that.

I junked it when they wanted more money to change the broken fuel pump than the book value of the car.

Sometimes I am sorry I didn't keep it.