Mechanics

MERCURY MOUNTAINEER DIFFERENTIAL PROBLEM

2002 Mercury Mountaineer • 117,000 miles

Hello,

I have noticed on my mountaineer (AWD-V8-117k) that sometimes when I accelerate. Mostly going 35 mph+ I get a "slight" jerk that sounds like it may be coming from the rear end. It only happens intermittently when I let off the gas, then press on it. The car shifts just fine so not a tranny issue but what about the rear differential? Is it typical or normal? Or could the fluid be bad causing this? Like I said, it's not like it SLAMS but there's that slight jerk I can feel.
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Mbullion
December 4, 2012.




Also, one more question.I am having the upper control arms replaced on the vehicle. Will this require an alignment? My mechanic's book said only 91-94 ford explorers require it after replacing upper CA.

Tiny
Mbullion
Dec 4, 2012.


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