My Mountaineer has a vibration under the pedal.

Tiny
ANONYMOUS
  • 1999 MERCURY MOUNTAINEER
  • 140,000 MILES

My mountaineer has a vibration under the pedal through the floorboards, it only happens once I hit about 58 mph. It gets louder the faster I go, until I get to about 65 mph. Then it quits down a little but does'nt go away until I slow back under 58 mph. I checked and filled the gear lube in the front diff. It was low because I have a slow leak through th rear seal. Does'nt leak bad just about half pint in over a couple years. My driveshaft looks straight and can't see any wieghts missing. And now about one week after it started there is a slight clunk like a cracking kind of noise and you can feel it as you drive. Does anyone have any ideas?

Tuesday, October 30th, 2012 AT 6:40 PM

1 Reply

Tiny
HMAC300
  • EXPERT
  • 47,000 POSTS

Have your rear driveshaft ujoints checked, they may be worn and that is where vibration for that type of thing is.

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Tuesday, October 30th, 2012 AT 7:19 PM

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