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2000 Toyota 4Runner Rough Engine Performance over 55 mph

Tiny
PEROXIDE
  • MEMBER
  • 2000 TOYOTA 4RUNNER
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 160,000 MILES
My engine starts to vibrate slightly and make a loud humming noise when the car accelerates over 55 mph, and sounds as if I'm driving on corrugated pavement. If I let off the gas petal and coast, the problem disappears. The problem started 2,000 miles after I had the air flow sensor replaced. Does this sound like a fuel filter problem?
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Wednesday, April 1st, 2009 AT 1:37 PM

1 Reply

Tiny
DOCFIXIT
  • MECHANIC
  • 18,828 POSTS
Is there any engine vibration in park and you bring up rpms to @ 2000? If no the problem maybe torque convertor. Try puttting in D3 keep out of overdrive see if noise goes away.
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Wednesday, April 1st, 2009 AT 2:44 PM

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