1999 Ford Expedition vibrations

1999 FORD EXPEDITION
171,000 MILES • 6 CYL • 2WD • AUTOMATIC
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DUTE15
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  • 2 POSTS
my expedition vibrates sometime real bad when i press on the gas. when it vibrates and i press on the gas harder it goes away or if i let up on the gas it goes away. its only when i get it up to say 35 mph will it happen-thanks
Mar 23, 2009 at 9:09 AM
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JACOBANDNICKOLAS
  • ✓Experienced Mechanic
  • 110,236 POSTS
Has the check engine light ever come on?
Apr 9, 2009 at 2:48 AM
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DUTE15
  • MEMBER
  • 2 POSTS
yes it has but doesnt stay on
Apr 9, 2009 at 3:13 AM
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JACOBANDNICKOLAS
  • ✓Experienced Mechanic
  • 110,236 POSTS
hi:
If the light was on, there will be a code in the computer. Most nationally recognized parts stores will scan it for free, so there is no money out of pocket. I recommend taking it to one and having them scan it. Chances are it will identify a random misfire, but it may be specific to one cylender. Then we will know what to check.

Let me know what you find.

Joe
Apr 9, 2009 at 1:33 PM
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