1998 Ford Expedition running bad

1998 FORD EXPEDITION
112,000 MILES • V8 • 4WD • AUTOMATIC
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TAILITE
  • MEMBER
  • 2 POSTS
it runs good when cold but warm it takes off slow like its miss in it then it takes off but when u let off the gas then get on it agin it missis i had advance auto scan it it keeps reading air gas mettring put now ones what tht is i have change the mas air
Feb 13, 2009 at 12:27 AM
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JACOBANDNICKOLAS
  • ✓Experienced Mechanic
  • 110,248 POSTS
Hi:
It sounds like a weak or bad coil pack. Hs the light come on again? Also, have you ever checked fuel pump pressure?
Feb 13, 2009 at 11:16 AM
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TAILITE
  • MEMBER
  • 2 POSTS
i changed both coils havent check the fuel yet i will try thanks
Feb 15, 2009 at 6:28 AM
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