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2000 Ford Expedition loss of power and backfiring

Tiny
SGUTIERREZ78
  • MEMBER
  • 2000 FORD EXPEDITION
  • 250,000 MILES
When I drive my 2000 Ford Expedition and I go faster than 55 mph the service engine light flashes and it backfires and loses power. What can be the problem? I already did the tune-up, changed the oil and changed the spark plugs and the wires, and the fuel filter.
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Wednesday, June 5th, 2013 AT 9:37 AM

1 Reply

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,885 POSTS
The first thing I would recommend is to have the computer scanned for trouble codes. If no codes show up, you will need to have an active scanner running when the problem occurs. If the light is flashing, that usually indicates a misfire. Since you already tuned it up with no change, I would have the scan done and check fuel pump pressure to make sure it is within spec.
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Wednesday, June 5th, 2013 AT 9:43 AM

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