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Loses power when put into gear but idles perfectly

Tiny
GREG FRAGODT
  • MEMBER
  • 2000 FORD EXPEDITION
  • 5.4L
  • V8
  • 4WD
  • AUTOMATIC
  • 190,000 MILES
Loses power (hesitates badly) when put into gear trying to move forward, but idles perfectly. If I was describing the problem on a Chevrolet it would be the vacuum advance line was disconnected. Any ideas where the equivalent on a Ford 5.4 Liter, Triton would be? Could it be a possible fuse issue?
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Sunday, August 26th, 2018 AT 3:59 PM

1 Reply

Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
Good morning.

No, that was a long time ago. Those days are gone. timing is done through the PCM.

No to the fuse.

With low power, the first thing I always look at is filters. Check the air and fuel filter, in fact, replace them.

Beyond that, I would check the fuel pressure to be sure there is enough pressure to run the injector needs for fueling the engine.

Catatlytic converters being clogged are a possibility as well.

Are there any codes stored?

Roy

https://www.2carpros.com/articles/engine-has-low-power-output

https://www.2carpros.com/articles/how-to-test-a-catalytic-converter

https://www.2carpros.com/articles/how-to-check-fuel-system-pressure-and-regulator
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Monday, August 27th, 2018 AT 2:54 AM

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