Question about Ford F-150

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1997 Ford F150 4x4 5.4L

Upon accelerating and when going between 10-15 mph the engine bogs down, or loses power. It regains power when I remove my foot from the gas and the re accelerate. Already replaced the fuel pump, fuel filter and spark plugs. Runs fine otherwise. Any suggestions?

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I would take the truck to an autoparts store and have the fault codes retrieved from the computer. Most stores will do the scan for free. I would lean toward a faulty throttle position sensor, but that's just speculation. The fault codes should narrow the problem down. Hope this helped and best wishes.

Posted on Jul 25, 2009

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