F150 acceleration issue
375

Asked by rwk87 Oct 05, 2018 at 06:18 PM about the 2004 Ford F-150 XLT

Question type: General

Had the timing chains, guides, tensioners and some of the O2 sensors replaced. Idles great but when you try to accelerate it bogs down. Any thoughts?

7 Answers
103,085

KenF answered 6 years ago

Too many reasons to suggest any single solution, but assuming it's not anything simple like a dirty throttle body, or TPS, MAF, PCV or EGR, it may be something related to the recent work, such as timing, cam phasers, coil on plugs (COPs), VCT solenoids, or additional O2 sensors. Are there any other OBD codes?

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F_O_R answered 6 years ago

Fix the misfire then. Possible bad coil. Bogging can also be a bad catalytic converter. Misfires can make a cat go bad.

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103,085

KenF answered 6 years ago

They should try and reset the ECM, or reflash with updates.

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375

rwk87 answered 6 years ago

All work has been completed and still getting random codes. Mechanic is now ordering a new computer/ECM. I pray this fixes it or I will sitting on a very large paper weight.

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375

rwk87 answered 6 years ago

New ECM and still won't get out of it's own way. upper and lower intake gaskets?

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