why does my 04 F150 run sluggish at full throttle

mailmanshears · #1 Jan 17, 2009, 06:51 PM

when i step down on the gas you can feel the transmission shifting through the gears, but the power in the engine is not there. The power does not jump out there it gradually builds, and when i take off from a dead stop the engine will shake a little like it is missing and the wrench like comes on. the check engine light is on and i have been told that it is the throttle body. I took the air cleaner out and took the air induction off of the top of the throttle body and when i would give it the gas it would run rough and as soon as i would let off of the gas it would quit. As soon as i put the air induction and the air filter back in it would run ok, but as soon as i would get it back out on the road and get on it, it would gradually get up to speed. went to advance auto to have a computer put on it and he said that my hook up wasn't working so i am trying to figure that out also

Majoria · Feb 3, 2009, 04:12 PM

It's a known issue, common codes are P2106 and P2135, sometimes P2105 or something else. Ford has a TSB (technical service bulletin) for the P2106 and P2135 codes which involve the wrench light and check engine light. It may temporarily resolve itself by cycling the key but no promises there. I'd call a Ford dealer if I were you, they should be familiar with the issue.



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