I have a 2007 F150 with a 4.6l. The other day while driving all of a sudden the engine started to vibrate real bad and act like it was bogging down every time I would hit the gas.I changed the Fuel filter,and the Plugs. Still doing it.It starts and idles fine, it is only when I give it any gas that it boggs really bad.There is no check engine light on and the Cpu at Autozone picked up nothing.Any Ideas would be helpful......................



Thanks


Mike

 

Sounds as if it's a throttle body problem. That would be my first guess.

Was it doing the exact same thing before you changed the plugs?

 

did not change a thing.

 

Then I would try cleaning the throttle body and see if it helps.

 

And shoot the MAF sensor with MAF cleaner

 

That certainly won't hurt a thing, but if it is idleing ok, I doubt the MAF is causing his problem.

 

Could be clogged cats.