Thanks for the post! I went through the clogged cats deal after a coil pack went bad and unburnt gas poored into the exhaust. It's a totally diff experiance this time round, but it is fixed now! It was a bad MAF sensor that the diagnostic computers didn't read as bad. Thanks again!
this problem happened to 2 of my buddies both had 5.4 v8 4x4 the one truck had clogged cat converters and the other truck had a electrical or sensor issue so it could be any of those two things. both trucks had under 70,000 miles when this happened.
Hi, I have the exact same problem! High rpm and full throttle no power, it hits 5000 rpm...no go! My trans was just rebuit because of a o/d snap ring snapping. It started after my trans was done!? Had it rebuit by a diff shop...still doing it! I'm going crazy over this! I will let u know what it is if I EVER figure this out? Please do the same. Thanks and good luck!