Hey folks, My truck stumbles when hard accelerating at52-55 mph or 1800 rpms it does not do it on soft or slow accelerating. I just put fuel injector cleaner in and I'm gonna clean my K&N filter out. Any help if this has happened to anybody! Thanks

 

If it stumbles under full throttle on a 3rd gen it's most likely the MAF. I would try cleaning it first. Do a search for cleaning the mass air flow sensor (MAF)-there should be plenty of reading.

 

Thanks I'll try to clean the MAF . I just took a 8 hr trip (4 there and 4back)
between 45 and 55 mph if I were to apply the gas (not even that hard ) it would stumble, but would seem to clear up after that. If I were to gradually apply gas it would not do it. Could it be a tps. seems like a dead spot or somthing. Thanks for the help folks!