Truck falls on its face under hard acceleration!

[TheBAT]

Hey guys,
I have 1996 F350 crew cab four by four. It has 203,000 miles on it with an automatic trans. Within the last couple of days the truck has become extremely sluggish, especially under hard acceleration. If I stomp on it, it doesn't kick down and go, it kind of crawls up to speed, this really shows on a steep hill. I checked the oil level and it's fine, the fuel filter has about 7000 miles on it. HELP PLEASE!

Kev

[Performance Oil Products]

is the trans slipping? Maybe a torque converter problem?

Smoking? any other odd things it's doing.

[cleaco]

Same problem that I,m having with my new 97 that I just bought,174,000miles.Starts and Idles well,cruises just fine.But, will not get out of its own way on take off,help!

[SCUFFY828]

run a fuel pressure test , should be 55 minimum, under load it can reach 100lbs , if its not got fuel pressure it will cause your concern , and also exhaust back pressure valve on 94-97 models would stick shut even in warm weather and cause low power

[TheBAT]

found out what it was! when I installed my downpipe, I accidentally bumped my map sensor vacuum line. Got it plugged in and now it runs like a champ.

Thanks guys,
Kev