loss of power help
 

hi everyone i have a major problem i have a 1997 ford f 450 2 wheel drive. i have barly any power that empty the truck has a hard time going over 45 mph. this has occured over the past year or so i think i have owned the truck for over 4 years and i am a fanatic with maintnance. i have changed the fuel pump fuel filter air filter put a scanner on it and done all the checks a buz test for the injectiors and the complete test while running multiple times. the truck does not show any codes. and i am completly lost if anyone can help me i would greatly appreciate it thanks
pete

the catylitic converters get pretty stopped up and cut down on power... but change the fuel filter... and drain the water... and maybe you just got some bad fuel... i have done this 2 times in the past month... idk i was just throwing some suggestions out there...

Check the EBPV on the turbo to see if it is working.

Make sure the ebpv is not stuck closed. Unplug it and verify it is open.

do u guys know where the ebpv is and the best way to check it i disconnected the mapp sensor i think it was ab ove the air box and it runs better with a check engine light

Pretty sure you need a new MAP sensor. and here is the connector of the EBPV.
https://www.ford-trucks.com/forums/a...tid=6599&stc=1

Welcome to FTE, I agree with ^^Jose^^. Look for a hole or crack in the rubber line going to the MAP sensor too or boost leaks from the turbo. The orange boots going to the intake manifolds are a known problem. If you can Check the actual boost psi, you should be getting around 15-18 psi or more. Look at the exhaust side of the turbo too. Black soot around any of the exhaust connections would indicate a leak.