NO POWER UNTIL 30mph?

[TwiztedPiff]

hey everyone.

just picked up a 97 f250 powerstroke. 197k on the clock.. niice truck will post pics soon.. anyway.. i got it from the original owner. for 2000 and its an extended cab.. in awesome no rot condition.. i think i did well

heres the issue..

truck drives fine.. but no power untill 30 mph.. then after 30mph it runs and drives perfectly fine.. being an original owner im thinking not to much of the tips and tricks of DIY this site offers were utilized on this truck.. so its back to the basics on this thing... any ideas?

friend of mine mentioned he rememered changing some piece either near or connected to the turbo... that clogs up and once replaced it runs like a brand new truck.. could that be the possibilitie? i also know there is a tube that clogs up with carbon... but then again could it be injectors?

[TwiztedPiff]

anyone? im not to great with the forum stuff and im trying so if this is poseted somewhere else.. i appologize.. but i still need the help regardless.. anyone?

[TwiztedPiff]

can any one help?

[TheFordman87]

I don't know to much about the 7.3 but it could be something with the turbo. But do you have a scanner tool that you can see if it's throwing any codes or anything?

[Cdunham29]

Sounds like a turbo problem. Maybe not spooling up properly or has a leak. Check your boost first, listen for leaks.


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[TheFordman87]

Check all the turbo boots for cracks and tears

[TwiztedPiff]

well i put the whole truck back together enough to fire the engine up (no intake setup connected to turbo) for the first time in 6yrs/..

ran like my 383 stroker motor with high lobe cams..

first thought; change valve cover gaskets, injector harness for all injectors, powerservice and fresh diesel ...

NOPE!!!!

i saw that previous owner used a coat hanger to hold something open under the turbo.. thinking the EBPV.. so i unhooked the wire.. (truck still ran the same way..

THATS NOT THE ISSUE!!!

HELP!! whats next? besides oil change cause thats probably just as old

[jesilvas]

Ummm, change oil first
This is why oil is important - How HEUI works and best to convert

[Cdunham29]

Change the fuel filter why your at it. When I changed mine after I bought my truck the bottom was covered in crap. Truck ran way better after. I also use XDP fuel additive with every fill up... Makes a difference.


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[85_305]

Truthfully, it sounds like how these trucks run. They dont make max hp until 3,000rpms, and thats RIGHT about 30mph. In 1997, an f250 was said to be faster than a mustang gt from 30-70mph. I believe it because at 30mph if you punch it, the kickdown results in a TON of power due to being in the power band.

Try posting in the General Discussion or the High Performance section here, because this part of the forum doesn't see much action.