03 6.0 turbo lag - Ford Powerstroke Diesel Forum
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post #1 of 5 Old 08-21-2013, 07:28 AM Thread Starter
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03 6.0 turbo lag

I have a 2003 6.0 and have recently started having trouble with laggy response on my throttle. When i start the truck up and take it down the road i can sometimes have my foot up to 75% into the petal before it will decide to take off properly, the truck will be accelerating very slow then out of nowhere take off like a bat out of hell. This is a major problem when i try to cross highways or merge onto a road. Can someone please try to point me to what the problem could be, i would prefer not getting killed by oncoming traffic.
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post #2 of 5 Old 08-21-2013, 07:44 AM
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I'm no expert on turbo issues, but from what I've learned on this site, I would venture to guess your turbo might need cleaning. The vanes could be sticking, not giving you proper spool-up at the bottom end. Maybe someone else will have a different assessment.

Darrell

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post #3 of 5 Old 08-21-2013, 07:54 AM Thread Starter
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I appreciate the response, less than a year ago i had my turbo removed when i had gaskets replaced. They cleaned it out and replaced my wastegate actuator. I wouldn't think it would clog up that quick but who knows....i'm thinking that either my actuator is sticking in the open position or i have a tps problem. I have no codes coming off my truck though,
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post #4 of 5 Old 08-21-2013, 02:51 PM
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I have the same problem on my '03. Turbo was cleaned just over a year ago. Check for exhaust leaks on your turbo up-pipe and the Y-pipe collector. The flex joints on these parts are notorious for cracking and leaking on the 6.0's causeing boost/lag issues. Just got my parts in the mail to fix mine. Fingers crossed that my truck wakes up after this project is done. Also, one exhaust manifold bolt on the passenger side was broken as well, causing a small leak. I'm gonna remove the manifold and install new bolts/gasket to that side. May want to check your manifolds as well.

SOLD--2003 F-250 RC/LB FX4, 6.0, 5R110, EGR cooler capped off at both ends, CAT EC-1, Rotella T6, Motorcraft fuel and oil filters, Amsoil in diffs/T-case, blue spring update, ScanGuage II, 5" Diamond Eye exhaust (not cat, no muffler ) 4" downpipe, Cooper Discoverer S/T's (LT265/75R16E).
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post #5 of 5 Old 08-22-2013, 07:22 AM Thread Starter
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I think the veins are shot, I took it out disesembled it and it doesn't look pretty. Is it possible to get it rebuilt or could it be too far gone...I'm broke as a joke I can't afford a new turbo
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