Sluggish Acceleration off-the-line when Warm - Ford Powerstroke Diesel Forum
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post #1 of 8 Old 07-30-2007, 11:18 AM Thread Starter
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Question Sluggish Acceleration off-the-line when Warm

Pardon me if an answer to my problem has been posted somewhere already... I'm having difficulty searching these forums. (Server issues??).

Anyway, my '05 X's 6.0L PowerStroke accelerates from a stop (when warm) as though its turbocharger isn't spinning... either that, or like I'm dragging a 5-ton trailer behind me.

It's not so noticeable when cold... but when the engine is warm/hot, sometimes I pull out into traffic and am frightened by the lack of acceleration. Then I mash the pedal and the engine spools up and seems to finally get going.

Any ideas? This just ain't right for a motor with 560 lb/ft of torque.

Tony
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post #2 of 8 Old 07-30-2007, 05:19 PM
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post #3 of 8 Old 07-30-2007, 05:25 PM
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there are several things , turbo may be sticking being the most common , line to map sensor maybe slightly clogged , not very likely but have seen it, ebp sensor bad , vgt solenoid sticking on turbo, egr valve acting up some , need to have codes pulled just to see if there are any , it can set a code with no light on, my

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post #4 of 8 Old 07-30-2007, 05:27 PM
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Originally Posted by SCUFFY828 View Post
there are several things , turbo may be sticking being the most common , line to map sensor maybe slightly clogged , not very likely but have seen it, ebp sensor bad , vgt solenoid sticking on turbo, egr valve acting up some , need to have codes pulled just to see if there are any , it can set a code with no light on, my
I totally agree with scott's above post...the only other usefull info i can think of is if there is any black smoke and how much...
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post #5 of 8 Old 08-01-2007, 10:29 AM
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Is it just turbo lag? I just bought a 06 F250 and when I push on the throttle it seems to sit for about 2-3 seconds then it spools and goes. I thought this was normal for the 6.0's. I had a 7.3 before and there is a night and day difference between the two as far as spool up and take off. Maybe there is something wrong with mine to. I will be watching this thread.

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post #6 of 8 Old 08-01-2007, 10:53 AM
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Mine was doing the same thing the other day. I did not get a check engine light though. I will pull the codes tonight when I get home. I was thinking of upgrading the diablo and tuning it to TOW SAFE and trying that...

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post #7 of 8 Old 08-10-2007, 05:44 PM
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mine did the same thing, if i mashed on it when i was up to speed it would go like a scalded dog but at idle and initial acceleration i didnt hear much turbo noise. It was a stuck charger!

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post #8 of 8 Old 08-10-2007, 05:57 PM
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i also agree with scuffy's post. have the codes pulled if any and go from there. i learned that the 6.0's need to be ran a little harder, almost like they are built to beat up on! i had lots of issues before i started to run it harder. so if you are taking it easy on it that may be a cause also, drive it like you stole it!


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