Could a bad turbo cause surging driving up hill? - Ford Powerstroke Diesel Forum
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Old 09-10-2011, 05:40 AM
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Could a bad turbo cause surging driving up hill?

I've been having a surging problem with my '06. It bucks going up hills and is worse with higher loads. I can't "see" anything wrong on my Auto Enginuity, all specs look normal, but I have been noticing some oil haze at idle and the turbo makes a grinding/spinning sound on shut down that echos all the way to my tailpipe. Has anyone had this issue solved with a new turbo? or even solved it with any other repairs?
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Old 09-10-2011, 06:15 AM
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I'm curious to see what is said about this. Mine just started surging about two weeks ago. I'm not getting any haze or grinding noise though, the rpm's just jump up and down when I'm pulling a hill or have a heavy load like your experiencing. My truck doesn't do it if your running it hard though, it just seems to be when I'm at a constant speed.
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Old 09-10-2011, 06:28 AM
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Yes, mine's a constant speed problem too. Already pulled and cleaned the EGR and put in new gaskets. Then I unplugged it and that changed nothing. IPR, IPC, all that appear good on my Auto Enginuity. Almost thinking it's trans related. But since I know the turbo is pretty well shot I'm curious if that could be it.
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Old 09-10-2011, 07:21 AM
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are you overboosting?
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Old 09-10-2011, 03:19 PM
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Nope, not at all. Almost suspecting the trans.
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Old 09-10-2011, 09:47 PM
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mine has been doing the same thing, its been to ford a few times and they can't seem to figure out what is wrong either. I would like to know if someone finds a cure for this symptom so at least I know another place i could possibly look.
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Old 09-23-2011, 12:39 PM
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The most common cause of this symptom is the EGR valve for those who are curious.

You've cleaned yours up so I'm not really sure where to go from there.
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Old 09-23-2011, 12:45 PM
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try giving the vanes a workout with some WOT runs. open it up and look at the wheel
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