Tranny issue or powerstrokeism? - Ford Powerstroke Diesel Forum
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Old 02-02-2012, 04:01 PM
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Tranny issue or powerstrokeism?

Alright guys, I’m a brand new diesel owner, with that being said I don’t have a lot of experience with Ford in general. I just bought a 05 with a 110,000 on and I’m feeling a weird lag/flutter when doing 40+ if I get on it. It seems to go away after everything is good and warm and I really can’t tell if it’s the trans or the motor causing the issue. I’m thinking the trans because the rpms don’t jump and the boost is steady. I have read through here and seen related issues, but everyone else is experiencing shaking like the motor is missing which I have had experience with in other trucks and it doesn’t feel like that. Anyone have any input on if it’s a cause for concern or just a typical powerstrokeism. Thanks
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Old 02-03-2012, 06:58 AM
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Welcome to the Org. We could use some more info, what do you mean by a lag or flutter at 40. is it only when at 40mph, is it a muffler drone, any work to the truck?

how is when hammering it?
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Old 02-03-2012, 10:35 AM
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After playing around with it a little today on the HWY I figured out it only does it in 5th gear @ 18-2000 RPMís. I thought it went away after it warms up but it doesnít. When itís in 5th gear and I go to give it a little power it will shake a little and almost feel like its slipping, but as soon as it either down shifts or gets past 2000 rpm it goes away. Everything shifts fine and I donít notice any power fluctuations any other time other than this. I just ordered a EGR delete with the SCT X3 so Iím anxious to see if the different tunes for the trans does anything. The only thing done to the truck right now is a K&N air cleaner.
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Old 03-12-2012, 05:49 PM
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Any luck in figuring out what is causing this my truck is doing amost the same thing any help from op or anyone else would be greatly appreciated
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Old 03-12-2012, 06:02 PM
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After doing a little research I think it is a problem with the IPR. At first I thought it was a turbo problem; I pulled it and cleaned it when I did my EGR delete a few weeks ago, and it was pretty bad. But now I’m leaning towards the IPR after reading up on a few post this sounds more like the culprit. It's going to the dealer on Friday to get diagnosed, as soon as I know something for sure I’ll post it.

Last edited by Clark McLaughlin; 03-12-2012 at 06:11 PM.
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Old 03-16-2012, 05:09 PM
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Okay, here is the update: Took it to the dealership to have a diagnostic done to figure out exactly what was going on, and I found out that the # 5 injector is going out and the turbo is about to crap the bed. He also said that the fuel pressure regulator was messed up and the PSI was only at 38; 40 is spec. So with all that being said I think I have decided to go ahead and throw the money at it and knock out the studs, gaskets, oil cooler, 155/30 injectors from Warren diesel, Powermax turbo and tuning from Eric, along with 4” turbo back exhaust. This ended up being the worst case scenario from me, but I figure it gives me a good excuse to get everything done.
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Old 05-08-2012, 06:44 AM
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i had the same symptoms and it was bad #4 and #8 injectors
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