Releasing boost at WOT, cutting into acceleration, 2004 250 - Ford Powerstroke Diesel Forum
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post #1 of 5 Old 12-17-2007, 10:54 PM Thread Starter
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Releasing boost at WOT, cutting into acceleration, 2004 250

It will do it when i'm trying to get on the highway. Its not when the tranny is shifting, its in between shifts. Also does it going down the highway @ about 70, and I try to speed up. The rpms will hit about 2500 it will release boost every 3 to 4 seconds. All stock except for a intake.

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post #2 of 5 Old 12-22-2007, 04:26 PM
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i have the same problem heres a bump b/c id like to figure this out
good luck!!

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post #3 of 5 Old 12-22-2007, 07:38 PM
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If my truck was doing that, I'd assume my turbo was shot. Maybe one of the turbine wheels was rubbing and/or vanes are getting hung up on some rust and are having a hard time closing while you're on the gas.

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post #4 of 5 Old 12-22-2007, 10:03 PM
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Lucky for you I have been down this road.. Mine did it as bad as you where saying but it had to be under a good load. It was the egr valve.. First they cleaned it and gave it back.. did not fix it.. i gave it back to them the drove it and said it was fine.. I went to the hill i told them to go to.. and it did it was went back the next morning madder than hell.. finally got the guy to ride with me with the comp plugged in and he said it was dropping boost could be the Egr or turbo.. turns out it was the egr the just cleaned and put back in my truck about a month before.. (yea that is how slow there shop is) and 3 trips to the dealership.. My truck had 34 K on it when it started doing it
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post #5 of 5 Old 12-22-2007, 10:27 PM
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I HIGHLY doubt its the egr. If i read your post correctly its the turbo. The vaines are sticking. making that chu chu chu noise under throttle. my 04 did it and one phone call to marc and he told me it was the turbo. took it in and sure enough it was. Just take it in and have them look at it. Good luck

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