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6.0L Power Stroke Diesel 2003 - 2007 F250, F350 pickup and F350+ Cab Chassis, 2003 - 2005 Excursion and 2003 - 2009 van

SCT X2 Problem?

Old Mar 21, 2007 | 09:30 AM
  #1  
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From: FLA
SCT X2 Problem?

If I put the performance tune in all is great until the truck sets for a week or so and then it is like it goes back to stock.

This past weekend the truck had been sitting with a new download of the performance tune in for about a week. I hit the interstate only to have it start surging and the boost gauge jumping about 10 pounds back and forth. I put my foot in it and the boost gauge wrapped itself all the way around and hit the stop. The truck did not take off either.

I hit a rest area and turn the truck off, let it set for 5, and then restart. Hit the on ramp and it is bucking. I stick my foot in it and hear this farting noise in sync with the boost fluctuations out under the hood.

I finally make it to my destination and check all the turbo hoses and even pulled a couple to get a better look. No problems. I reprogram to stock and all is right with the world again.

What is going on with this? Any guesses?
 
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Old Mar 21, 2007 | 09:33 AM
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Sounds more like sticking EGR or turbo vanes. Have you restored the stock program and still had the same issues?
 
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Old Mar 21, 2007 | 09:39 AM
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purplewg
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Yeah, I put the stock tune in and all was well and still is. This is my third turbo and it is the updated one.

Oh, did I mention that the boost gauge went all the way around once and hit the stop? I wonder what sort of hand grenade I would have had if the truck had actually responded to that.
 
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