Maybe an SCT problem? - Ford Powerstroke Diesel Forum
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post #1 of 5 Old 01-26-2007, 08:52 AM Thread Starter
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Maybe an SCT problem?

So i have been driving my truck for awhile on my street setting, and on the race setting. The truck doesnt run that well. It never feels like I have any power on tap, and only under full throttle does it seem to run well. Also, while cruising at a certain speed, the truck will sometimes start to buck even though I am holding a constant throttle pressure. I assumed the problem was because I had a bad Injector sensor, but I got that replaced at ford yesterday, and it didnt change anything.

Any ideas on what it might be, or do you think I need to get new tunes?

1997 F350 CrewCab 7.3
Toyo M/T 35's (Stock height)
Superwinch Manual Hubs
Farmboy Diesel Straight Pipe
Tony Wildman 4pos Chip
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post #2 of 5 Old 01-26-2007, 09:33 AM
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Quote:
Originally Posted by trackmagic View Post
So i have been driving my truck for awhile on my street setting, and on the race setting. The truck doesnt run that well. It never feels like I have any power on tap, and only under full throttle does it seem to run well. Also, while cruising at a certain speed, the truck will sometimes start to buck even though I am holding a constant throttle pressure. I assumed the problem was because I had a bad Injector sensor, but I got that replaced at ford yesterday, and it didnt change anything.

Any ideas on what it might be, or do you think I need to get new tunes?
Call the dealer that you got your SCT from and ask them. They may have seen this problem before. My thoughts are that its probably something wrong with your truck, not the SCT because it doesn't sound like it has always been a problem, but I'm not a SCT guy so it could be. I think that there were some issues with bad turbos in the year of your truck.


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post #3 of 5 Old 01-26-2007, 09:45 AM
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Take the tune out and put the factory tune back in and see what happnes, that will tell you if its the tune or not.
Bucking can be cause from other things - injector related. Hope its the tune and not failing injectors!

2003 6.0 F350 dually on high cholesterol fuel (WVO)
2000 7.3 Excursion also on a high cholesterol fuel



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post #4 of 5 Old 01-26-2007, 09:47 AM
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I might add, i have the same exact engine you do and when my injectors failed, it bucked like your saying. Check your oil level! If its overfull and smells like diesel fuel, DONT drive it.

2003 6.0 F350 dually on high cholesterol fuel (WVO)
2000 7.3 Excursion also on a high cholesterol fuel



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post #5 of 5 Old 01-26-2007, 12:57 PM
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Quote:
Originally Posted by CHenry View Post
Take the tune out and put the factory tune back in and see what happnes, that will tell you if its the tune or not.
True but sometimes because everything is amplified with a tuner, the problem may not be as noticable.
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