FordExcursions.com Forums
eazrider
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• Phoenix, AZ, USA |
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• Registered on 4/18/2007 |
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• 7 posts |
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 Posted:6/1/2007 07:58 |
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I have an '03 6.0 powered Excursion, with 40k miles. I just purchased it from the original owner, who was adamant that the computer not be re-booted with Ford software upgrades, insisting it removed/modified features (towing feaures, reduced gas mileage, etc.) and resulted in lower performance. It is not clear to me what the re-booting does to the performance of the 6.0, or what issues it is designed to correct. The symptoms I'm having consists of lack of boost occasionally. I have a boost guage, and every now and then the vehicle seems to have a tremendous lack of power and accelleration, almost as if it is stuck in a taller gear. As I keep my foot in the throttle rpm gradually build, and then the boost shoots up, and accelleration is normal. Also, there is a surging, hunting at steady throttle conditions (cruise) on the highway. Shutting off and restarting the engine seems to cure this condition until it occasionally pops up again...Any thoughts? |
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CHPMustang
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• Plano, TX, USA |
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• Registered on 7/24/2002 |
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• 1,800 posts |
• 1 Vehicle
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Posted:6/1/2007 08:29 |
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I don't what the guy was saying about rebooting but it sounds like he was trying to describe "re-flashing" which is something Ford occasionally has to perform on the 6.0L engines to correct fuel flow,timing,etc.
The previous owner probably had a high performance chip installed or a programmer loaded at one time.
The run ability issue sounds like the EGR since they were the first part to get ill in the first year 6.0's(2003 models).
I recommend having a code scanner connected up to the truck to see what diagnostic trouble codes pop up and go from there.
I also notice you're in the Phoenix area( I have folks in Gilbert) and have some friends there that started up a Powerstroke club recently http://www.azpsg.com/ I suggest stopping by there and registering up so you'll have local hands on support,just mention CHPMustang referred ya over(I'm a member too) 
Bill
2002 Excursion XLT-P 4x4 7.3L Powerstroke Diesel
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