WOT Problem - PowerStrokeNation : Ford Powerstroke Diesel Forum
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post #1 of 4 (permalink) Old 10-15-2014, 02:46 PM Thread Starter
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WOT Problem

I have an 2004.5 f250. I have a problem at WOT. It will kinde of lag then gain power rapidly, then kinde of take off. No problem at 3/4 Throttle. it actually seems to have all its power here. 6 months ago i had my Head studs done, EGR Delete, Turbo cleaned, New glow/ Dummy plugs, Winston Stock Plus injectors, Blue Spring kit, EGR throttle plate delete, Intake manifold and tube done. I am running a IDP Extreem street tune.
I rutuned it to a stock tune and tested injector pressure at WOT.=2500
I then tuned it to the SCT Performance tune and at 3/4 Throttle= around 3500, and as i roll past 3/4 to WOT it drops to 2899-3000. Did not do this test yet with the IDP tune. I think it would be safe to assume that the test would be about the same.
Does anyone have any ideas? or experienced the same problems? Any help would be appriciated.
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post #2 of 4 (permalink) Old 10-15-2014, 04:50 PM
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Re: WOT Problem

You have to measure icp voltage while there's a tune on it because you will get inaccurate readings

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post #3 of 4 (permalink) Old 10-16-2014, 01:18 AM Thread Starter
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Re: WOT Problem

What should my readings be?
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post #4 of 4 (permalink) Old 10-16-2014, 07:48 AM
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Re: WOT Problem

You could have a weak fuel pump check you fuel pressure at wot if it drops below 40psi its time to change it or get a lift pump

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