7.3 goofy power surge

[brackin2000pstroke]

Hey everyone.. I have a 2000 f250 6speed with a 7.3.. 38r, 180cc injectors with stock nozzles and Tony wildman tunes... I'm getting this weird surge when I drive.. I've heard of guys loosing power and could be the pedal but I'm actually getting jolts of power.. Changed ICP sensor, IPR and IDM still no change.. Working with Tony to see if its the tunes.. Any ideas???

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[lincolnlocker]

coil on ipr new too?

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[brackin2000pstroke]

??? Replaced the hole IPR.. Guess I've never heard of a coil other then the magnet coil within the ipr

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[turboTwang6]

Actually going through this same thing with a 99 7.3. Make sure the nut is still on the back of the IPR and not laying in the valley. We also noticed tonys tunes seem to be a bit sensitive to throttle input above ~1900 RPMs or so. Post up if you and Tony end up finding a problem, I'm working with him as well and I'll let you know if I find out anything.

 

[brackin2000pstroke]

Ya nuts still there.. We thought maybe it was my IDM cause someone home brewed a 140v highfreq jobber but that didn't seem to change anything... I'm also having a problem coming off sled pull to all other tunes.. ICP drops so much it dies.. What's it idling ICP at?

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[Dmstrucks02]

How's the fuel pressure when it's surging?

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[ghohouston]

Does it act like it's dying, or actually surging?

 

[brackin2000pstroke]

Does it act like it's dying, or actually surging?

Actually surging. Like 50 horse increase surge lol its dumb

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[brackin2000pstroke]

How's the fuel pressure when it's surging?

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Haven't been able to check that don't have a fuel pressure sensor yet

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[Dmstrucks02]

Haven't been able to check that don't have a fuel pressure sensor yet

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I was just wondering if fuel pressure is dropping while it's surging. .

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[brackin2000pstroke]

I was just wondering if fuel pressure is dropping while it's surging. .

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Well its like ur driving at about 1800 rpm maintaining and then you get a boost of energy. ICP will jump a bit and throttle percent moves a lil but not enough to how it feels..

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[brackin2000pstroke]

Seems to be worse in morning or if really warm and humid

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[Dmstrucks02]

Well its like ur driving at about 1800 rpm maintaining and then you get a boost of energy. ICP will jump a bit and throttle percent moves a lil but not enough to how it feels..

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Lol probably not fuel pressure
Does it do it in all positions on the chip?
How about with out the chip installed

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[brackin2000pstroke]

Lol probably not fuel pressure
Does it do it in all positions on the chip?
How about with out the chip installed

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With it stock mode it won't do it cause of the setup I have it has no power lol the tunes definitely pronounce it more... It is hard to explain.. But I'm not throwing any codes either...

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[lincolnlocker]

id check fuel pressure

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[brackin2000pstroke]

id check fuel pressure

live life full throttle

I'll see if I can't do that today at work...

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[brackin2000pstroke]

id check fuel pressure

live life full throttle

I'm pretty sure my pressure is alright with as much extra fuel I'm wasting (smoke) but definitely worth a try

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[brackin2000pstroke]

https://vimeo.com/133474894

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[brackin2000pstroke]

https://vimeo.com/133475059

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[lincolnlocker]

I'm pretty sure my pressure is alright with as much extra fuel I'm wasting (smoke) but definitely worth a try

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low fuel pressure will create more smoke. whats voltage doing? not on the dash gauge either. need a voltmeter or voltage gauge in cab while driving.

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