stumble stumble

[bskin38]

stumbling under boost

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[PhLoBuS]

I would not go WOT with 91 even though it is close to 93 but the temps have been getting very cold at night. My truck used to stumble and I removed the EGR and it was good after that. I believe your EGR is removed already so it could be either fuel related or a vacuum leak.

 

[bskin38]

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[compsystems]

maybe the plug gap is too open. only stumbles under boost? do you have a wideband?

 

[mcarbine]

When are you experiencing the stumble???

 

[stangmanfive0]

I would not go WOT with 91 even though it is close to 93 but the temps have been getting very cold at night. My truck used to stumble and I removed the EGR and it was good after that. I believe your EGR is removed already so it could be either fuel related or a vacuum leak.

x2 my truck had a very small annoying stumble replaced all coil on plugs spark plugs checked all vacume lines ect fuel filter oil change everything i could think off ended up when i took my truck back to get a new tune from my tunner he drove it and asked if we had the egr turned off or on and i said it was left on and he said HMMM busted out a new tune with out the egr on and no more stumble ......

 

[bskin38]

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[01whiteL]

91 octane ftl