Miss at idle
Miss at idle
07 5.4 2wd
Motor now has just under 4k on it.
New timing set, Ford phasers ( but they are locked out and tuned out)
New fuel filter, injectors, plugs, coils, maf, air filter, cats, O2's
I have a slight miss at idle, not enough to throw a code, but enough you can feel it in the seat.
Watching power balance on IDS I can see misfires, missing #4 the worst, but all bank 1 is missing.
I have smoked the intake and have no leaks.
My LTFT are about -7% on both banks, sometimes bank 2 will go to -3% .STFT never go over +3/-3% on both banks.
I'm sure there's info I'm missing.
Please help this misfire is driving me crazy, it's not what I expected after a new motor.Thanks
Sorry for the double post
Motor now has just under 4k on it.
New timing set, Ford phasers ( but they are locked out and tuned out)
New fuel filter, injectors, plugs, coils, maf, air filter, cats, O2's
I have a slight miss at idle, not enough to throw a code, but enough you can feel it in the seat.
Watching power balance on IDS I can see misfires, missing #4 the worst, but all bank 1 is missing.
I have smoked the intake and have no leaks.
My LTFT are about -7% on both banks, sometimes bank 2 will go to -3% .STFT never go over +3/-3% on both banks.
I'm sure there's info I'm missing.
Please help this misfire is driving me crazy, it's not what I expected after a new motor.Thanks
Sorry for the double post
Last edited by Fiction1990; Dec 2, 2025 at 07:03 PM.



