HELP?! 2004 5.3 ltr light throttle vibration/misfire
August 4th, 2013, 2:22 PM
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HELP?! 2004 5.3 ltr light throttle vibration/misfire
My suburban vibrates or misfires under light throttle @ different speeds between 40 & 55 MPH.
Lean on the throttle or manually shift into 2nd or 3rd mitigates or stops it completely.
Start, idles, and runs fine above or below this range.
I've cleaned the MAF & TB w/MAF cleaner to correct recent a low idle/stalling problem - fixed that, but the vibration/misfire persists.
thanks in advance, Tony
Lean on the throttle or manually shift into 2nd or 3rd mitigates or stops it completely.
Start, idles, and runs fine above or below this range.
I've cleaned the MAF & TB w/MAF cleaner to correct recent a low idle/stalling problem - fixed that, but the vibration/misfire persists.
thanks in advance, Tony
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