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    2004 Tahoe 5.3 flex fuel intermittent hot rough idle and stall - SOLVED

    Update. Put in a brand new Delphi maf that I got on Amazon for 90.00 with a legit serial number. Fixed the issue and fixed my transmission slipping/surging issue on harder accelerations, like freeway merging.
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    2004 Tahoe 5.3 flex fuel intermittent hot rough idle and stall - SOLVED

    Currently looking for one that isn’t 300.00+. Rock autos listed one has a Delphi logo, so does AutoZone, Napa, was the OE a Delphi unit?
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    2004 Tahoe 5.3 flex fuel intermittent hot rough idle and stall - SOLVED

    Update, pretty sure it’s the MAF, I disconnected it while it was sputtering and it ran better, when I reconnected it I started getting good flow numbers from it again. But another question my second o2 sensor on each side is showing 99.2% indicating maxed out rich and voltage for both is showing...
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    2004 Tahoe 5.3 flex fuel intermittent hot rough idle and stall - SOLVED

    Drove a short distance, turned engine off, went to restart instantly died. Restart again died. 3rd restart running rough. MAF is at 1.58g/s regardless of throttle position. Have to hold gas pedal for a few seconds to get a consistent rev. MAF readings don’t change. Truck stalled again. Letting...
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    2004 Tahoe 5.3 flex fuel intermittent hot rough idle and stall - SOLVED

    throttle body cleaned in November Don’t know the age of the o2 sensors, can’t make out brand markings, look pretty old Stft go to slightly negative when reved and held and Ltft raise slightly. This morning with warm engine ltft are 8.6 and 7.0 and stft are between 0 and 3.9 when idling. Fuel...
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    2004 Tahoe 5.3 flex fuel intermittent hot rough idle and stall - SOLVED

    So I have a 2004 Tahoe flex fuel model with just starting, last night, rough idle, stumble, stall issue with no CEL, won’t rev or delayed rev. Started last night, drove, then turned off, comes during restart. Found and repaired cracked PCV connections, cleaned MAF and looked for loose...

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