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  1. 1

    2005 5.3 Tahoe running rough/stalling only when hot

    Unfortunately not yet as I haven't had much time to mess with it. I will update when a solution is found.
  2. 1

    2005 5.3 Tahoe running rough/stalling only when hot

    Yes, it appears to be working correctly. Thanks
  3. 1

    2005 5.3 Tahoe running rough/stalling only when hot

    The intake air temp started at 80 and gradually climbed to 91 as the vehicle warmed up. I didn't see any crazy fluctuations. Unfortunately my cheapo scan tool don't provide MAF data. I had basically eliminated the MAF as the issue because my understanding is that it should just read the fuel...
  4. 1

    2005 5.3 Tahoe running rough/stalling only when hot

    I didn't torque them but I didn't over tighten them. The problem existed before the plug change. The plug change was a response to the problem. Gonna try the spray today. Thanks.
  5. 1

    2005 5.3 Tahoe running rough/stalling only when hot

    Someone I talked to also suggested injectors. Could an injector be sticking once it warms up?
  6. 1

    2005 5.3 Tahoe running rough/stalling only when hot

    I'll spray it today and see what happens. Haven't had any upstream codes at all. O2 sensors were changed preemptively a few years ago when I bought the vehicle. In my head I ruled out O2 sensors because it acts up in both open and closed loop, but I don't know if that's the right way to look...
  7. 1

    2005 5.3 Tahoe running rough/stalling only when hot

    Intake gaskets were changed when I changed the cam and knock sensors. If a vacuum leak in the intake area was a factor, would it cause problems before the engine warms up also, or only when hot?
  8. 1

    2005 5.3 Tahoe running rough/stalling only when hot

    I don't have the capability to do the relearn. The sensor I bought said the relearn wasn't necessary. In any case, changing it made no discernable difference in the way it runs. I also am unable to see fuel trims. All I have is a cheap code reader. IAT and MAF appeared normal, but it's been...
  9. 1

    2005 5.3 Tahoe running rough/stalling only when hot

    Also the rough running does not correspond to open or closed loop. If I kill the vehicle for a couple minutes and restart, it begins in open loop but is still running rough.
  10. 1

    2005 5.3 Tahoe running rough/stalling only when hot

    Hi guys, I hope yall can help with this. '05 Tahoe 5.3, non flex, runs rough/knocks and stalls after it warms up completely. Runs fine when cold and while in the process of warming up. Usually you can smell gas and funky smell from exhaust while it's running rough. 200k miles. I bought it used...

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