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  1. T

    P0101 + P0300 = ?

    Update: No discernible change in idle when spraying carb cleaner. I think I'll replace the plugs in the near future and keep my eyes, ears and Torque app open for more evidence of problems, if they crop up. I also bought a fresh can of contact cleaner, so when I am under the hood I can spray...
  2. T

    P0101 + P0300 = ?

    Thanks for the info. I think I'll spray around a bit looking for vacuum or intake leaks this weekend. Cylinder 4 is the misfire leader, so I'll see what I can find over there.
  3. T

    P0101 + P0300 = ?

    It won't hurt to have some carb cleaner around. It's dirt cheap compared to other sprays, too.
  4. T

    P0101 + P0300 = ?

    Thanks!
  5. T

    P0101 + P0300 = ?

    Thanks for the info. I appreciate your help! I reckon I need to grab a can of carb cleaner when I buy a can of contact cleaner.
  6. T

    P0101 + P0300 = ?

    Updates: IAT reads at actual ambient temp. I was able access misfire history. All cylinders had values at start up. Over 10-15 minutes running on my driveway, I saw increases in cylinders 3 (+16), 4 (+52) and 7 (+2). Plugs and wires were replaced 5.5 years /23k miles ago. Throttle body was...
  7. T

    P0101 + P0300 = ?

    Thanks for taking time to respond. Currently, my scanner is Torque Pro on my phone. I'll check what temperature sensors it reads. Last night I figured out how to add cylinder misfire PIDs, so I hope to collect more data on that. I am open to buying a more detailed scanner, but I don't use...
  8. T

    P0101 + P0300 = ?

    I don't know how old the plugs and wires are. I have had the Tahoe for about 1.5 years. And have only put 10k miles on it. The previous owner took good care of it. I'll have to look and see if he documented that service. Thanks for the throttle body cleaning suggestion.
  9. T

    P0101 + P0300 = ?

    Thanks for the suggestion.
  10. T

    P0101 + P0300 = ?

    Hi all: I have a 2001 Chevy Tahoe with about 125K miles that doesn't get driven much. It has shown me a couple of codes over the past two months. It started with a P0101 (Mass Air Flow Circuit Range/Performance), so I replaced the MAF sensor (even I can do this without bloodshed!). It felt...
  11. T

    MAF fun

    That's good info to have. I didn't realize the MAF contributed to so much. I'll hunt down a new OEM one.
  12. T

    MAF fun

    Replacement MAF was new, but not OEM/Delphi. Bad part is definitely a possibility. It is also possible that I didn't get the MAF seated properly on one end or the other. I am trying to be very careful with reinstallation of the cleaned up old MAF. Thanks for taking time to reply!
  13. T

    MAF fun

    My 2001 Tahoe recently gave me a P0101 code, along with some infrequent jerky performance (engine seeming to briefly cut out under acceleration), so I bought it a new MAF for Thanksgiving. The new part improved things for maybe an hour of driving in town, then the code returned and the loss of...
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