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Thread: High Ambient Temp after ReFlash - Gen V LT1 & LT4

  1. #1
    Tuner Camaro6's Avatar
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    Jun 2018
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    Chicagoland
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    75

    High Ambient Temp after ReFlash - Gen V LT1 & LT4

    I've noticed after a reflash on my 2018 Camaro SS (LT1) the ambient air temp will go very high 118 degrees when it's only 80-90 degrees outside. This changes the VE fueling (if temp enabled) and I don't recall it doing it 1yr ago when I did the S/C or 6 months ago when I changed the tune a little. It takes awhile for it to come back down to actual temp for proper fueling to match the actual tune parameters. Is there a fix for this or something HpTuners can look into? Or it's just a ECM reflash thing that happens?
    2018 Camaro SS, LT4 Fuel System, LT4 S/C

  2. #2
    Ambient air temp is used by the HVAC module. Are you looking at Ambient or Intake air sensors? The Ambient sensor is wired directly to the HVAC module.

    Either way on a 90 degree day if you are sitting still the temp will rise quite a bit.

  3. #3
    Potential Tuner
    Join Date
    Nov 2019
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    1
    Quote Originally Posted by Jeff7577 View Post
    Ambient air temp is used by the HVAC module. Are you looking at Ambient or Intake air sensors? The Ambient sensor is wired directly to the HVAC module. run 3

    Either way on a 90 degree day if you are sitting still the temp will rise quite a bit.
    Thank you so much! It's very helpful!