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Thread: Details for Fan graphs boxes on genv

  1. #1
    Tuner
    Join Date
    Nov 2018
    Location
    West Coast
    Posts
    196

    Details for Fan graphs boxes on genv

    Hi,

    The hptuner info page on fans doesn?t really explain, or doesn?t even list, a lot of the boxes and graphs in the fan part of the genv gm tune... (v8 and v6 are the same I believe.

    I?m trying to figure out the following:

    1) Fan output 1 vs current state
    2) fan output 2...
    3) Fan output 3...
    4) Desired ECt torque Zones
    5) Fan state transition % vs Current state

    Like what are the torque zones.. what references back to what etc.

    I?ve had to replace the oem fan with a spal brushless and so far reversing the desired % and desired % vs ac has gotten the fan to run in accordance with the ect temp...

    But not in relation to the ac kpa... and I don?t know if the other boxes/graphs are letting the fan worked as needed because I have not changed any other numbers in the tune.

    If stock was 15=15% fan speed and 92=92% fan speed (max speed recommended) and to get the spal fan the tune required 85= 15% fan speed and 18 = 82-85% fan speed (max speed recommended by spal was 92% but I don?t know how to figure that out.

    Then I?m assuming I need to change some other boxes with the reversed numbers but I can?t figure out what. And I can?t understand why the ac won?t make the fan work...

  2. #2
    Tuner in Training
    Join Date
    Jul 2022
    Posts
    14
    I was just trying to google the same thing. Specifically, what is ECM 18160 - Desired ECT Torque Zones? Also, Is there a way to change the min temp warm up?

    I'm retrying a 71C TStat in my 2015 vette. I had trouble with it last winter because the ECT never got above 176F when it was below 50F outside. Now that it's hot enough outside, I put it back in because the mishmoto 82C TStat started to fail shut. The ECT never got above 223F.

    I dont want to need to start pulling the battery cable this winter to get the fan and temp gauge to behave.