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Thread: Thermostat adjustments

  1. #1
    Tuner in Training
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    Thermostat adjustments

    Just curious what everyone is dropping there low, medium, and hi speed fan settings to with a 180 tstat. Vehicle is a '14 Jeep SRT. Thanks in advance.

  2. #2
    Tuner Pector55's Avatar
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    My car is a 5.7 - 2013 Challenger RT - Auto 5 but I run a 180* and here is what I have:

    2016-02-17_2242.png
    2013 Dodge Challenger RT Plus - Shaker

  3. #3
    Advanced Tuner
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    14 Jeep SRT uses PWM controlled fan.
    Found in System/Fans/Control by ECT/PWM desired ECT - just set it to desired temp depending on thermostat used.
    Low/med/high has no effect on these vehicles.

    Quote Originally Posted by JasonHD View Post
    Just curious what everyone is dropping there low, medium, and hi speed fan settings to with a 180 tstat. Vehicle is a '14 Jeep SRT. Thanks in advance.

  4. #4
    Tuner in Training
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    Regardless of what I change, after a day or so, I still get a P0128 code. Is there something in the tune I'm missing, or do most just disable this in the DTC's?

  5. #5
    Advanced Tuner uarperformance's Avatar
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    Did you set the thermostat test to its highest temp and yes you can shut the code off

  6. #6
    Tuner in Training
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    Guess I'm not seeing where thermostat test is in the tune.

  7. #7
    Advanced Tuner
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    Quote Originally Posted by JasonHD View Post
    Just curious what everyone is dropping there low, medium, and hi speed fan settings to with a 180 tstat. Vehicle is a '14 Jeep SRT. Thanks in advance.
    Since thermostat is suppose to open at 180?F, then you can set fans temperatures to 180?F.

    But the engine will most likely run most efficient at a bit higher temperature tho. Finding what temperature is most efficient is going to take some time to figure out. But 190?-210?F is where I would target to have the temperature controlled.

  8. #8
    Potential Tuner
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    Mar 2024
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    OP did you get it figured out?

  9. #9
    Advanced Tuner
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    Jan 2022
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    fan tune is very complex

    you must use native values and really, to get the most from it, the entire tune needs to be tweaked, not just the fan temps

    i first adjust those to get the thing to run at 180

    then i go thru the tune with a fine tooth comb - data logging in between every adjustment along the way
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    don tanklage