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Thread: Fan settings Low, Med, and High

  1. #1
    Potential Tuner
    Join Date
    Jan 2019
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    Fan settings Low, Med, and High

    Have a 2011 Geep Grand Cherokee
    Need the setting for the fan.
    High vehicle speed mode with a/c on a/c off
    Low vehicle speed mode with a/c on a/c off

  2. #2
    Advanced Tuner
    Join Date
    Mar 2018
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    Illinois
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    873
    Here are the stock values for a 2013..see the red dots.
    temp.JPG

  3. #3
    Potential Tuner
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    Jan 2019
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    Tks Homer.

    Think I will have any trouble with lower settings on the the low vehicle speed mode
    the tuner has all my setting at 230, low and high

  4. #4
    Advanced Tuner
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    Mar 2018
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    Illinois
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    Not sure what you are asking? What I showed you was the stock fan settings for a 2013 JGC 5.7L which is only a couple of degrees higher than my 2015 challenger 5.7L stock fan settings shown below. If you are using a stock thermostat no need to change the settings, although you can drop them down a couple of degrees but usually that will shorten fan life. The fan settings only really are needed at low vehicle speeds, once you hit the highway they are less effective.
    2015.JPG

  5. #5
    Potential Tuner
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    Apr 2019
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    Yanchep, Western Australia
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    Any chance at all that someone has a picture the same as what was provided above but for a 2010 3.8 litre JKU Rubicon. I've got a nice tune picked up 40HP but now I'm getting hot, fans not kicking in high speed where set. Want to see what I have different?

  6. #6
    Advanced Tuner
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    Mar 2018
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    Illinois
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    This is off a 2011 Jeep Sahara 3.8L.
    jeep.JPG