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Should both fans always come on with A/C??

This is a discussion on Should both fans always come on with A/C?? within the General Help forums, part of the LSx Technical Help Section category; My car isn't overheating or anything, but somebody told me the fans should always be on when the AC is ...

  1. #1
    Beast
    Guest

    Should both fans always come on with A/C??

    My car isn't overheating or anything, but somebody told me the fans should always be on when the AC is on max... is that right? Both of my fans are definitely cycling, not running constantly.

    It's probably bad info I received, but I thought I would check.

    Mark

  2. #2
    Senior Member SeVeReDiStOrTiOn's Avatar
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    Aug 2005
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    Roseville, CA
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    8,164

    05 Wrangler
    00 Z28 sold :-(

    the secondary fan should be on the whole time the a/c is on as far as i know...i can't remember if the primary fan cycles on and off or not

  3. #3
    Senior Member
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    Jacksonville, FL
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    I have LED's wired to mine with them set to come on low - turning the AC on after just starting the car, AC on max temp - low is on, high speed kicks on for about 45 seconds - then turns off, and then cycles on/off according to temp. I normally run my AC set at the 3 o'clock position, low speed is usually on - but both lights will go off when it cools down or it starts raining.

  4. #4
    down in it 310stanger's Avatar
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    nj
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    white
    90 Mustang 5.0

    both fans should always be on when the a/c is on. this is normally considered both hi and low speed fans. the manufacturers do this to ensure you dont overheat when your engine has the extra workload of running your a/c.

  5. #5
    JMAC Racing WS6ICK's Avatar
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    Aug 2005
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    Kentucky
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    2000 Trans Am WS6 LS6
    2006 GTO LS2

    I have a 2000 Trans Am, WS6, LS1 and both fans come on when the A/C is on.

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