radiator fans not cutting on
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Northstar Engines and System Technical Discussion Discussion, radiator fans not cutting on in Cadillac Engine Technical Discussion; ok i think i found out as to why my car warsm up in idle. i am getting up to ...
  1. #1
    Talamant3z's Avatar
    Talamant3z is offline Cadillac Owners Enthusiast
    Automobile(s): 1997 Eldorado
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    radiator fans not cutting on

    ok i think i found out as to why my car warsm up in idle. i am getting up to 235 and it will come down when i drive. i checked the fans (thanks to a suggestion from a forum member )and they arent cutting on. i let the car get to 208 and no fans i also turned the ac on which i was told at least one should and both didnt cut on. so the car got to 208 with ac on and no fans. does it take the engine to get hotter or could something be wrong?

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  3. #2
    Talamant3z's Avatar
    Talamant3z is offline Cadillac Owners Enthusiast
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    Re: radiator fans not cutting on

    also i been reading about relays how can i check those and where are they on a 97 eldorado

  4. #3
    Krashed989's Avatar
    Krashed989 is offline Cadillac Owners Connoisseur
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    Re: radiator fans not cutting on

    Fans should turn on at about 224 degrees F. The relays are located in between the bottom of the two fans. There are 3 of them. I forget how they're wired to work but I did hotwire them to toggle switches on my car to bandaid a HG problem for a while before I changed my engine.

  5. #4
    Talamant3z's Avatar
    Talamant3z is offline Cadillac Owners Enthusiast
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    Re: radiator fans not cutting on

    Quote Originally Posted by Krashed989 View Post
    Fans should turn on at about 224 degrees F. The relays are located in between the bottom of the two fans. There are 3 of them. I forget how they're wired to work but I did hotwire them on my car to bandaid a HG problem for a while before I changed my engine.
    damn thats pretty hot haha what about with the ac on or it wont matter

  6. #5
    Krashed989's Avatar
    Krashed989 is offline Cadillac Owners Connoisseur
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    Re: radiator fans not cutting on

    For some reason on my car the fan doesn't kick on when the a/c is turned on, but everything works fine. It doesn't overheat or anything. On my dads 99 eldo, one fan does kick on when the a/c is turned on though. I think it varies depending on the car.

  7. #6
    Ranger's Avatar
    Ranger is offline Cadillac Owners Member
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    Re: radiator fans not cutting on

    When the A/C is on, the fans should be on.

  8. #7
    Talamant3z's Avatar
    Talamant3z is offline Cadillac Owners Enthusiast
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    Re: radiator fans not cutting on

    yeah i always was told one shold cut on right away. well im going to drive around today until i hit 224 and see if they cut on will one or both cut on at 224

  9. #8
    Krashed989's Avatar
    Krashed989 is offline Cadillac Owners Connoisseur
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    Re: radiator fans not cutting on

    Both at low speed... they should switch to high speed at about 228

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