Cooling Fan Relay
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Cadillac Allante Forum Discussion, Cooling Fan Relay in Past Cadillac Vehicle Discussion; I am unable to locate the cooling fan relay as it shows in the service manual. 1989. I have put ...
  1. #1
    nicedad1 is offline Cadillac Owners Member
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    Sep 2004
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    Cooling Fan Relay

    I am unable to locate the cooling fan relay as it shows in the service manual. 1989. I have put in new motors, and a new solid state controller... no help. Where is this relay anyway? Help!

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  3. #2
    carnut is offline Cadillac Owners Master
    Automobile(s): 1988 Allante' (sold), 1984 Eldorado, 84 Sedan DeVille
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    Re: Cooling Fan Relay

    Behind The Coolant Storage Tank, Passenger Inner Fender.

  4. #3
    nicedad1 is offline Cadillac Owners Member
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    Re: Cooling Fan Relay

    Nope... that wasn't it, nor the one next to it. I finally located this elusive relay up under the metal lip behind the RH Headlamp assy, near the fuseable link box. Not easy to find, and even harder to work on.

  5. #4
    Hugues_beaulieu is offline Cadillac Owners Member
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    Re: Cooling Fan Relay

    I have a Seville 1993 with the 4.9L and my cooling fan not turn, i reach 230F but still not turn. I try to look where is the RELAY?? Does somebody can tell me WHERE IS THE COOLING FAN RELAY ????

    Thanks

  6. #5
    91TexasSeville's Avatar
    91TexasSeville is offline Cadillac Owners Connoisseur
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    Re: Cooling Fan Relay

    There are three fan relays located in the relay center under the hood on driver side. The puller fan (radiator side) is controlled by the PCM and relay B which is the first relay on the right side of the relay center counting from the front of the car (nearest driver side headlight).

    If both fans come on when the A/C is in auto, but the puller fan does not start when A/C is in OFF or ECON, then chances are; relay B is not working or there is no power to the relay. Relay B is the only relay that runs the puller fan, any other time it is bypassed when the A/C is in auto.

  7. #6
    KrisK is offline Cadillac Owners Member
    Automobile(s): 1996 Fleetwood Brougham; 1993 Pinninfarina Allante
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    Re: Cooling Fan Relay

    Quote Originally Posted by 91TexasSeville View Post
    There are three fan relays located in the relay center under the hood on driver side. The puller fan (radiator side) is controlled by the PCM and relay B which is the first relay on the right side of the relay center counting from the front of the car (nearest driver side headlight).

    If both fans come on when the A/C is in auto, but the puller fan does not start when A/C is in OFF or ECON, then chances are; relay B is not working or there is no power to the relay. Relay B is the only relay that runs the puller fan, any other time it is bypassed when the A/C is in auto.
    Does this apply to the 93 model too?

  8. #7
    KrisK is offline Cadillac Owners Member
    Automobile(s): 1996 Fleetwood Brougham; 1993 Pinninfarina Allante
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    Re: Cooling Fan Relay

    Quote Originally Posted by 91TexasSeville View Post
    There are three fan relays located in the relay center under the hood on driver side. The puller fan (radiator side) is controlled by the PCM and relay B which is the first relay on the right side of the relay center counting from the front of the car (nearest driver side headlight).

    If both fans come on when the A/C is in auto, but the puller fan does not start when A/C is in OFF or ECON, then chances are; relay B is not working or there is no power to the relay. Relay B is the only relay that runs the puller fan, any other time it is bypassed when the A/C is in auto.
    Does this apply to the 93 model too?

  9. #8
    dustypatch101 is offline Cadillac Owners Member
    Automobile(s): Cadillac
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    Jul 2008
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    Re: Cooling Fan Relay

    Hello, not sure if this will help but my fans on my 89 Allante stopped working. I removed the module and cleaned all the contacts, fans are once again working

    Stu Vancouver B.C. Canada

  10. #9
    Donnda is offline Cadillac Owners Member
    Automobile(s): Escalade, Allante
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    Re: Cooling Fan Relay

    There is life on this forum !!!!!!

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