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Thread: electric fan override?

  1. #1
    Join Date
    Feb 2003
    Location
    Middlebury, CT
    Age
    36
    Posts
    587

    electric fan override?

    My car has been running hot recently cus ive been doing alot of stop and go driving. I wanna know is there a way i can wire in a switch to manually turn on the second fan when it gets warm? this fan will only turn on when the AC is on.

    and at what temp does the other fan turn on? is it 220 like most other GM electric fans?


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  3. #2
    Join Date
    Jan 2003
    Location
    Newtown, PA
    Age
    58
    Posts
    6,472
    At Idle, with A/C "OFF", I believe the Primary Fan is set to 225 deg. F and the Secondary Fan is set to 232 deg. F

    Hope that helps.

  4. #3
    Join Date
    Feb 2003
    Location
    Middlebury, CT
    Age
    36
    Posts
    587
    how can i make them come on lower? I dont like the idea of an aluminum engine getting that hot before the fan goes on... esspecially if im in hot traffic or pushing the car hard.

    I overheatted one car once and boiled the coolant... and i DONT wanna do it again.

  5. #4
    Join Date
    Jan 2003
    Location
    Newtown, PA
    Age
    58
    Posts
    6,472
    You CAN "back-door" the relays but you REALLY don't need to. The engine is designed to run at those temps. The mod is easy and there's even fan control kits available in parts stores.


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