how to wire an electrical fan through a switch?

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  • nando
    Moderator
    • Nov 2003
    • 34827

    #16
    Originally posted by asuj158
    nvm. you sure sound like a jerk. but im a jerk too sooo thats alright. but maybe ill wait until tomorrow and go get a thermal switch. will autozone have them?
    your car already has one

    you should maybe consider using a new clutch fan instead until you can do some reading and figure this all out..
    Build thread

    Bimmerlabs

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    • 16v of E30
      Banned
      • Aug 2008
      • 157

      #17
      The purpose of using an electrical fan is to take out the clutch pulley running off the motor, freeing up hp. whoopde doo your alternator might run a bit more amps but no big deal. I am considering it for my car as well. I live in a cold winter climate, so i dont need the fan at all. Summertime, when the track days are running hot, just leave the fan running in between runs...

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      • asuj158
        E30 Fanatic
        • Nov 2008
        • 1206

        #18
        well i wired the fan through the switch and... TAAAA DAAAA it works. I like it the way it is. but down the road i might switch to thermal switch. Is the thermal switch the input on top of the thermostat housing?

        you can try and say im a dumbass... but at least im not the guy who put brake fluid in my motor then tried to clean it out with brake cleaner

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        • nando
          Moderator
          • Nov 2003
          • 34827

          #19
          Originally posted by 16v of E30
          The purpose of using an electrical fan is to take out the clutch pulley running off the motor, freeing up hp. whoopde doo your alternator might run a bit more amps but no big deal. I am considering it for my car as well. I live in a cold winter climate, so i dont need the fan at all. Summertime, when the track days are running hot, just leave the fan running in between runs...
          your clutch fan isn't sapping any power with the car running. the whole idea is it only locks when the car gets hot (like idle), when you are moving at any significant speed the fan is free wheeling and not moving any air at all.

          the last track day I did it was about 95 degrees and my electric fan didn't come on ONCE. you don't need it for moving, you don't need it for fast driving, the only thing you really need it for is heavy traffic..
          Build thread

          Bimmerlabs

          Comment

          • asuj158
            E30 Fanatic
            • Nov 2008
            • 1206

            #20
            Originally posted by nando
            your clutch fan isn't sapping any power with the car running. the whole idea is it only locks when the car gets hot (like idle), when you are moving at any significant speed the fan is free wheeling and not moving any air at all.

            the last track day I did it was about 95 degrees and my electric fan didn't come on ONCE. you don't need it for moving, you don't need it for fast driving, the only thing you really need it for is heavy traffic..
            good explanation

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