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temp probe question 200

posted by  helievacpilot on  Wed Oct 13 12:07 CST 2004
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I have been told that the temp probe in the upper corner of my radiator (1983 244 GLT) is just a thermo switch that I can use to trip the relay to activate my e-fan conversion. My question is this. Exactly what does this temp probe activate? There is a red and green wire coming from it. Where do these wires go? Can I disconnect them to wire in my e-fan?

thanks - Bill








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    temp probe question 200

    posted by  t4d on  Wed Oct 13 19:06 CST 2004
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    My 85 wiring manual shows the fan thermoswitch wired in series (inline) with the + lead to the fan motor. One side of the switch goes to the + side of the fan motor and the other side of the thermoswitch goes to the switched terminal on the fan relay. The relay should turn on whenever the ignition switch is on , which passes power to the thermoswitch, which then passes the +12V to the fan when the temperature rises and the switch closes. The fan motor is always grounded - you'll see the little black wire coming off the fan for ground.
    --
    85 245 DL - 91 Mazda MX6 Turbo








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    temp probe question 200

    posted by  Maxspeed on  Wed Oct 13 18:43 CST 2004
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    last visit: Mon Jan 20 21:55 CST 2014
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    If you wil do a check on one of my posts from ,hmm last month or maybe the month before,, there is a electric fan post there.. I was sent a reply with the wiring diagram attached if my memory serves me,, but then again my memory of shot.. so good luck
    --
    Max..1989 244 DL 5 Spd., Bilstein HD, Turbo Swaybars, Poly Bushings all round, Turbo Wheels, Black leather interior, Electric mirrors, LED dash and gauge lights.








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    temp probe question 200

    posted by  Evan R on  Wed Oct 13 17:57 CST 2004
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    last visit: Sun Sep 28 22:24 CST 2014
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    here's the giggle...

    darn near every one of these switches I've ever seen has the open/close temps stamped right on the switch! Of course, in celcius.

    look for something like 87/92 - that tells you that the switch closes when the temp gets above 92c and then opens when the temp drops to 87c
    --
    '73 142, '75 242, '75 245, '80 245, '83 244, '86 244, '87 745T, 92 244 (for sale)








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      temp probe question 200

      posted by  helievacpilot on  Thu Oct 14 06:09 CST 2004
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      Thanks for the replies. Maybe I wasn't totally clear. My car originally had an engine driven fan and I am putting in an aftermarket e-fan. Does the thermo-switch trigger the aux fan in front of the radiator? I thought that this fan was activated by the a/c? Or is it both?

      thanks - bill







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