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Electric Fan start temp question **Updated question**

Discussion in 'The Garage' started by opfor2, Sep 19, 2005.

  1. opfor2

    opfor2 1/2 ton status

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    Well I finnaly did it. I bought a new Flex-a-lite # 292 electric fan for my stock 90 K-5 Blazer with TBI-350 with a 195' thermostat. My question is at what temp did you adjust your adjustable fan controler to turn the fan on? What would be the "Ideal" turn on turn off temp?

    thanks

    Dan
     
    Last edited: Sep 20, 2005
  2. 4X4HIGH

    4X4HIGH 1 ton status Premium Member GMOTM Winner

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    That question is dependent on what degree temperature sensor is being used.
     
  3. dirtwarrior17

    dirtwarrior17 Banned

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    yup. they go anywhere from 160 on up.
     
  4. highrlr

    highrlr 1/2 ton status

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    My flex-alite is adjustable to whatever temp you want it to come on at. I have mine set around 190, any lower than that and it seemed to kick in and out ALOT!
     
  5. opfor2

    opfor2 1/2 ton status

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    True that, mine will come with the new and improved adustable sensor, so i'm trying to get an idea as to were to set it. I downloaded the installation sheet and it really dosen't give any information as to what the "Ideal" setting would be.

    Dan..
     
  6. dyeager535

    dyeager535 1 ton status Premium Member

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    As an example, GM set the fans to come on at about 25* above the thermostat temp.

    I assume part of their cooling strategy is based on how efficient the cooling system is. Trying to keep a vehicle with a 195* stat at 195* at idle is possible if the cooling system is efficient, but it's going to be much harder on the cooling system as a whole to keep it at 195* than it is at a somewhat higher temp.
     
  7. 89GMCSuburban

    89GMCSuburban 1/2 ton status

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    Run the truck. Feel the upper hose. When it gets hot (thermostat opened), turn the knob till the fan turns on. Voila.
     
  8. Smitty

    Smitty 1/2 ton status

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    I'm running a 180 thermostat and have the controller for the fan set to turn on at 195. Seems to be working without any problems.
     

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