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  1. #1

    Default fan clutch delete??

    i have a 1990 k1500 is it possible to remove the fan clutch and just have the fan run constantly ? if so, would there be any negative consequences ?

  2. #2


    Yes, it is possible. The way these fan clutches are designed, there's a "spring" on the front that expands and contracts with heat. If you disengage the outer end of that spring and rotate it the right direction, the fan clutch will be always engaged. I've done this a few times for diagnostic purposes.

    The main negative consequences: 1) greater noise as the fan will be spinning faster, 2) decrease in gas mileage as it requires some energy to spin the fan and draw air through the radiator (I think that is the main reason fan clutches were introduced -- to help nudge gas mileage up), 3) Possibly an increase in wear on the water pump (or whatever the fan is attached to) bearings. Nothing major. Depending on your reasons for disabling the fan clutch, I wouldn't let these stop you.
    '98 K1500 Suburban LS 5.7 L 4L60E NV246 ARB
    '92 Ford Explorer XLT 4x4 4.0 L A4LD BW13-54 Trac-loc rear
    "My toys were the greasy cogs and springs and pistons that lay around all over the place, and these, I can promise you, were far more fun to play with than most of the plastic rubbish children are given nowadays." Danny in Roald Dahl's Danny The Champion of the World

  3. #3


    you can also have some plave do aftermarket electric fans i had that done on my obs
    06 scsb ls with 4.3 soon to be a built 5.3l with wipple and built 4l80e
    mods: esky handles

  4. #4


    Another negative is sooner or later we will see colder temps, when it gets cold enough you really dont want the fan keeping the engine cold, it adds a whole other set of problems.
    Look for an electric fan, Ford Taurus fans are a suitable replacement and can be found cheap at recycling yards.

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