radiator boils over when ac/heater fan is on

Discussion in 'Maintenance/Repair' started by beatboxnlablyrx, Dec 11, 2009.

  1. beatboxnlablyrx

    beatboxnlablyrx Newbie

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    Just got my 87 pickup and im trying to fix the heat. when i turn on the fan (hot or cold) the engine gets hot and boils out of the radiator overflow. any help would be useful...
     
    beatboxnlablyrx, Dec 11, 2009
    #1
  3. Nook

    Nook Addict

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    I take it your meaning the heater fan? which I don't know what that would have any thing to do with the overheating issue. Several possibilities could be causing the boil over, plugged radiator, stuck thermostat, bad clutch fan, or worse case blown head gasket. Good luck
     
    Nook, Dec 11, 2009
    #2
  4. B.Y.E.

    B.Y.E. Toyotaholic

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    Bad radiator cap... Sometimes it's the simple things that cause the most problems... :looney:
     
    B.Y.E., Dec 11, 2009
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