Question about 1987 Toyota Pickup

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Engine temp gauge reading hot, no leaks in system. Heater does not work most of the time. only blows cold air.

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You may have an air bubble in the system, take the radiator cap off and let the engine run. squeeze the radiator hose to pump the coolant a little. look for air bubbles at the open cand and fill the radiator to the proper level.

Posted on Apr 02, 2011

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Hi!!
Make sure there is no blockage in front of radiator or condenser coil. It seems like the cooling fan clutch may be quitting. When the fan clutch is working properly, if you turn the fan with your hand when the engine is cold, it should turn freely, if you do it after driving the vehicle when the engine is HOT, the fan would be pretty stiff and should not turn free at all. By the year of the vehicle, I believe that's where the problem is.
Good Luck!! A HELPFUL - 4 THUMBS - rating for this solution would be greatly appreciated. Thank you for using FixYa!!

Posted on Apr 02, 2011

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Souds like it's way low on coolant. The heater will blow cold air when the cooling system is so low that there is no water (coolant) running through the heater core. Then the thermostat opens, it trys to be normal but the system is low so it gets too hot in just a few minutes. If its that low, there must be a leak somwhere.

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Temperature gauge fluctuates and the heater blows cold air


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