Question about 2000 Chevrolet S-10

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Heater coil chevy s-10

Truck overheats and mist comes out of heater vents

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  • Jack Ferguson
    Jack Ferguson Jun 19, 2008

    thanks for the info.

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Replace the thermostat in the engine coolant system - should be near the water pump or in the top hose to the rad. Mist in the heater vents usually means a corroded heater core, that should be replaced. Be sure to use the correct mix of anti-freeze, to keep the boiling point in the cooling system correct. Many who live in the warmer states, thing that plain water is OK, but it is NOT. Antifreeze contains corrosion inhibitors that protect the engine cooling system.

Posted on Jun 19, 2008

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1 Answer

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Antifreeze is leak between heater valve to heater core.

Check and replace.
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A/c is not cooling


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if it is a cool mist ,it is the air conditioner freezing up ,check freon to see if it is low,,and low presure cut out switch to see if it is working corectley,,u might have a closed up expansion valve,,,,,if it is not a cool mist and smells sweet,,,it is the heater core,,,stop leak,,or replace heater core

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