Question about 1987 Chevrolet G20

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Heater doesn't blow hot - 1987 Chevrolet G20

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Air in cooling system or clogged need to bleed water system let air out, or bad theromstat or bad heater core

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SOURCE: heater doesn,t blow hot

Have you checked your coolant? if coolant is low it can cause an air pocket in heater core and it wont pass out until rpm's increase by the extra flow of water pump. if it is full then might wanna try removing heater hoses and back flushing heater core with water might have a little trash in it restricting flow.

Posted on Dec 04, 2008

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