no heat when idlling on 2004 Buick Century

My car heater only works when driving. When on idle will not heat up. Can try to warm up car but heater wont work while idling.

by in Cochranton, PA on January 23, 2011
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1 answer
ANSWER by , January 23, 2011
If the coolant level is full, a stuck open thermostat could be causing your concern.