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Discussion Starter #1
The heat in my impala blows very little when car is accelerating but when its not it blows cold air,why is that?
 
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Discussion Starter #2
Check you coolant level. If it is seriously low and it is not leaking on the ground check your oil. If the oil has milky color and texture have your car towed to a service shop and have them check it out. GM's 3.1 and 3.4 Litre engines have intake gasket failure problems.
 
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Discussion Starter #3
thermostat stuck open, low/too much coolant in jacket, heater valve stuck shut, theres only so many controls in one system, the answer should be fairly obvious quickly
 
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