LT1-LT4 Modifications 1993-97 Gen II Small Block V8

heater not working?

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Old 01-24-2012, 04:06 AM
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Default heater not working?

Hey everyone. I just put the 383 back in my car and the heater doesn't get hot. The car has a stock thermostat in it and the engine get warm. Can you think of something I might have forgot? Maybe a vacuum line somewhere? Thanks
Old 01-24-2012, 06:40 AM
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You probably need to flush the heater core. Coolant likes to coagulate when the hoses are open and exposed to air (like when your engine is out).
Old 01-24-2012, 06:41 PM
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Ok I will try that. They were open for 2 years so that might be it
Old 01-24-2012, 06:52 PM
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be careful fi those lines were open for 2 years. the core could have corroded, and may leak inside the car.
Old 01-25-2012, 12:48 AM
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flush it!



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