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Old 06-08-2005, 11:40 PM   #1
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Default Air conditioning / heater core question

Hi

I have a 1996 SE Bonneville with the regular manual type of HVAC. It does not blow very cold air when in the a/c mode. It is adequetely but that is about all I can say about it.

My question is this. What controls the flow of engine coolant water to the heater core? I would immagine that it must be shut off when you want to use your a/c. In the old days, there was a vacuum actuated valve that would stop the flow of coolant. Is there an equivelant device on my 96 Bonneville?

Thanks for your help
Andy
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Old 06-08-2005, 11:43 PM   #2
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There is no shutoff for coolant passing through the heater core that I know of. There is only an air mix door that when fully closed does not allow air to pass through the heater core.
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Old 06-09-2005, 11:52 PM   #3
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Randman1

Thanks for the reply. That helps me out.
Andy
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