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Stonebrew
New User
Apr 19, 2007, 8:58 PM
Post #1 of 2
(1190 views)
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Heater core problem?
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Need help in diagnosing a problem with a 87 Buick Park Avenue.
Car overheats and coats the inside windshield with what looks like antifreeze. This happens with or without the a/c or heater on. Sounds to me like the heater core but always thought that anitfreeze only went into the heater core once you fliped controls to heat. But what about the thermostat? could this also cause these symptoms?
Any info you can give me would be greatly appreciated. Thanks in advance!
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DanD
Veteran
/ Moderator
Apr 20, 2007, 5:31 AM
Post #2 of 2
(1184 views)
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Re: Heater core problem?
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No it’s likely the heater core; some models/manufacturers use a water shutoff valve to the core but this 87 Buick always has coolant flowing through the core. It uses an air blend door between warm or cold airflow, to adjust the temperature inside the passenger compartment.
Dan.
Canadian "EH"
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