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Registered User
Join Date: Jul 2011
Posts: 1
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No heat at highway speeds but heat at idle speeds
Hi guys, have a question and a problem. During the winter months - my hvac unit in my 2009 328xi coupe only blows cold air at highway speeds. It blows warm/hot air at idle or slow driving speeds. Dealer can not figure this out and have dealt with a cold car for 2 years now in the winter. Thermostat replaced last year. Could it be the heater valve (monovalve)? The AC works fine in the summer. Help. Suggestions?
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07-23-2011, 10:10 AM
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