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About Robert Greenfield
Expertise
I can answer any question pertaining to B5 model Passats short of automatic transmission rebuilds. I may be able to field some questions about other late model VWs with crossover engines. I do not address performance modification questions.

Experience
I have been doing all my own work on my two Passats for a decade. I have been giving sound repair advice on PassatWorld.com for the past few years.

Education/Credentials
No relevant auto related degrees unless a BSME counts.

You are here: Experts > Shopping > Cars > Volkswagen > vw passat

Topic: Volkswagen

Expert: Robert Greenfield
Date: 12/4/2007
Subject: vw passat

Question
heater blows cold air only.

Answer
It could be air trapped in the cooling system, a bad thermostat or a bad water pump. Any other symptoms like unstable or high or low engine temperatures? If not, it's most likely that it just needs a bleed. It could also be that the heater core is plugged, but let's hope it's not that.

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