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About Rick O.
Expertise
Classic, aircooled (rear engine) 1949-1979 VW's, specializing in electrical problems, fuel injection, and Type 181 "The Thing". NOTE: I have limited experience on water-cooled VWs (Rabbit, Golf, Jetta, etc...) but I am glad to help to the extent of my knowledge, due to the fact there are currently no other experts registered for these models.

Experience
15 years of aircooled VW ownership and maintenance.

Publications
Wikipedia, VW Beetle

Education/Credentials
Retired US military Electronics Tech/Master Training Specialist, Civilian Computer engineer.

 
   

You are here:  Experts > Home/Garden > Auto Repair > Volkswagen Repair > VW Passat AC and Heat

Volkswagen Repair - VW Passat AC and Heat


Expert: Rick O. - 12/31/2008

Question
If the AC compressor needs replacing will the heat not work as well?  If not where else should I look?

Answer
Paul,
 The A/C compressor is not directly related to the heater system.  However an electrical problem can cause the interior blower fan not work, which would affect both systems.  
 Heat is provided by radiator coolant routed by 2 heater hoses through the interior "heater core" under the dash, which gets hot, then the fan then blows air across and through the vents.  Possible causes of no heat are the heater control cable, the heater control valve (in the engine compartment inline with one of the heater hoses) or there is a clog in the system (needs to be back flushed).  Using non-VW approved coolant can sometimes cause clogs.

Rick

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