1990 Audi 100 Quattro Heater Issues
12-14-2017, 10:22 AM
#1
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1990 Audi 100 Quattro Heater Issues
Hey there,
I have a 1990 Audi 100 Quattro I have owned the car for about two months issue free. The heat only comes from the defrost vents, even though ill have it set to Auto or Bi-Level...
its starting to get really cold up here in New York and I would love to fix my heater, is there any electrical diagrams so I can make sure everything connected properly....
Thanks for any help you guys can give to me.
I have a 1990 Audi 100 Quattro I have owned the car for about two months issue free. The heat only comes from the defrost vents, even though ill have it set to Auto or Bi-Level...
its starting to get really cold up here in New York and I would love to fix my heater, is there any electrical diagrams so I can make sure everything connected properly....
Thanks for any help you guys can give to me.
12-23-2017, 08:22 AM
#2
Defrost is the default failure mode..if something is broken..the defrost is what the system will do.
I don't recall is the 1990 models had a vacuum operated system (I think it is) or an electronic system with motors.
I would check the vacuum system..hoses and connectors.
You can test the system using some clues from here too: Climate Control Diagnostics and Repair
I don't recall is the 1990 models had a vacuum operated system (I think it is) or an electronic system with motors.
I would check the vacuum system..hoses and connectors.
You can test the system using some clues from here too: Climate Control Diagnostics and Repair
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