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Climate control issues

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Climate control issues

  #1  
Old 02-11-2019, 09:41 PM
1st Gear
Thread Starter
Join Date: Feb 2019
Posts: 1
Default Climate control issues

Need some help. Just replaced the heater core in my 99 a4 2.8. When to use the heat and only get heat out of the center vent. I switch to the defrost and I lose heat and still blows out the center vents. Can you have the plugs switched?
 
  #2  
Old 02-12-2019, 09:40 PM
A4TurboGuy's Avatar
2nd Gear
Join Date: Jun 2013
Location: Cincy
Posts: 1,056
Default

If I remember correctly, I think you can pull the carpet back on the passenger side (where the center console meets the footwell) and see the actuators. If that's true, you can run the heat and see if the actuators are working when you switch modes.

I think the easiest first step however, would be to run your A/C (of just the fan) and see if you're getting the exact same results. If you are, then you have a problem with either the control module, the ducting itself, blend door(s) or actuators.

G/L
 
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