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Old 06-17-2014, 09:47 PM
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Join Date: Jun 2008
Location: Rochester, NY
Posts: 180
Arghhh...yet another A/C question (default mode)

Happy Summer,

First a word of thanks to VSTECH's efforts to teach us the right way of charging our A/C systems

And to DMORRISON for his tutorials on changing vacuum pods, although my hands are still healing from that center pod I changed without pulling the dash. It's possible but painful to do.

My current challenge:

My car is a 1985 300D-T
A/C is running cold but flaps are in default mode (blowing air to defrost and side vents only.

What are the causes of this? Maybe in priority of likely solutions?

I have reflowed the solder joints on one ACC pushbutton unit - no joy same default condition

I swapped in another ACC unit (unknown condition) - no joy same default condition

I've spent many hours searching online without clarity of what is to be addressed next.

Would a faulty pod cause a default mode? Switchover Valves? Temperature controller?

It's kinda fun driving around with my dash disassembled but the wife would really like her seat back and the footwell free of parts!
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1985 300D 172,110mi and goin' strong
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