[W126 Coupe] Air Conditioning Diagnosis

[Dan Landiss]

on 6/11/2007 4:07 PM Dick Spellman wrote:

> So, was the low side pressure within spec based on outside ambient air 

> at the time you tested?


I have no charts. It turns out that "25F" on the gauge coincides with 
"25psi" on the low pressure side. I'm afraid you are right about the air 
flaps.


> There is also the much difficult to get at (with pass airbag) vacuum 

> element that directs air flow between center vents and defrost vents.  

> This too fails and you hear the blower running at high speed and feel 

> little air in the cabin.  That's because it fails over to the darn 

> wind screen when the leak on the diaphragm occurs.


Switching from the maximum cooling position (up and down arrows on the 
button are both white) to the next position (is it white for the down 
arrow only?) definitely changes the air flow. The former results in a 
LOT of air on the windscreen, and the latter almost none.

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"We have become morally ill because we have become accustomed to saying one thing and thinking another."  --Vaclav Havel <http://www.landiss.com/civillib.htm#1Jan90>

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