[diesel_mercedes] 123 climate control issues

 

Hi all

Thanks, in advance, as always, for your thoughts. My 82 300D turbo is having auto climate control issues. Sometimes it works totally fine - vent, a/c, defrost, all working as it has for the eighteen years that I have had the car. However, occasionally the fan does not come on - i can hear the vent and defrost flaps moving and can hear the ac compressor kick on as i push the different buttons, but no fan. Later the fan will start working. Also, not sure if this is related or not, but I am still having vacuum issues. When I start the car the air flow through the vents is low and sometimes the locks do not work, but quite consistently, if i turn off the acc, drive for about thirty seconds, then turn it back on, everything (acc, locks) all work fine, until i next shut off the car. Does any of this make sense? The car has 167k on it and the acc pushbutton assembly and fan, etc., are original.

Thanks

Andrew

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