Hello.., I have another problem with my 93 Mercedes 300se climate control won't operate on high speed. but here is the weird part. I just change the blower motor and regular. it works on high speed when I first turn the a\c on then slows up a bit. what can this be any ideals thank you guys.

Unless you are talking about putting it in manual mode and ramping up the blower, that is the way it is supposed to work. Comes on "hi", starts looking at the cabin temp then regulates the air flow to maintain that temp. It is not supposed to run on "HI" all of the time.
Anziani
'97 CL600 51K