AC problem
 

AC blows ice cold when I first start. In hot weather AC is fine then fades out, then comes back, then fades out, then comes back. My 90 MB has an overpressure switch which will cause compresser to kit off if pressure is too high. Is this what is happening here? or is there a malunction in the temp control? Where is the overpressure switch located on this car? Any other ideas or anyone have a similar problem? Thanks

Well... I am also having the same problem of AC not working in my car. So could anyone help us??