As suggested earlier, check the monovalve. Also take a second look at the sampler motor (sensor fan). It may be spinning, but not quite fast enough.

On the 560 the A/C would never slow the fan speed and literally froze me out (and I like it cold). Finally on a whim I replaced the sampler motor and everything works properly. Prior to replacing that motor I had clean and then replaced the temp senor with no improvement in function.

__________________
Mike Tangas
'73 280SEL 4.5 (9/72)- RIP
Only 8,173 units built from 5/71 thru 11/72

'02 CLK320 Cabriolet - wifey's mid-life crisis

2012 VW Jetta Sportwagon TDI...at least its a diesel

Non illegitemae carborundum.