I've never heard the monovalve cycling and don't believe that it is audible inside the car.

I have found that my keyswitch can go too far over and the climate control will not work anymore.

The diaphram insert for pod #3 does look like it needs to be replaced.

The blower speeds are also controlled by the temperature control module if in auto mode. The temperature control module also controls some of the vacuum pods.

It looks like I need to finish my climate control tester...

__________________
Michael LaFleur

'05 E320 CDI - 86,000 miles
'86 300SDL - 360,000 miles
'85 300SD - 150,000 miles (sold)
'89 190D - 120,000 miles (sold)
'85 300SD - 317,000 miles (sold)
'98 ML320 - 270,000 miles (sold)
'75 300D - 170,000 miles (sold)
'83 Harley Davidson FLTC (Broken again) :-(
'61 Plymouth Valiant - 60k mikes
2004 Papillon (Oliver)
2005 Tzitzu (Griffon)
2009 Welsh Corgi (Buba)