Thanks for the information. I will check the aspiration fan and the gang of 6 to make sure there are no vacuum leaks.

On the blower speed, even in the MAX cold setting, the blower takes its time to get to a gentle breeze, never high. Unless I force the fan to high via the switch.

Thanks again for the insight on how all of this works.

__________________
Regards,

Stephen

2006 E500 Wagon “Werner”, 114,500 miles
1990 420SEL “Mr. C”, sold
1984 300SD “Dieter”, 2nd owner, 66,000 miles
2011 ML350 Bluetec “Baron”, Sold
2011 R Bluetec “Fancy”, Totalled, RIP
1994 S500 Coupe, Sold
1984 300SD 236,000, Sold
1979 300TD, Black Mariah, flooded in Katrina