SUCCESS ! IT WAS THE SHRADER VALVE AND NOT BEING CORRECTLY DEPRESSED.

I got two cans of R-12 which were 12 oz each. I also got in one can of oil, 4 oz. The oil can stated it was for R-12. All of this stuff was NOS.

I drove a little outside. I got 41 F* and I am thinking my system is low on FREON. I am thinking my cabin blower is on its last leg right now. Making a bunch of noises ... So, as long as it makes it til this upcoming weekend, I am fine with that.

THANK YOU ROLL GUY !

I am thinking one more can of R12 at the 12 oz flavor will do it.

I am going to buy one of those clip on thermostats. I used the laser gun pointer deal currently.

No more soaked shirts by the time I get home from work !

John and I pulled that blower and lubed it about a year ago. It was running pretty rough, the lube helped as a band aid. Sounds like it might be dried up again. It was so bad it melted fuse 8 (talk about a panic, smelling that melting plastic ) so that is why the blower is wired to fuse 5 now. I would stay off of high speed until you get it fixed.

You might want to start scouring the P-N-P for another one...or there is always the Volvo blower motor trick (Volvo used the same supplier for their motor as MB and there is a much cheaper motor intended for the Volvo that crosses over).

__________________
The OM 642/722.9 powered family
Still going strong
2014 ML350 Bluetec (wife's DD)
2013 E350 Bluetec (my DD)

both my kids cars went to junkyard in 2023
2008 ML320 CDI (Older son’s DD) fatal transmission failure, water soaked/fried rear SAM, numerous other issues, just too far gone to save (165k miles)
2008 E320 Bluetec (Younger son's DD) injector failed open and diluted oil with diesel, spun main bearings (240k miles)

1998 E300DT sold to TimFreeh
1987 300TD sold to vstech