Not knowing your mileage - this is a crap shoot.
Let me add some info:
1) If you have doubts whether your blower motor or your regulator has failed - 90%+ chance it is regulator. MB later updated new blower motor and new regulator for the new motor - new regulator does not work on old blower. Go to eBay since China made regulator for W140 will fit - eBay sellers sell the kit to replace the regulator.
2) Since your blower isn't working you can't tell if your compressor is working or not - so put that to the side for the moment.
3) If your original idler pulley (small plastic pulley upper passenger side) snapped - then it's a very good bet your belt tensioner is also failing. Original belt tensioner was later found to be faulty design. EZ DIY and Litens is original brand tensioner (autohausaz.com) and DON"T use the China no name part, it's junk.
For "driveability" you need to replace that tensjoner, see the sitckies for the DIY, real easy job.
4) With new idler pulley, new belt tensioner, new belt - you are good to go
5) When you get your blower fixed, then you can start to diagnose your air con system - DON'T go replacing compressors and such until they are identified to be the problem..
Oh man, I thought I'd said 182k miles. My bad!
1) I ordered a new regulator already, it should be here Saturday. I planned on installing it the same day so that when I took it in Tuesday it would be able to see if the compressor works or not. Also, I have the new blower system so that made it easier.
2) See above
3) I have the new tensioner and it does not have any play, so I assumed it was okay. I'll have the mechanic look at it just to make sure. But I have driven the car about 50 mi so far and the only issue I'm seeing/hearing seems to come from the A/C clutch
5) Once I fix the fan etc I'm sure it'll be easier to figure out the A/C issue. But the sound coming from that pulley is my main concern. As someone stated above it may be a bearing sound. I'm not exactly sure what that is so I can't correctly diagnose it. I just want some ideas of what I may be dealing with.
The reply is much appreciated!