Have searched the threads but cannot find info on this specific problem.

Well my A/C suddenly stopped functioning. Discovered this after returning from vacation. The A/C used to work very well up to this point. I guess the car is exacting revenge for being parked outside for 2 weeks

Observations so far;
1. No cold air from center, side or any other vents with A/C on - used to be ice cold.
2. Compressor engages/disengages when A/C is switched on/off at dashboard. However, the insulated A/C line with the schrader valve - under the hood on drivers side - does not get cold when the compressor is engaged, so I am currently discounting an electrical problem.
3. A few tiny drops of oil escaped under high pressure when I attempted to unscrew the black schrader valve cap - located on the insulated A/C line - (see picture). I quickly re-tightened the cap to prevent further pressure/oil loss. I am sure that in the past I have undone this valve cap without incident.

Any thoughts or suggestions on what could be wrong here?
Car is a 1991 190E 2.6 with 137000 miles.

Thanks in advance.

Attached Thumbnails

 

__________________
Neil.


1991 190E 2.6 170k
1995 E320CA 57k
1999 Chevy Tahoe 98k
2000 R1150GS 45k
1983 300CD 178k - sold, but not forgotten