The electric fan(s) not working would cause your exact symptoms. It should come on a few seconds after the the compressor comes on when it gets up to operating pressure. Remember cooling at slow speeds (car and engine) is the worst case condition for the air conditioner. Sometines when I'm stopped in traffic I'll rev the engine up a little to about 1000 or 1500 rpm to keep the compressor and fan spinning a little faster, that seems to help a little. It brings the oil pressure up too.
And a question: Is this a new condition or has the car always done this?
I noticed you have a 380 SE euro. When I was looking to buy a Mercedes I looked for standard transmissions. I found one just like yours with a 5 speed, but it was too big and too much for me.
[Edited by Jim Anderson on 06-04-2001 at 04:37 PM]
5 speed '91 190E 2.6 320,000 mi. (new car, fast, smooth as silk six, couldn't find any more Peugeots)
5 speed '85 Peugeot 505 2.5l Turbo Diesel 266,000 mi. (old car, fast for a diesel, had 2 others)
5 speed '01 Jetta V6 (new wifes car, pretty quick)
5 speed '85 Peugeot 505 2.2l Turbo Gas 197,000 mi. (wifes car, faster, sadly gone just short of 200k )
5 speed '83 Yamaha 750 Maxim 14,000 mi. (fastest)
0 speed 4' x 8' 1800 lb Harbor Freight utility trailer (only as fast as what's pulling it)