I just went through all of this today. The only difference is that my compressor was coming on and the A/C was barely cooling. When it is 90+ out you could not tell it was on at all.

1 can of R12 later the A/C blows 39 degrees out the vent on low speed, 42 in auto. and medium speed and 45 on high speed. Sitting and idling in traffic or with the car just sitting there I'm getting 50 to 55 out the vents. This is in humid 93-94 degree weather.

Be sure to check your condenser coil. I actually removed my Aux. fan and spent a good hour straightening the fins on the condenser. Then I hit the condenser, radiator and oil cooler with some soap and a high pressure hose. I think this helped me too.

Be sure you know what is in the system before you charge it. Don't just assume what refrigerant is in there or you will screw things up. If it was actually converted, there should be a sticker somewhere stating that it was in fact converted.

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AJ

1985 300D (SOLD)