I think there's a problem with the wiring because the fan to the a/c only tiendas on when I remove certain fuses and the air compressor never kicks in.
1993 Mercedes-Benz 300SE Problem Reports
Most Reported 1993 Mercedes-Benz 300SE Problem Reports
A faulty mass air flow (MAF) sensor can cause erratic/rough engine operation and fuel economy issues. Since this sensor measures the actual amount of air entering the motor, when it fails, the engine control module (ECM) takes the wrong information and delivers incorrect volumes of fuel to the cylinders.