Okay anyone have an answer for this one?
1978 W123 300D
Air conditioning blows cold air, but compressor never cycles off, nor does the aux. fan ever kick in with the A/C on. Well, actually, the aux, fan never kicks on at all at any temperature. When I first got the car, the aux. fan ran constantly, so I replaced the sensor at the thermostat. Fan stopped running constantly. If I jump the sensor at the thermostat, the fan will run.
Any ideas anyone??