UK Car Repair: Daewoo Nubira 2000 A/C, daewoo nubira, coolant temp

Question
I own a Daewoo Nubira 2000 (USA). The air conditioner doesn't work. I had replaced the A/C condenser and the pressure sensor but still no result. I bypassed the A/C relay the clutch engaged and it started blowing cold air. Is there any other sensors that can prevent it from working?

Answer
Before replacing parts it is worth checking to see if they are faulty. This can be done by by-passing the particular switch and see if the system functions. There are many switches/sensors on your car. The pressure switch you changed screws into the AC pipe. The ambient temp sw is in front of the radiator; the coolant temp sw is fitted under the right lower dash panel; Sun sensor is in centre of dash at w/screen; and the in car temp sw on the controller.