I am the owner of Daihatsu Applause 16Xi (A101) from year 1997.

My car has air conditioning system that doesn’t work correctly and in the range of 200-300 km not one car service could help me.
The air conditioner (compressor, condenser, expansion valve, evaporator) works fine and makes cool air without any problems. But after a short time of cooling 2 releys (I think) start turning on and off. (I think that one is used to switch the compressor and the other is for the expansion valve) The time between the 2 releys (switches) turn on and off is always the same, app 5-10 seconds, and then the rotation of the engine starts to decrease and increase. While driving faster it’s harder to notice, but if the car is not moving, the rotation of the engine decreases to 400-500 rpm and after a few seconds it increases to 1800-2000 rpm. This repeats constantly, the whole car starts to twitch, untill the air conditioner is turned off.

I know that there is a regulator on the right side of the car, under the instrument pannel, but the adjusting doesn’t give good results. The problem still remains.

Since I’m familiar with electronics, I would like to try and find the cause of the problem but I haven’t found a workshop manual for the air conditioning.

I would ask you for technical advice and I would appreciate it if you could tell me where I could find a Workshop Air Conditinoning Manual.

Best regards,
Sergej Farmakovski
Serbia