I have some problems with the AC. More exactly, the AC started to randomly quit cooling, sometimes working, sometimes not. The compressor will suddenly kick into action for a very short time, 2-5 seconds and then quit. I thought that the compressor was damaged, but it wasn't. I checked the pressures, all fine, next checked Lexia data measurements, all fine, too, with the Evaporator temp around 15 degrees but plummeting to sub zero after 2-3 seconds of the compressor working.
I suspected the Evap Temp sensor, it sticks in the right side of HVAC unit just beneath the glove box(LHD Car, see the picture). I maked a sort of a test. I pulled out the Evaporator sensor, start the engine and switched on the AC. The compressor worked continuously. I stick it inside it's place and the bad behaviour come back.
I replaced the Evaporator sensor with a new one bought from Citroen/Peugeot dealer. The new one comes without it's connector, so i cut off those two wires one at a time to prevent their reversal.
I start the engine and switched on the AC. The behaviour was the same, nothing changed. The compressor worked for 2-5 seconds and then It stops. After a few seconds, it start again and stops after 2-5 seconds. I pulled the new sensor out and the compressor worked continuously. I cannot use the AC with the sensor pulled out. I don't know what to do.
I have almost the same problem like in the link, but doesn't work after I changed that sensor: https://www.youtube.com/watch?v=X35a2D07GR8
- Citroen C3 evap sensor
