- Wed Aug 08, 2012 10:30 am
#313051
Hello
I have a 92 Civic Si sedan with D16A9 engine. I have a problem with the AC system. When I turn the AC on, the fan and the blower start to turn and the idle rpm increases, but the compressor does not engage. The relay for the compressor is tested and it works properly. The compressor clutch is tested and working. The problem seems to be electrical. There is a BLK/RED wire which runs from the ECU and sends the signal to the compressor relay. When I was testing the wiring, I grounded this wire for a second and released it and the compressor turned on, but after some minutes, when the car got cold and the thermostat switched the AC system off and the fan stopped and the idle rpm backed to normal, the compressor kept turning and did not stop!
The car is working good. The check light is not turned on. The refrigerant pressure is good. When I turn on the compressor manually, the car gets so cold. I have cleaned the wiring sockets near the compressor and relays and all of the sockets of the AC wiring system under the hood.
What is the problem? Anyone can help?
I have a 92 Civic Si sedan with D16A9 engine. I have a problem with the AC system. When I turn the AC on, the fan and the blower start to turn and the idle rpm increases, but the compressor does not engage. The relay for the compressor is tested and it works properly. The compressor clutch is tested and working. The problem seems to be electrical. There is a BLK/RED wire which runs from the ECU and sends the signal to the compressor relay. When I was testing the wiring, I grounded this wire for a second and released it and the compressor turned on, but after some minutes, when the car got cold and the thermostat switched the AC system off and the fan stopped and the idle rpm backed to normal, the compressor kept turning and did not stop!
The car is working good. The check light is not turned on. The refrigerant pressure is good. When I turn on the compressor manually, the car gets so cold. I have cleaned the wiring sockets near the compressor and relays and all of the sockets of the AC wiring system under the hood.
What is the problem? Anyone can help?