Hello I'm from Nigeria. I have a 2012 accent with 100,123km on it. At idle, the rpm needle is just at the mark below 1000rpm. The AC compressor doesn't engage when turned on from inside, though the light on the AC button inside doesn't go off once the AC knob is turned on. Whenever the AC compressor is connected directly, it comes on but the engine jerks and goes off. Someone please help. The AC fan blows just fine though it blows warm air since the compressor ain't engaging.