Every time I turn the air conditioning on, rpm drop and the car feels a bit tight; I consider the compensator is not activating to maintain rpm. It's been a year and a half since I started having this little problem. I was told it was the IAC, but also that the computer was not sending the signal. I had to raise revolutions a bit so that the engine did not stall nor the vehicle tremble; but I think this way the vehicle consumes more fuel. I really need an electrical diagram to solve the problem. Thank you.

The Car drives for a while and later, the lights go dim, the Car begins to Jerk and finally Stalls. Any attempt to start the Engine results the Starter Motor making a Clicking sound. After a couple of Hours, the Car will start, but the same result will repeat itself. Kindly help.