After I turn the car on. I the turn my air on and hear a knocking noise in the engine bay on. 2008 Honda civic lx. It speeds up as I hit the gas and stops when I turn the air off. What is causi g the noise.
Tuesday, July 24th, 2012 AT 11:46 PM
Could be two things, the ac compressor failing or the condenser fan failing. Let a shop listen to it for you to verify.
Wednesday, July 25th, 2012 AT 12:19 AM
Try un pluging the fan and then the compressor to see whick is making the noise