Can someone tell me if my diagnosis is correct? I am getting some serious whining noise from my engine. It is incredibly loud, like nails on a chock board screech. Strangely, the noise is only audible when my A/C is running. The noise sounds like it is coming from my alternator, not my compressor though. This makes me think my alternator is going bad.
I should also mention that a brand new compressor was put in a couple of years ago. The voltage gauge is reading 14V, and the A/C blows cold air. I just finished replacing my A/C tensioner pulley, A/C belt and alternator belt, which was done to eliminate another whine (or so I thought, the previous noise was never this bad and was present with the A/C off). After changing those parts, I drove around for a while with no noise until I turned the A/C on.
I am very confused now. The only other thing I can think of is maybe my belt tension is not correct. Does anybody have any ideas?
I should also mention that a brand new compressor was put in a couple of years ago. The voltage gauge is reading 14V, and the A/C blows cold air. I just finished replacing my A/C tensioner pulley, A/C belt and alternator belt, which was done to eliminate another whine (or so I thought, the previous noise was never this bad and was present with the A/C off). After changing those parts, I drove around for a while with no noise until I turned the A/C on.
I am very confused now. The only other thing I can think of is maybe my belt tension is not correct. Does anybody have any ideas?