I have recently noticed that my car makes a humming sound while idling in D4 with the air conditioner on. If it is making the noise and I put it in park, it immediately goes away. It also goes away if I turn off the A/C.

In my RSX, it made a simliar noise and they said that it is the compressor and that Honda comressors are known to make this noise (this was after I had a whole new A/C system put in the RSX.

It is not loud, but it is noticible from inside. It makes a groaning sound and it is in some way attached to the A/C compressor.

My question is does this have to do with my timing belt or water pump, or is this normal? Is the A/C putting strain on something else that is causing this noise?

 

Mine makes a noise kind of like a fan and you can diffenently hear it but its been doing that since I got it and its never given me any problems.

 

mine makes noise also like a fan...not sure wtf is wrong?

 

This car seriously makes more strange noises and clicks than any other car I've owned...they all seem to be normal though

 

mine is like a fan noise but no where near my fan sorta near my battery or below it
and i can def hear it inside it sound like that even if my air condition is on or off..