I have a 2005 Nissan Maxima SE. When the a/c is off, the car makes a loud and complex clacking sound from under the hood.
This problem began this morning when I went to work, and I thought a belt bearing was failing. But the noise does not increase in frequency or decibels when rpm is increased, so that made me think a/c, and so when I got in the car tonight I turned on the a/c, and sure enough, the noise stopped. What's going on? Will this cause a breakdown or ruin my a/c if I just leave the a/c on? Can I fix this myself (I can do part replacement if I can get to the part)?