2008 Nissan Altima Q&A

2008 Nissan Altima Question: Why is there a knocking noise when the a/c is on?

You only hear the knocking noise from time to time and it is only when you come to a complete stop. You turn the a/c off and the noise stops. -
Answer 1
poss compressor is going bad due to lack of oil,have it ck"d -