AC causes rough idling and knocking noise?
 

Hi guys. i have a 2005 AT rx8 with 82k miles on it. the car runs flawlessly without the AC on. When it is idling with it on, it is very rough and sometimes dies. There is also a loud knocking noise you can hear from inside the car. As soon as i turn the ac off, all these issues go away. While driving with the ac on it runs fine. its just when i stop and idle that it is messing up. any ideas on what this could be? :dunno:

Sounds like the compressor is going out; have it checked out. Check your motor mounts too.

+1
Check motor mounts

how do i check the motor mounts? and for the ac compressor im guessing i have to take it to the mazda dealer and have them look @ it?

thank you dark. i will look into this tomorrow with my dad. hopefullt its just the mounts and not needing a new ac compressor.

*sigh*

Why can't people just search ... why ...

Cus it's easier not to..... and some fool will answer... :uhh:

lol darkbrew does all the searching for us in this forum duh.