Hey guys,
Need some help. Just recently I've noticed my maxima is idling pretty rough. Feels like the engine is knocking. Now this is only when i'm stopped. Otherwise the car runs fine. It has me kinda worried. Any one have any ideas what this can be? And does anyone know of any good mechanics in the LA area. I want to take my car in for a tune-up and looking for a place i can trust.
I have a 2004 Maxima, 52K miles.
Please Help!

 

wheres the knocking coming from could be anything from a belt to a sensor.

 

Vacuum leaks, exhaust leaks can lead the ECU to correct erratically the fuel mixture. Try to read your ECU codes.

For vacuum leaks, some suggested using a propane torch. The propane will cause the rpm to change if it is sucked in from a leak.