When my car is running after a few minutes, it goes steady and then drops for a few seconds, and back to normal, then low for a few seconds again. It's weird. Do I have some vacuum leak or what? I'm not too familiar with stuff like this... Please help.

 

it could be a vacume leak, or maybe iacv needs cleaning. has it always done this, or did it just start happening? did you put any new parts on or mess with anything and then it started happening? you throwin any codes? whats your setup?

 

Just stock exept for Cold Air Intake... Nothing else...