ok sounds like a vaccume problem follow this steps; 1. put your finger where the hole is while the car running if it sucks it in theres your problem. either plug it or find the loose hose. 2. theres a sensor called AICV(air idle control valve) its located in back of your intake manifold. remove it, theres 2 holes one is open another has mesh, clean it with brake clenear try not to use carb cleaner it might eat up the little gaskets.ohh this sensor also has 2 hoses with anti-freeze. if you want add a little gasket maker to seal it good. 3.it might be a busted intake manifold gasket so get some started fluid and while your engine is cold and running spray a little where the intake manifold and head bolt on together. if you notice a diference like revs go higher than normal it means its the intake manifold gasket. do this only when engine is cool down since starting fluis is highly flamable. 4. after finding your problem fix it remove any code from your computer by removing the fuse for the clock for about 1-2 minutes or just unplug the battery. if you unplug the battery your original acura stereo might get security lock....