alrighty i understand the warm/cold idle thing, wells here my situation: my car would idle at whatever b4, but now when it idling ( i think too low) like 300ish, its much shackier, not horrible but you used to never feel any vibration, when i increase the idle ever so slighty with the pedal, its fine and smooth like around 6ish. Here's another wired thing, when its real warm sometimes when the idles low if i have my flashers on, the engine moves faster and slower with the flashing, very little but i notice it, like 50 rpm's so whats up with that, and i was hoping to manually jsut increase the idle slightly, is this possible? Thanks. (sorry for the story)