I first had an erratic idling, esp when very cold. the shop could not find any thing wrong. after i ck'd, i found the hose from the idle control valve to the throttle body, cut in half. After replacement, idle was good. a week later, now, I have a very long start cycle, and the engine sputters a bit after it finally fires. the A2 code is 2-3-1. Just before this start thing, I heard a constant clicking near my left door, and it would run down after the car was switched off. Now the clicking is gone and the start is rough...