since last night, my car has been stalling when coming to a stop. it's not all of a sudden, i'll come to a stop, then after 15 seconds or so, it will slowly drop lower the revs and stall. it's more often in Drive, but it happens in Neutral and Park too. it doesnt seem to be the idle control valve, as when you turn on the air con the idle goes up a bit, however the idle does seem to have gotten lower over the past couple of weeks. any other idea's? tomorrow i'm giving the car a oil change, and will probably do the spark plugs to rule that out.