i recently had my car over heat, smoke into the cab the whole 9 yards. i just had a new radiator put in because of a crack in the plastic part close to the washer fluid cap. now my check engine light is on it was read for a misfire, temperature, & low coolant. 2 were corrected & person fixed it. well now it has started to over heat again with temp Gage reading over 260, and i am dripping coolant on passenger side near the from of the wheel, also i was steaming from the cap. could anyone tell me what could cause all these coolant problems and a way to get my car back on the road?