Can someone please help,i recently bought athis car and have issues badly,car doesnt idle and keeps surging when driving slow,goes through alot of gas and when at a halt i can smell gas and the exhaust is really loud,also cuts out when coming to a halt and going again..have been to 2 different mechanics in a week and one said it was the ignition coil and another said it was a faulty computer,went with the faulty computer and got that replaced,but doesnt seem to be doing what i would have expected after paying a big price..PLEASE HELP..