Our 2005 Tucson GLS 2WD started hesitating and quit on my wife about a week ago. The free roadside assistance towed it to the dealer who gave my an encyclopedia of recommendations to the tune of about $2K including replacing the license plate light bulbs due to dimness. The only legitimate need was plugs and wires which they wanted about $500 to replace. I picked it up and took it to a parts store who scanned it and found misfires on cylinders 1 and 3. I have replaced the plugs and wires on all six and now it won't start. Well, it starts, revs like normal, and then immediately dies. I can give it gas and keep it running but it is not driveable. I am assuming it is a sensor out but I am not getting any enigince codes. Any help or others with problems?