My 99 durango 4X4 5.4L w/auto transmission will not start. It died at a stop light. Towed home and connected the test device I purchased at autozone, there are no error codes. Using starting fluid the engine will start. I have not had a problem with my alarm but I followed a procedure to disarm by locking the vehicle and turning the key in the door to the left to disarm the alarm. Still wont start. Could this be the fuel pump or the fuel filter? Could the use of ethanol mixed fuel desrtoy the fuel lines?