Have 2012 F350 4WD Cab chassis with flat bed. 4.10 rear gear, auto. When pulling 15,000 goose neck hot shot load, engine has no power or throttle response. Gets about 6 MPG at 70 MPH. 70 MPH is about wide open unless I get a run down a hill. Has 94,000 miles, stock motor. Ford has updated computer twice.
Keep getting P2059 DEF engine code. Code will stay on for about 500-600 miles and then go out. Usually comes on when pulling a load. goes out the next day when trailer is empty. Empty gets about 8.5 MPG. Bobtail empty trucks get 11.5-12 MPG but still does not have much power or acceleration.
Any ideas on what is going on? Ford dealer no help. What can I do to to motor and still pass DOT inspection?
TIA
Rick
Keep getting P2059 DEF engine code. Code will stay on for about 500-600 miles and then go out. Usually comes on when pulling a load. goes out the next day when trailer is empty. Empty gets about 8.5 MPG. Bobtail empty trucks get 11.5-12 MPG but still does not have much power or acceleration.
Any ideas on what is going on? Ford dealer no help. What can I do to to motor and still pass DOT inspection?
TIA
Rick