I've got a 1991 Dakota v8 automatic regular cab shortbed 2 wheel drive. My fuel ikeage suddenly took a turn for the worse. I was getting about 14 average and all of a sudden I'm at about 7 mpg. Truck is all stock except dual flowmaster exhaust. plugs wires cap rotor pickup coil fuel filter air filter are all fairly new. Thx

 

Ay codes? How many miles? Might be time for o2 sensors. Other things come to mind: dragging brakes, clogged catalytic converter, etc. Eliminate things one by one.

 

180k I havent checked for codes yet. Elimanated converter a while back. I'll see if I can check into brakes this evening