I have an idling problem and the cel code tosse a number 14(electronic air control). How do i fix this? It also tosses another code 91 (fuel tank circuit ). I don't know what this one does except for that it build pressure in my gas tank/cap.

 

Fuel pump might be going downhill. Maybe.

Check the usual things: fuel filter, plugs, wires, cap, rotor, wiring... You might check our your main relay as well (I don't think the relay throws a code when it goes bad though, but I may be wrong).

 

Yeah I just bought the car 2 1/2 months and its giving me trouble. It's all stock except for spark plug, radiator and thermostat.

 

i had put new ground wire and injector cleaners and seafoam technique on the car.