I recently finished a restore project on the intrigue. Besides the mess of suspension and brake parts I also replaced the fuel pump and valve cover gasket. Since my build I have tossing an 0440 "evap system malfunction" and noticed a 2-3mpg decrease. I have double checked everything under the hood and the harness is entirely reconnected, I really don't think I damaged anything while I was in there. I have tried a few things with the gas cap tightness with no luck. Because of vague the code is I have no idea where to start. Anyone else have issues like this? Could it be the system just disagrees with the new fuel pump?