FWD DeVille 1985-2005, Fleetwood, and 60 Special
I have codes P0440 twice and p0300 so I have a random multiple misfire and Evap emission control problems. Sometimes it won't start on the first try but always on the second. I have a check gas cap error pop up on my dash. I don't know what's going on with it or what to fix. The hose going to my...