On Sunday I charged the AC which hasn't worked in two years. Engine ran a little rough at first when AC was on high but that seems to be going away. On Monday I replaced the purge solenoid, hoping maybe that would fix the gas cap off code. On Tuesday, after sitting over night the engine had a hard time starting, sounded like it wasn't getting fuel. But after that it started fine until the nExt time it sat for a while then it did it again. Any ideas?