I have been dealing with this issue for a little over a month now. I have noticed that these codes started coming up once the weather got cold. However, I mainly have problems when I turn it on after it has sat in the cold over night. It has a very rough idle but once I let it heat up for a bit it works just fine. It runs great on the road. I have already cleaned the MAF sensor on multiple occasions. Also, I have changed the fuel/air filters and have added Fuel Injector and Carburetor Cleaner to the gas. Nothing has worked. I wonder if perhaps the fuel injectors are bad or even the fuel pump. Or maybe even a leak somewhere, although I haven't heard any hissing. Has anybody else had this problem. Any help would be greatly appreciated.