I am having an issue and have no idea what to check next. This issue started a month ago. I got a check engine light and read the code. Bank 1 and back 2 system too lean. I was told that was most likely the Mass airflow sensor or a vacuum leak. I pulled the MAF and cleaned it. The code went away. Maybe twice a week my check engine light would come on but would not be on the next time I started the truck. This morning I was driving, about a 20 minute drive after driving 2 or so hours yesterday, and my truck started acting up. It would run rough at idle. It would bog down as I came to a stop and then jump up to 2000 RPM before bogging back down. Sometimes it would cycle through and bog down over and over before dying and other times it would die the first time it bogged. The weird thing is that it would idle high, maybe 2000 or 3000 RPM while I have the Clutch in while moving. As I come to a stop the RPM goes down and Would die. Today I replaced the Idle Airflow sensor and It helped a bit. It dies less and will sometimes idle at 1000 RPM for a few moments before bogging revving and dying. Anyone else experience this and or have any Ideas. Any help would be much appreciated. Thanks