I need some help from the experts please! I wen't to work today driving normal and when I got to work I parked and shut the engine off. The truck set for 5 hours before I started it for lunch but now the damn thing idles rough and I got a MAP code. I cleared the code and let it idle for about 10 minutes hoping it would either code again or start idling normal. While I was looking at everything under the hood I put my hand on the intake plenum and the 3rd runner from the throttle body was pretty damn hot compared to the rest. I said shit, I must have broke a valve spring or a valve is stuck. I pulled the valve covers off in the parking lot and everything still looks like new, nothing is broke or seams to be bent. I put everything back together and cranked it up and it idled normal for almost a minute before crapping out again.

Here's a little bit of log info at idle:
RPM - 919
Inector duty - 3%
MAF - 1.51
MAP - 60
Timing - 14.0
TPS - 0 %
Injector B1 - 4.5
Injector B2 - 4.3
O2 B1 - 217
O2 B2 - 846
LT B1 - Peg out at 25
LT B2 - Peg out at 25
ST B1 - 0
ST B2 - 1.6

Any thoughts on this?