1995 Isuzu Rodeo Question WOn't start

My Rodeo had a sensor over heat and shut the truck down a whilke back. When the engine cooled off it started and has not done it again since the weater cooled off. Now the truck won't start. It is trying and right on the edge of running but won't quite take off. What would be the most common sensor to cause this problem? I guess I cleared the comp codes a couple weeks ago when I changed the battery so I don't know where the system failure was.