I think my computer might be shot. If i beat on my truck on the highway the service engine soon light comes on and it runs like crap. if the light goes off it runs fine. the emissions dude was beating on the truck and it happened, or atleast i think. How can i check my puter or is that even my problem? im supposed to get a 160 and i got a 188 on the hydrocarbons, anybody know what i need?