hi..i just recently got my motor rebuilt with new crank and 1 connecting rod.my car is runnin good.the prob is my CEL shows.when i turn the car over it goes away and comes back like 20min??i just replace a brandnew knock sensor?i might have to reset my ecu?my battry light goes on and off?and i got my abs light on too?help!!holla at yo boy!!!

 

Look at the FAQ thread stickied at the top of the forum. The first thread in there discusses how to pull CEL codes.