yesterday i was driving around town with a friend who drives a 79 camaro. we were racing aganist each other, nothin to crazy, when my engine light comes on. it started blinking at first then stayed lit. im like "oh this is just great". i was pushing the ls pretty hard with 87 octane. i know, bad idea. so i eased up from that point and ran out the rest of the tank to about 60 miles to empty and then filled it up with premium. i did a good amount of driving that same night and the engine light was still on but the car was running normal. the next morning on my way to work, my check engine temperature light comes on and the temp gauge shoots up. the reduced engine power thing came on as well. now im really like ok wtf? keep it mind i had just had an overheating problem due to a busted thermostat, which i got fixed. but anyway a few moments later the temperature thing went down and it was fine, but the engine light is still on. i just find it weird that the car ran fine the rest of the night and then the temp problem is back. please help me out here.