Ok so first off I have to explain what is wrong with my car before this happened. I have a cracked motor head.. my car leaks oil into the coolant tank.. so really my car shouldn't have been running for so long in the first place. Its been that way for about a year. But today I think it has had it because while I was driving it the car jolted and the check engine light came on and the 4th gear thing started blinking on the dash board. So I was wondering if that is just the motor going or the transmission or what.