i changed my radiator, spark plugs, oil filter, air filter, oil, thermostat, and oil car ran fine before this happened. the car is still running fine seems to maybe be running alittle rough it might just be me. anyways the main problem is when i turn the car off it sutters for maybe a second.

the car has never overheated
the car always starts on the first try
the car shifts fine.

any ideas thanks.