I just got my car back from the mechanic, he installed a new opti, and it worked fine, i drove it to work and home, i turned it off after driving like 10 minutes and then 5 minutes later i started it and the idle was sputtering and eventually stalled. I sat there and fought with this problem for like 10 minutes, then i sat and played with the gas and the idle evened out, and stayed good. I dont know what would have caused this, anyone?
I also have ses code 83.