So I had my IAC replaced but my mechanic couldn't bring the Idle down because of a fried ECU. Had the ECU repaired for $140, plugged it in. Everything worked great until I drove the car. Two things were happening actually. From a stand still/complete stop or slow roll at a light or wherever, the shift from 1st to 2nd gear is not smooth. It kind of jerks into second gear and then more often the the the herky jerky gear shift is the RPM surge between 2.5k and 3k. Car is an 2001 SE Automatic. I'm obviously bringing it back in but wanted to get some opinions.