AutoAid solved a very difficult problem with our Saturn L200. The automatic transmission was shifting with big bumps. Sometimes the car wouldn't accelerate at all from a stop. Sometimes it would idle fast. Turning it off and re-starting always made the symptoms go away. So, we thought it was the engine control computer. Replacing it didn't help. AutoAid spent a couple hours at no charge searching for the problem, and finally found that a bad throttle position sensor was putting incorrect information into the computer. Replacing the sensor fixed it. Over the weekend we took it on a 170 mile round trip, with no problem. So, I'm sure now that it's fixed. -- J.S.