I have a 2000 chevy cavalier 2.2 with 66,000 miles, and when i'm driving for a little while of speeds at around 45-55mph, my car cuts out, I will sit on the side of the road for a bit, and then it will start right up, I can't afoord to replace things that don't need to be replaced, if you have any suggestions please let me know. sometimes the gas peddle vibrates, not substantially though.