Hello all Hope I can tell my problem in right words.The problem with my s3 is when I turn it on in the mornings(when the engine is cold) the rpm gauge keeps coming and going between around 700 and 1300 rpm for around 1 minute. And when the gauge comes down to 700 rpm the the car acts like it is going to stop and the gauge jumps again up with a shake in the car. It does never make the same thing until next morning. Every time I take it to service they clean the throttle valve but the problem goes on. Need help..