I own a black 2001 jetta automatic 1.8t and recently when I try and accelerate it wont go past 30/40 (RPM) when I floor the gas pedal I can only reach about 27 MPH. To gain speed I have to push on the gas little by little and gradually my speed will pick up to about 60 MPH. What do you think is wrong with my car. (I accidentally shifted into 1st gear going about 30 MPH). Do you think this had any effect? I did not notice this problem until 3 days after that happened.