how do you know if you car needs a tune up?
i have 2002 chevy impala. bought it used. never had a tune up ever since i had it. its been almost 2 years now. my car makes the loudest noise when driving. sounds like loud wind coming from the engine. and if someone was to drive my car and im standing out i dont hear the noise.. you only heaar it when your in the running car. what the hells wrong with my car?