New on b15 haave a 02 spec v drove it for 2 weeks perfectly fine but recently when you drive it on the highway on u put the clutch in it wont idle correctly its go from 1000 to 2000 & at times the engine jus stops producin power still runs it jus wont pull hard plz give me any suggetions as to what may fix it 1st car ever it kills me to see it like this.