Rx-7Ninja

i just fixed my shifter and got a NEW ALTERNATOR AND NOW IM DRIVING THE CAR AND IT SOUNDS LIKE IT S AT ITS HIGHEST PEAK POINT NO MATTER WHAT GEAR IM IN. IT HAS A HIGH SOUND ALL THE TIME. THE CAR IS A 1986 RX7. AND I NEED MAD HELP. I THOUGHT IT WAS THE THROTTLE BUT ITS NTIOT THAT. THEN I THUGHT IT WAS THE TRANNY OR SPARK PLUGS.WELL I DONT THINK ITS EITHER. SO IM THINKING IT MAY BE THE CLUTCH TELL ME WHAT U THINK.