I recently bought a 2001 Volvo S60 manual car (82,000 mile). When accelerating at 2100-2300 rpm, I can feel vibration noise coming from the gas pedal(or maybe other parts close to it). After 2300rpm, the noise still appears only when I press the gas pedal to accelerate but the sound is notloud. I am not sure if this is the CV joint problem or the fuel injector or other things. Do I have to change something or just lubricate it? Please advise!

Thanks

 

Look where the steering shaft goes through the floor and see if the bushing came loose.