I have a 2001 Toyota Celica GT 5 Speed:
Within the last few months, I have noticed an abnormal noise start to get worse and worse while driving. It is coming from the front, can only be heard in 3rd, 4th, and 5th (noticeably), and sounds like it is amplifying my engine revving.
The only way I can describe it as is sounding like an empty metal can attached to my engine that makes the engine sound louder when I accelerate. If I let off of the gas, the noise goes away until I hit the pedal again.
My dad listened and suggested it was the clutch, but why am I not hearing it in 1st, 2nd, and barely in 3rd? His theory is that there is no material left on the clutch and the sound I am hearing is metal on metal.