2003 Toyota Corolla - Sound while driving

[stevecrissi]

Hi, Everyone.

My 03 Corolla S - 5 Speed has developed a sound while driving, only when giving it gas. The sound goes away when I press in the clutch. It doesn't make any unusual sounds while parked and idling.

The sound, sounds like a knocking noise. At least to me that's what it sounds like.

My car has 156k miles on it.

The car idles fine, rpm's are good on while driving, temps good and still gets really good gas mileage.

Does it have something to do with my clutch, since the noise goes away when I take my foot off the gas, or press the clutch in?

Is there something I should be checking?

All my fluids are good, brake/clutch, oil, transmission fluid, radiator, etc.

Thanks for any advice and help.

I appreciate it.

[veedubmechanic]

Sounds like a bad throw out bearing. At 156k it's about time for a clutch job anyway

[stevecrissi]

I thought a TOB would be noisy all the time?

Also, I again will not hear the noise when I remove my foot from the gas pedal. It only happens when I apply gas using the gas pedal while driving.

It will not happen if I am parked applying gas by the pedal.