If its a manual transmission then what you likely have is a worn whats called a dual mass flywheel. This flywheel contains a heavy fluid that prevents engine oscillations from transmitting thru the trans. Over time the oil escapes out causing the internal components to hit their end stops, thereby creating the knocking noise. An experienced tech knows how to check for wear. Replacing the flywheel will fix the noise.
Thursday, August 5th, 2010 AT 11:22 AM