Throw out bearing?
I have an 03 Duratec 2.3 with the 5 speed. Today I noticed the transmission sounds like it has rocks in it. If the truck is in neutral with the clutch out or in it won't make a sound. Push the clutch in by itself and no rattle but as soon as you put it in gear the rattle starts again. When taking off from a stop you can hear it get louder then over 2500 it goes away. It does it in any gear. Could it be a throwout bearing or input shaft bearing? The truck only as 67,000 miles on it. What are my options with fixing / diagnosing it? Thanks in advance for any help.