Ok, I installed my my clutch and stuff a few days ago. Everything went fine and the car drove fine with no funny noises whatsoever. Today though, I noticed a subtle whirring noise coming from the transmission that goes away when I press down on the clutch pedal: the more I push down on the clutch pedal, the softer the noise gets, until it disappears when the clutch pedal is to the floor. It makes the noise while in neutral, and even in gear it's noticeable--the noise changes with acceleration too until the engine noise drowns it out. I can hear the whirring coming from under the pedals while in the car, and even outside the car with the hood closed; it's easy to hear.
I'm thinking it's the input shaft bearing(s), so I think I need to replace them asap. I have a few questions though:
1) When changing the bearing, do I need to take off the entire bellhousing as if I am changing the clutch? Or can I just take off the transmission case itself?
2)do I need to replace both
the front and rear input shaft bearings? Or just the front
bearing? When I looked at my FSM, the front bearing looks like the part that would make the noise that's coming from my tranny: the front bearing is a ring with ball bearings in it, so I'm guessing the ball bearings are making the noise, and thus this would need to be the only part to be replaced...? Oh, and it looks like all I have to remove off the input shaft in order to get to the bearing is a c-clip
and an input gear spacer
you can check out a pic of the input shaft here to see what I'm talking about
the front bearing is #6
in the picture, and the rear bearing is the left most piece.
3)what problems can a bad input shaft bearing cause if left unchanged?
4)what causes an input shaft bearing to go bad in the first place?
Hopefully you guys can help me out here. Any answers are appreciated.