i have EG hatch with a z6. i just put in a new stock clutch & a "rebuilt" transmission (manual). i think the transmission has had some work because its stamped A000 but has ex gears & its VERY clean on the outside. my problem is that there is a whinning noise from the transmission side while going down the road but it goes away if i let off the gas & it doen't do it at itle. the other problem is that when i accelerate hard the tach will jump some , not terribly , but its definatly noticeable. the tach never did this before.

so anybody got an idea of whats going on here?

-thanks

 

bump. could the tach problem be because im using a cx speed sensor rather then a ex ?

 

The tach gets its signal from the igniter unit inside the distributor. Have it tested.

Does the transmission noise go away when the clutch pedal is pushed to the floor?

 

Noise with clutch pressed in = Throw out Bearing, most likely.

Noise with Clutch let out = Input shaft Bearing, most likely.

 

the dizzy is pretty new so i would think its fine. as far as the noise it does not do it idle . only when im giving it gas but goes away if i let off

 

Make sure the blue tach wire attached to the igniter unit is clean, tight, and undamaged.

 

^^^ okay thanks i will check that tommorow!

 

Does the clutch seem to be slipping?

 

i dont think so? this is only my second car and dont know the signs of a clutch slipping.

 

When attempting to accelerate, do the engine rpms rise high without the car moving as fast as you'd expect?

 

^Revs up at random spots while accelerating and seems like it doesn't have the power that it should at certain rpms...

 

the rpms in relation to the speed seem normal ( atleast i think lol)

 

Was the flywheel resurfaced or replaced when the new clutch was installed?

 

^So, while you're accelerating the rpms just don't all of a sudden rev while you're foot never left the gas or touched the clutch?

This would be the signs of a very bad slipping clutch though.

 

no it wasnt. which probably wasnt smart of me but im only 17 and dont think sometimes haha

 

no the tach only jumps when i accelerate hard. and seems only past 4k ( so when its in vtec?)

 

That is called slipping...

 

great... why would it slip if its a new clutch?

 

Did you replace the whole kit or just the clutch plate?

 

everything. & i had someone thats been working on cars forever check it out.

 

Hm. We might need to wait for Ron, I'm at a wall.

 

can you tell me if the clutch is adjustable & if the clutch slave cylinder is not bled right could this cause this problem? also how tight should the clutch pedel feel with a oe style cluch?

 

Clutch engagements can be adjusted, so I really wouldn't know. I'm at a loss at this point, I wouldn't want to start guessing things.

 

As you are releasing the clutch pedal, how high does it rise before the clutch is fully engaged?

I don't think a clutch hydraulic system problem would cause the whining you describe.

If the clutch is truly slipping, then the flywheel that was not resurfaced may be the problem.

Are you sure the noise is not coming from one of the drive belts?

 

what is the break in period (miles) that should be driven on a rebuilt tranny before actually really "getting on it?