Cvzrx8

Guys my transmission is making a rattling noise in a way it sounds like one of the newer quiet diesels, it makes the noise when in idle when I drive n also it won't let me go into reverse but when I push my clutch all the way in it stops the noise. Pls guys any suggestions? :'(( I have too many issues going on it's frustrating

Jon316G

iTrader: (1)

It could be that you're hearing gear rollover which is normal (search gear rollover).
If its not gear rollover, then it might be a bad pilot bearing.
Other possibilities can be lack of lubrication on certain points like where the release fork attaches to the release bearing or the pivot ball.
Difficult to say for sure without hearing the noise.

Cvzrx8

If it's gear rollover how can it be fixed? Would in anyway would the tranny be ruined?

Jon316G

iTrader: (1)

You didn't search gear rollover like I suggested did you?
If you did, you would have read that it is a normal sound for the RX8 tranny and its nothing to worry about.

Cvzrx8

It isn't the usual sound it's way louder n sounds like a lot of constant clicking

Jon316G

iTrader: (1)

If its not the usual sound, then it could be a couple things (again, difficult to diagnose over the internet).

While you slowly engage the clutch, does the chirping sound intensify as the pedal is lifted?
If it does, probably a bad pilot bearing.

If its chirping while idling and its in neutral, then its probably lack of lubrication on the release fork/pivot ball contact point.

Cvzrx8

I just checked n no it sounds when it's past the engagement point, n if I accelerate the sound increases well goes with the rpm

Jon316G

iTrader: (1)

Does the sound also occur if you let it sit in neutral (clutch engaged) <--- sorry... edited

Cvzrx8

No it does not whenever the clutch is engauged no sound but without it engauged it sounds

Jon316G

iTrader: (1)

This is opposite with what you said originally.
Now you're saying with the clutch engaged (clutch pedal up) there is no sound, but without it engaged (clutch pedal in) it does sound.

Please clarify which one of your statements is correct with what you're experiencing.

Cvzrx8

Sorry I meant when the clutch pedal is pushed in all the way I'm sorry :/
so when clutch is pushed in no sound clutch pedal out sounds

Jon316G

iTrader: (1)

OK... if it were the other way, it would indicate a bad release (throw-out) bearing.
Like I mentioned... clutch/tranny noises are difficult to diagnose over the internet and its important to get as much facts as possible (hence all the questions).

Do this... Take the car out and get to a good speed.
Put the tranny in neutral, engage the clutch, and rev the engine (take a good 3sec to redline).
Listen to the sound.
Then put the car in gear and accelerate.
Does the noise sound the same?

Also, get up to a good speed, press in the clutch pedal, and downshift.
Start to release the clutch pedal and listen to the sound.
Does it sound worse?
I'm basically trying to spin the input shaft at a different rate than the flywheel to see if its the pilot bearing...
Getting a headache trying to visualize a way to test the pilot bearing (obviously, without dropping the tranny).

Cvzrx8

Actually driving it's quiet now but once I stop it returns I did what you asked n it got quieter Going up a hill just now it got a bit louder n once I went down quiet hard accerlation makes noise actually sounds like a turbo spooling weird...

Cvzrx8

6th gear crusing with a very light foot nothing but I get to a hill where I gotta push more gas n it sounds at a high pitch

Cvzrx8

I also feel as 2nd gear doesn't really go in all the way but it's still going

Jon316G

iTrader: (1)

I'm really leaning towards it being a lack of lubrication on the release fork/pivot ball contact point.
If its quiet during driving and just returns once stopped, the tranny tends to vibrate a lot idling (just watch the shifter) and that metal-to-metal contact could be what you're hearing.
Is it possible to get a video clip of this just to be sure?

Cvzrx8

Neutral makes alot of noise

Cvzrx8

Oh n when I'm in a gear on gas it's slight but when I let off the gas it's loud!!! It sounds like somethings getting shredded n do you have an email I could send it to?

Jon316G

iTrader: (1)

ummm... you can post it on YouTube and post the link here.

Cvzrx8

I'm publishing this off my phone, sorry about the lack of my holding it still, the link is
http://www.youtube.com/watch?v=1dAgCBnbs2o
it may take a couple mins to watch

Jon316G

iTrader: (1)

Damn... that thing sounded like **** towards the end of that clip!

Let me ask you this... in the clip you decelerated in gear (letting of the gas).
If you run the car again (the same way), leave it in gear, and instead of letting off the gas to decelerate you press in the clutch and slow down (coasting), will it still make that noise while decelerating?

Cvzrx8

At the end I let off the gas I know it's bad :/, n if I press in the clutch it goes quiet no matter the situation

Jon316G

iTrader: (1)

Man... I'm not sure... could be either the pilot or input shaft bearing...
Let wait and see if we can find some other input/ideas from other members here... maybe someone will recognize that particular sound.
I wouldn't feel comfortable driving that around.

If you are comfortable with dropping the tranny yourself, you can spin the input shaft (tranny in neutral) and feel for grinding/resistance.
Then inspect the pilot bearing.

MTspeeds1

oh dear god that sounded awful!

Cvzrx8

I took another listen n it makes a quieter sound when coasting