Quick question, after finally solving the mystery of the disappearing dot 3 from my clutch line... I noticed that my car has a dreaded rattling noise at first I was like oh noes my timing chain... But I noticed that the noise is coming from the tranny...

My question: I assume it's the input shaft bearing? It goes away when I clutch in (pedal to the floor).

The only part I'm a bit confused on is the threads here state that it's a whirring noise while I know I clearly have a rattling noise. I haven't driven the car around yet to find out if it happens while I'm in gear or not (It shouldn't if it is the Input shaft bearing, right?)

Video: The noise only goes away when I'm on the clutch as stated above.

 

iknow alot of people will say input shaft. i had the same exact noise i need to put a new clutch in so while i had the transmisson off i checked the input shaft it was good. throw out bearing was the cause off the noise my clutch kit came with a new one now the noise is gone.

 

It's really weird, cause from looking at JtzMax's photos and stuff that part shouldn't be making a rattling noise... Unless something has really gone wrong. The noise isn't constant either, which makes me believe that it's something loose.

 

the throw out bearing looks like one piece but it two one side spins when it hits the pressure plate when it really wore out it spins real freely and make that noise hence when u push in the clutch the noise goes away when u let it out that bearin is still spinnin and makes that noise i could be ur input shaft bearing but i would def check that bearing when u pull the transmission spin the bearing with ur finger u will know if thats ur issue

 

if u can get video clips on ur ceel phone pm ur number ill send a clip of my old throw out bearin

 

sounds like the throw out bearing to me. i had the same problem on my car and when i replaced the clutch with the bearing it went away.

 

PM Sent, and I'm making a video of it now.

I know it sounds like a TOB, but when I searched I came across multiple times people saying "TOBs would only make noise when you're on the clutch." If I'm wrong then it's just a TOB and I'll replace the clutch.

[edit]

The video (I put it in the OP too)

 

i sent the message to ya hope it helps

 

i am also having a similar issue. its a low whirring noise, when the clutch is in, it goes away, but when engaged on a gear or even in neutral with the clutch disengaged, its constantly whirring. my noise goes with the revs of the engine when engaged in a gear and driving. i was told it was worn input shaft bearings and that when the clutch goes down, it is no longer spinning the input shaft, thus no noise. i've also been told that it is the TOB. idk what to believe anymore

 

I've had the same issue as you since I bought my car. Clutch out - transmission makes a whirring sound (loud as hell in the cold!), clutch in - no sound.

It progressively got louder and eventually the transmission started leaking. When I checked my axles...holy crap, my driver's side axle had at least 2" of play in it.

I purchased a bearing kit and had the transmission rebuilt. Now it's quiet and perfect.

I did a lot of reading on this forum and a lot of other forums and most say that the TOB makes noise when the clutch is IN, not when it's out. Also, in my experience, the TOB makes more of a chirping sound than a whirring sound, like the IPS bearing does.

BTW, I drove 20k+ miles with that awful bearing sound. The car shifted perfectly but once it started leaking, I started to get a little scared. I am so glad I finally got it taken care of.

 

to tell you guys the truth the only way ur going to find out is drop the trans i dreaded it myself but my clutch was cooked so it had to be done and once i got the nerve to do it i did the whole thing in bout 4 hours in my garage i will say having a extra hand would have been nice

 

mine was TOB mine made the same noise as the op does but it could be input shaft i think the only way to find out is drop the tranny once u do that there will be play in the input shaft or if u spin ur TOB u will hear the noise but i think u wont know till u drop the tranny

 

Ok, how about this one...

What would cause a TOB to go out?

For months (Since September or November) I've been having hydraulic problems with my clutch's hydraulic system, Since the beginning of this year I have been replacing parts associated with it. Today I got a slave cylinder rebuild kit and did that, finished bleeding the clutch and started the car to let it warm up and then I noticed that noise. What I'm trying to say is that can the months of improper shifting would lead to any extra wear on certain parts which could lead to this noise?

But Luke95 may be right, I have to drop the tranny, that sounds like the cheapest route to go, I don't want to buy unneeded parts (my clutch is fine)

 

I found an old sound clip of what mine sounded like.

I clutch out at around 0:09. Listen:

 

heres my deal i got the car from a close friend and i was lossing fluid every week or so so i knew i had a leak didnt know where then the clutch started to slip and then that noise i think the fliud was gettin past that rubber dust boot on the fork and caused the bearin to fail it could have been just been time for it to go i ended up buyin new clutch line slave cylinder and clutch kit total cost was 210 or so clutch kit came with pilot bearing throw out bearin clutch and pressure plate and alinment tool i know u can buy the throw out bearing sepreate a any auto parts store

 

Yes! Mine makes that noise too, but I have a random rattle with it also that can be heard from pretty far away, which is why I started this thread...

 

Same. I had a rattle that couldn't be heard in the sound clip. Sounded like little pebbles hitting around in there.

I was always taught that keeping the clutch in for too long would prematurely wear out the TOB.

 

I'll have to agree with you, time to sell moar stuff and drop my tranny... ugh -_-;;

I'll take pics n stuff and update this thread once the tranny is off.

PS to embed vids all you have to do is [youtube]xx1234@the end of the url[/youtube ]

 

If the noise goes away when you press the clutch pedal, it's the input shaft bearing, regardless of what you call the noise.

The throw out bearing cannot make a noise with the same symptoms because the throwout bearing doesn't do anything when the clutch pedal is not pressed in. It just sits there, no spinning or anything. Something that isn't moving can't make noise.

 

If the clip(s) that hold TOB are broke, it will rattle when not depressed due to engine vibration. When depressed, it is helt tight. The point is probable mute though; either way you have to remove the Trans and you can then determine what the issue is. Good Luck.

 

that didn't happen to me and because of this assumption I thought it was the TO bearing for the longest time. With my pedal up, clutch not pressed in. The sound is horrible and there. IT is indeed the input shaft as I just replaced the clutch and TO bearing. I have had 3 master tranni techs tell me this...The sound goes away completely when I push the clutch in. It honestly doesn't make a lot of sense why these go so much Thanks nissan. lol

 

Neal said in another post that they are improperly shimmed from Nissan... Which makes me wonder if the FSM has the proper shimming specs... My 5spd's days are limited and I'm being forced to do the 6spd swap sooner and sooner....