Om1kron

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gsxr141

i just installed a new clutch set and light flywheel. everything seemed ok for about 20 miles. now i have a noise on decel. in any of the first four gears, theres a loud noise as the tach gets down around 2500rpm. it goes away below 2k rpms, and also when you push the clutch in.
it sounds to me like it's in the trans. i was having problems with 2nd gear grinding before, so i think i'll change the trans to a spare i have.

gsxr141

well, i just swapped transmissions and the noise is worse. now it comes and goes while revving up the engine. it doesn't matter if it's in gear or not. strangely, it went away a few times when i put the car in 4th gear sitting still.
the noise seems to be rotational, like maybe the clutch, pressure plate or even throwout bearing.
if anyone has any advice, please post. i don't want to keep yanking this thing out on the ground.

boozy

I ahve a prob with my tranny/shaft, when i drive my car ( s14 sr20det) my car makes rumbling noises from the tranny/shaft when i drive in like 2.3.4 and then let go of the gas( like i take the pressure of the tranny) its sound like a rumbling noise, what could that be??

here is a vid of it:

YouTube - S14 sr20det tranny noise

gsxr141

that's almost what mine sounds like. it looks like yours starts at 2500 rpm also. does it go away at 2000 rpm? i've tried 2 trannys, 2 throw out bearings, and 2 driveshafts. i guess i'll have to try another clutch and flywheel next, even though the one in there has only 60 miles on it.

chetacheese

i dont know if contributions and technical issues with our clutch systems is still relevant with this post. it doesnt look current. but i have an issue i wanted to figure out. im sure my clutch throwout bearing is going out but just want to confirm.

sometimes, once a week or so, i would be at a red light and as soon as it turns green, i let go the clutch in first gear, right when the clutch engages, it seems something is yanking on the clutch. a screeching noise occurs. kind of a combination of grinding, whining, screeching, and screaming together. its pretty loud and embarrasing when pedestrians are trying to cross the street while im waiting for them.

also, since this started happening. approximatly about 2 out of every 5 starts, it feels like the starter is weak and hesitates to start. but it starts everytime.

any help is appreciated and pm of solution is encouraged. thanks.

1Fast80sx

^sounds like maybe a loose belt?

project-D180

I HAD THAT HAPPEN to me when i 1st did my 5 speed swap.i replaced the pilot bushin and it went away..before i changed it i was hearing all kind of noises when i decel n accel

chetacheese

i kinda figured it was the pilot bushing. but with that bushing, how far is it supposed to go in? because i pushed it in as far as it can go, is the pilot bushing supposed to be flush with the hole? maybe pictures can help, i dont have any.

doubt its a loose belt. it wont make this much noise. and every symptom relates to the clutch.

mack97

i had what sounds like the same issue im my ka tranny and it was the countershaft bearing in the intermediate plate. All bearings were in great condition except for that countershaft bearing. replacing this thing involved completely disassembling the transmission(gears and all) to remove the counter shaft. The gentleman that helped me said this was a common issue on the older nissans because of the location of the bearing(just below the reverse gear and near first and second). He said people would grind those gears more often and the metal shavings would fall in the bearings area destroying the bearing.

He could have made up that explanation or maybe not, all i know is that replacing that bearing stopped my noise and saved me from multiple tranny drops

270R

I have an rattling issue : in any gear, on decel my trans rattles like a mofo. Also Id like to add that I have the Nismo pivot installed on my s14 sr20 if it matters.

another question what would the trans do if it had a bad or no pilot bearing? which is what im suspecting.

270R

bump.......

confuzed240

RacePar1 you are the man

Mods this thread needs to be a sticky. Theres 10 posts a week about trans noise.

live2c2morrow

My hear like what sounds like a grumbling sounds when pressing on the clutch. Happens when RPMS are above 1k and does not matter if I am in gear or not. I would like to find out what it is so I could have it replaced or fixed. Thanks in advance.

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obsolete

check your mounts?

270R

yeah their fine. its coming form the within the bellhousing. i feel like something is loose in there. also is I have the nismo pivot do I need the nismo slave?

270R

Im just gonna replace all the hardware. its old any ways..


Can I get KA tranny parts to fit on my sr tranny?

racepar1

That sounds like the throwout bearing, pretty "textbook" symptom...

The only difference between the KA and SR tranny's are the bellhousings. Everything else is the same. Honestly though your noise sounds more like it could be the trans itself. Also it could be in the clutch, maybe a dmamged hub or broken springs. I would pull the trans off and inspect the clutch and driveshaft and go from there. If the driveshaft and clutch both seem to be OK your problem is likely the trans.

locoluna825

Heres one for you all. I just swapped out my old tranny for a supposedly known good one. The previous tranny made no niose at all. It just wouldnt go into reverse sometimes and would pop out of second gear.

This new tranny makes noise (a low and a high pitch whine almost sounds like a grinding.) When excelerating in first gear. And makes another noise while Deaccelerating from high rpms like a noisy bearing., also makes the the first noise for a brief second while shifting from 1st to 2nd and some times to from 2nd to 3rd.

The previous s13 the transmission was in never made any noise. The only difference from my car and the previous car is I am using a J30 Diff. I am temptated to just swap out the rear end back to the stock open diff. But I dont really want to waste the gear oil if it really is the tranny. im gonna put a few more miles on it before i start swapping things out again.

Ramonesfreak2010

Didn't want to make another thread but heres what I'm dealing with:

1. Clutch pedal feels dead. Its not stiff at all compared to my friends 240's.
2. When in neutral/at a light, the tranny makes some noise unless the clutch pedal is pressed down.
3. At high RPM's (Atleast in 1st and 2nd gear), it makes a nasty rattling sound.
4. With the clutch pressed down, its hard to put it in gear.

Looks like I got a can of worms.

smoked240

I think the problem I am having is in my differential. I know it has to be either one of two things or both. Pinion bearing is going, or backlash is to much. A month after I got the car I started to hear a howling/drone from the back passenger side, I thought maybe a wheel bearing. but that was tight and didn't bind, So I replaced my carrier bearings, still there. And now that I installed Solid bushings it has multiplyed the sound by 50. It's terrible. I am getting that other differential, but this one is going to be a track differential since I will have my spool in it. any ideas?

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EJ8 944

I hate making new threads when there are already 300+ trans noise issues out there. I need some help though, I am having some problem unlike anything I have read (I've searched and read through close to 50 threads now). I'm tempted to make a new thread only because I have't come across anything like I'm experiencing. Info below:

Car:
95 S14, stock engine/trans wise, minus the cusco 2-way LSD.

Symptoms:
My car will make a LOUD humming sound on deceleration, and at idle (only if ithe idle is higher then 800 rpm). It's quiet when the engine temp is cold, and gradually gets louder as it reaches operating temp, its the loudest once it's fully warmed up. The clutch being engaged or disengaged has zero effect on the noise. The only way it stops making noise, is if my idle is at or below 800 rpm, or the engine is receiving any sort of load (accelerating or cruising).

It's extremely annoying, I can clearly hear it in my car, even over the radio, and outside the car its obviously more audible. Does anyone have any idea what this might be? Or where I can start checking?

I can best describe the sound of the noise as a weak, and almost dead car horn being honked continuously. I've checked all placed in my engine bay, the noise definately sounds like its coming from around the firewall.

240sx-pat

Hey, can you identify this whining noise for me please I'm trying to figure if its from my ps pump or tranny. It sounds like its from p/s pump but i cant be to sure


YouTube - ‪Idling/ stalling issue‬‏

I fixed the idling issue in the video already. Now I'm trying to get rid of the whinning noise

jsu1012

bump for an old thread .




im having the same issues this guy has/had. any ideas, or suggestions?

racepar1

The issue described in the post you quoted sounds like a bad pilot bushing.

cotbu

light sort of hollow clack at low speed. slightly higher speed more of a ticking sound. 50mph horn sound.

I've done all the clutch in out, coasting test, the sound is not there in neutral. So it's rotational.

low speed clack clack clackity clack.
35mph tick tick tickity tick.
50mph hooooooooooooooooonk hoooooooooooonk hoooooooooooooooooonk
I'm thinking drive shaft!
I'm gonna pull the drive shaft, and examine, then run the transmission through some gears, at varying speeds.

Broken Drive shaft

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LadyS13

From the dead. This is my last effort before i scrap this Fu***** tranny. Whining noise in neutral, foot off the clutch. 1st - 3rd on accel and 5th. Ive replace every bearing in this trans including input and pocket input several times. Using mtl and redline heavy duty shockproof. No issues with any shifting. Looking for any help or suggestions. Also replaced pilot with bushing and bearing.

smoked240

Thread from the dead! Run it till the dirty bitch blows bud!

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racepar1

Due to the lack of noise in 4th, I am thinking countershaft bearings. 4th is 1:1 so the input and output shafts are essentially locked together in that gear. I was thinking maybe a gear wear issue, but that might not explain the noise in neutral. Does the noise in neutral go away when you put the trans in gear?

LadyS13

Ive replaced the counter shaft bearing and pocket bearing 3 times now thinking I had a bad bearing, or had them installed weird. Noise goes away anytime the clutch is pressed. My only other thought is that the counter shaft bearing is spinning inside the transmission bell housing.