Weird whistling noise
Weird whistling noise
After installing my act clutch I installed everything back on. When I turned on the engine there was this loud whistling noise coming from the transmission. I did the install myself on my s13 red top. Could it be my throw out bearing? I think I forgot to test my throwout bearing to see if it was loose and could spin smoothly around. I installed the Throw out bearing and then just installed it back onto the transmission. I believe when I step on the clutch pedal the whistling goes away and then when I let it idle the whistling noise comes back.
mine whines but not whistles... because it's the orig KA transmission i'm not too worried but it didn't start till i took it to the track. First thing i'de do is make sure the transmission is full of oil. If not start there.
When you depress the clutch the T/O bearing is actuially moving. When the clutch is out it's not moving so i don't think it's the T/O bearing. My money is in the transmission becasue when you press the clutch while the car is sitting the input shaft on the transmission stops spinning and the whining goes away. Thats why i think it's the fluid being old/low. Just replace the fluid with synthetic and i'll bet it gets quieter.
When you depress the clutch the T/O bearing is actuially moving. When the clutch is out it's not moving so i don't think it's the T/O bearing. My money is in the transmission becasue when you press the clutch while the car is sitting the input shaft on the transmission stops spinning and the whining goes away. Thats why i think it's the fluid being old/low. Just replace the fluid with synthetic and i'll bet it gets quieter.
Update:
I tried driving it and as soon as I put it into first or reverse with my foot on the clutch pedal still the rpm drops and car dies.
I drove it around stepping on the gas every so often not to let the car die when I would coast down the street with my car still in gear. weird problem.
BTW I filled my transmission up with 2 qts of 75w-90 Mobil one gear fluid just 3 days ago so it's still new.
I tried driving it and as soon as I put it into first or reverse with my foot on the clutch pedal still the rpm drops and car dies.
I drove it around stepping on the gas every so often not to let the car die when I would coast down the street with my car still in gear. weird problem.
BTW I filled my transmission up with 2 qts of 75w-90 Mobil one gear fluid just 3 days ago so it's still new.
how about the flywheel. Is it stock or aftermarket? did they resurface it?
Did you disconnect any of the hydraulic lines in the clutch system. If so it may need to be bled.
does it go into gear easily?
The T/O bearing thing sounds like a great idea but i just don't like the fact that it makes noise when teh clutch is out. It shouldn't be moving when the clutch is out.
Did you disconnect any of the hydraulic lines in the clutch system. If so it may need to be bled.
does it go into gear easily?
The T/O bearing thing sounds like a great idea but i just don't like the fact that it makes noise when teh clutch is out. It shouldn't be moving when the clutch is out.
Flywheel is stock and couldn't be resurfaced because one of the flywheel bolts got stripped so I couldn't get it off to go get it resurfaced. I may end up driving my car to a local shop and having it redone.
All gears go in smoother than b4 I had the ACT clutch put in. I also did replace my clutch slave cylinder, but I had already bled it very good. Even if the clutch system wasn't bled good I don't think it'd make a whining/whistling noise from the transmission.
But now you're making me think it could be the flywheel. But then again just because I didn't resurface the flywheel doesn't mean that I can't drive my car at all. I've driven many cars that has had their clutch changed without their flywheel being touched all run really really good without a noise.
Only if I could have gotten the damn flywheel off and resurfaced it in the first place.
All gears go in smoother than b4 I had the ACT clutch put in. I also did replace my clutch slave cylinder, but I had already bled it very good. Even if the clutch system wasn't bled good I don't think it'd make a whining/whistling noise from the transmission.
But now you're making me think it could be the flywheel. But then again just because I didn't resurface the flywheel doesn't mean that I can't drive my car at all. I've driven many cars that has had their clutch changed without their flywheel being touched all run really really good without a noise.
Only if I could have gotten the damn flywheel off and resurfaced it in the first place.
Update:
Now my car only makes that whining noise when clutch pedal is depressed. On cold start up it'll whine too, but after the engine/transmission warms up the whine will only happen when I depress the clutch pedal. Sounds like something is scraping against each other.
I've been told that it could be that my clutch isn't fully disengaging so I'm going to have to adjust my clutch pedal and bleed the clutch system again.
Now my car only makes that whining noise when clutch pedal is depressed. On cold start up it'll whine too, but after the engine/transmission warms up the whine will only happen when I depress the clutch pedal. Sounds like something is scraping against each other.
I've been told that it could be that my clutch isn't fully disengaging so I'm going to have to adjust my clutch pedal and bleed the clutch system again.
sounds like a good theory. And resurfacing the flywheel shouldn't really cause your symptoms. It can just decrease the strength with which the clutch engages. I was asking becasue if the shop resurfaced it with the wrong step height (my flywheel has zero step height) then that could be the culprit but sence it's stock you gotta rule that out. We are running out of problems quick. And i'm sure you know this but because it makes it when the clutch is down it is VERY unliekly to be a problem with the transmission itself whitch rocks for you!
sounds like a good theory. And resurfacing the flywheel shouldn't really cause your symptoms. It can just decrease the strength with which the clutch engages. I was asking becasue if the shop resurfaced it with the wrong step height (my flywheel has zero step height) then that could be the culprit but sence it's stock you gotta rule that out. We are running out of problems quick. And i'm sure you know this but because it makes it when the clutch is down it is VERY unliekly to be a problem with the transmission itself whitch rocks for you!
It is your T.O. bearing. Iv'e experienced the same problem and knew what it was and let it go to long and it pretty much ate the helll out of my stage 4 clutch in a short matter of time. Did you make sure you installed the bearing the correct way or did you hammer it on or did you press it on the correct way. Im trying to remember which t.o. bearing it is at the nissan dealer that works with the sr transmission. You should be able to figure it out. good luck.
Not to my knowledge. How much thicker? How did you hammer it on. the best way to hammer it on is to use a big socket that just reaches right around the shaft. but no bigger as you will damage the casesing causing it to do exactly what you are telling us. Also did you pack it with a bunch of grease? Very very important. If you dented any of the caseing even if it is barly noticable those bearings basically bouncing off of that spot causing them to vibrate which creates that whining noise.
I did use a huge socket to hammer it in and I didn't pack it up with a lot of grease, but I did grease it. Maybe I needed to use a lot?
I almost have everything back out for inspection but won't get to pulling it out until my next day off which is next tuesday I believe so it'll be a while until i really know what's wrong with my drivetrain.
I almost have everything back out for inspection but won't get to pulling it out until my next day off which is next tuesday I believe so it'll be a while until i really know what's wrong with my drivetrain.
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NEED4BOOST
- Posts: 251
- Joined: Mon Jan 20, 2003 8:13 am
Ok guys I finally have my transmission off and seems like my throwout bearing has rubbed against my pressure plate and engraved into the teeth a bit. The good thing is that the TOB didn't break any of my pressure plate teeths, but the bad thing is that can I still use the pressure plate safely like that?