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Intermittent whining noise from transmission?

Tiny
YAZIDAN
  • MEMBER
  • 2004 TOYOTA COROLLA
  • 1.8L
  • 4 CYL
  • 2WD
  • MANUAL
  • 230,000 MILES
When I push the clutch down the whining noise goes away. The day before it started to happen, I smelled clutch materiel when I tried to go uphill.

Thanks
Wednesday, October 18th, 2023 AT 5:57 AM

19 Replies

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 108,262 POSTS
Hi,

Is it loud enough for you to record and upload for me to hear? To me, your description sounds like it may be the release-bearing, but that shouldn't cause the clutch itself to overheat. See pic below.

Was the clutch slipping when you noticed the odor?

Let me know.

Joe
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Wednesday, October 18th, 2023 AT 6:00 PM
Tiny
YAZIDAN
  • MEMBER
  • 91 POSTS
Also, I forgot to tell you that the clutch is at the end of its life because it engages almost at the top end of the clutch pedal. This is the video.
There are videos on YouTube it shows us how they test the lubricity of engine oil. They use a bearing and a roller, and they put weight on the top and they run the roller. the sound that that test makes same as my car makes.
https://www.youtube.com/watch?v=nOTWlJUrdtw
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Wednesday, October 18th, 2023 AT 7:14 PM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 108,262 POSTS
Hi,

I listened to the noise. It does sound like a bearing issue. If the clutch is worn, this may be the time to replace it.

I'm not sure if you want to do it yourself or not, but I attached the directions for the removal and installation of the transmission first. After those directions, I included the directions for inspecting and replacing the clutch assembly.

Let me know if that helps or if you have questions.

Take care,

Joe

See pics below.
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Wednesday, October 18th, 2023 AT 7:54 PM
Tiny
YAZIDAN
  • MEMBER
  • 91 POSTS
Is there a way to know if it's a clutch bearing or transmission bearing without removing the transmission?
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Friday, October 20th, 2023 AT 7:42 AM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 108,262 POSTS
Hi,

There isn't a way to access it if the transmission is in the vehicle. Keep in mind, that is the only bearing in that area that will be directly affected when you depress the clutch.

Let me know

Joe
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Friday, October 20th, 2023 AT 2:44 PM
Tiny
YAZIDAN
  • MEMBER
  • 91 POSTS
I dropped the transmission today. There is no damage to the clutch plate (normal wear the clutch is almost at the rivets) and to the pressure plate. However, the throw out bearing does not spin. So how to make sure that is the throw out bearing that is making noise and not an internal bearing in the transmission aka shaft bearing, gear bearing or others.

Thank you
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Sunday, October 29th, 2023 AT 6:42 PM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 108,262 POSTS
Hi,

If the release bearing doesn't turn, I suspect that is the issue. When you depress the clutch, it doesn't change the pressure on any of the bearings in the transmission itself. Since it can't be turned, that is the most likely cause.

Do me a favor. If possible, take a couple of pics of the release bearing and upload it for me to see.

Take care,

Joe
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Sunday, October 29th, 2023 AT 9:03 PM
Tiny
YAZIDAN
  • MEMBER
  • 91 POSTS
These are the pics. If you need more let me know.
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Monday, October 30th, 2023 AT 4:21 PM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 108,262 POSTS
Hi,

It looks like it has been there for some time. If that bearing is seized and won't turn, I suspect that is the cause. I wish I could guarantee it, but not being there, is not a good idea for me to do. However, this is certainly my first suspect. (I hope you understand)

Let me know.

Joe
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Monday, October 30th, 2023 AT 7:15 PM
Tiny
YAZIDAN
  • MEMBER
  • 91 POSTS
I turned the transmission input shaft by hand, and I did not hear the noise. Also, there is no play. The clutch needs to be replaced anyway. I will replace it and let you know.
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Monday, October 30th, 2023 AT 7:29 PM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 108,262 POSTS
Hi,

I suspect that is the cause. If I can help in any way, let me know. Also, let me know if this resolves the issue. I'm interested in knowing.

Take care,

Joe
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Monday, October 30th, 2023 AT 7:52 PM
Tiny
YAZIDAN
  • MEMBER
  • 91 POSTS
Hi,

There is a gray connector that connects to the transmission, it's a 2-wire connector. I think is for the backup light. The wire got De-pined when I was trying to put the transmission. Can you give me a diagram of the connector?

Thank you for your help.
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Wednesday, November 8th, 2023 AT 8:12 PM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 108,262 POSTS
Hi,

If one wire is red with a white tracer and the other is red with a black tracer, the connector is for the backup lights.

With the key in the run position, the red/white wire is the power supply. When the vehicle is placed in reverse, the switch closes and power travels through the red/black wire to the backup lights.

I attached the schematic below for you. Let me know if this helps.

Take care,

joe

See pics below. Note: I had to cut the pic in half to make it readable. I did overlap the two so you can follow from one to the next.
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Wednesday, November 8th, 2023 AT 8:45 PM
Tiny
YAZIDAN
  • MEMBER
  • 91 POSTS
I need to picture of the connector female. I need to know those two wire where they go on the female connector.

Thank you
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Wednesday, November 8th, 2023 AT 10:59 PM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 108,262 POSTS
Hi,

If the wire colors I mentioned above are correct, take a look at pic 1. It should be the correct female connector. In pic 2, it shows what color wire goes to which pin.

Let me know if that helps.

Take care,

Joe

See pics below.
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Thursday, November 9th, 2023 AT 7:48 PM
Tiny
YAZIDAN
  • MEMBER
  • 91 POSTS
Hi,

is pic 1 shows the front or the back of the connector?
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Thursday, November 9th, 2023 AT 8:03 PM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 108,262 POSTS
Hi,

That is from the front. That is the section that connects to the male end. Orient the connector in the position shown and the wire colors will match from the rear.

Joe
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Thursday, November 9th, 2023 AT 8:58 PM
Tiny
YAZIDAN
  • MEMBER
  • 91 POSTS
Hi,

success noise is gone. However, there are some broken eggs. First of all, the exhaust manifold is broken, there is a massive exhaust leak and noise. That was my fault, I had to bend the exhaust manifold bracket connecting it to the engine. By doing that the exhaust is cracked and needs to be replaced. Second, the clutch pedal feels soft.

Thank you
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Thursday, November 23rd, 2023 AT 4:01 PM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 108,262 POSTS
Hi,

As far as the clutch pedal is concerned, make sure there is no air in the system. The exhaust is a different story. LOL

Regardless, I'm glad the noise is gone.

Take care and feel free to come back anytime in the future.

Joe
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Thursday, November 23rd, 2023 AT 9:28 PM

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