StormB

I heard that "lucas transmission fix" additive will help with a worn out transmission and reduce bearing noise. It says on the bottle that it can be used for all auto transmissions and light duty manual transmissions that require ATF (Auto transmission fluid) gear oil. Does anyone know if I can use this in my manual transmission 03 legacy?

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One other thing I noticed was if I put my ear up to the shifter while at idle, I can hear the rattle sound travel up the shifter.

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Let's think about this,

 

The clutch disc is splined to the tranny input shaft.

 

In neutral, foot off the clutch pedal, the clutch disc is not spinning as the input shaft is free to stop spinning with the crankshaft, remember the pilot bearing supports the front of the input shaft.

 

The Pressure plate is bolted to the flywheel and always spins when the engine is running.

 

With your foot off the clutch pedal the PP is putting pressure in the clutch disc forcing it to spin the input shaft.

The TOB is not spinning at that time.

 

So when you push on the clutch pedal which forces the TOB to release the clamping pressure on the clutch disc allowing the input shaft to stop spinning.

 

I don't know if the cocktail of tranny fluid, look up "uncle scotty's cocktail"

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Sounds like it may be that your TOB is shot and continued use may damage the snout. If corrected early enough, an oversized TOB and snout repair sleeve is possible. Eventually it can damage snout beyond repair. This is just my opinion, hopefully some of the more knowledgeable members will post up for you

 

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Hi all,

I think I may have a bad input shaft bearing. It makes a rattling sound which only stops when I press the clutch in. Does anyone know if there's a way that I can stop or reduce the noise temporarily until I can get it fixed? I don't have a whole lot of knowledge in this area but would a thicker trans fluid help?

Hi all,

I'm sure you've all heard that nice muted thud sound that luxury cars like Lexus and BMW doors make when closing. They have an expensive sound to it if that makes sense. I'm sure it's all in the rubber door seals, so I'm just wondering if it's possible to achieve this kind of sound in a liberty and how I would go about that?

Is there some sort of aftermarket door seals that anyone is aware of that are better quality? Or would replacing them with new OEM seals help? The car is quite old so I assume it sounded better when the car was new, before the seals wore out.

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Both of those would be jobs for your mechanic, it sounds like. Throwout bearing is a clutch job (so the transmission is pulled back to reveal the clutch) and takes some experience and tools you might not have. An input shaft bearing seems unlikely as that doesn’t seem like a common problem with these cars. It’s also an involved job where the transmission comes out. Lots of early 2000s Corollas had input shaft bearing issues so see if you can find videos of them on YouTube making those noises.

 

I’d recommend perhaps posting the noise here. I think either way a mechanic will be looking at your car though.

 

Ok, I just re-read your post after a night of sleep. It’s not a throwout bearing if you stop hearing the noise when the clutch is pushed in. It could perhaps be an input shaft bearing. Check your oil level as well as look at any heat shields that might not be anchored down right.

 

Does the car make noise right when it’s started cold?

Yeah the noise starts up on cold starts pretty much as soon as I start the car. When I press the clutch in, even if it's in neutral, it goes away and then comes back when I release the clutch and when the engine heats up the noise gets a lot quieter.

I was also hearing another noise right after I did an oil change which sounded like a sort of grinding rattle sound which would only go for about a second after I turn the car over (not while turning it over) then it would go away. I haven't heard that noise since about a week ago but I read that right after an oil change it can do that until there's enough oil circulated however the weird thing is that my car did that on every cold start for about a week after the oil change so I'm not sure if that's related to the this current issue or if that was an oil thing but just thought I'd mention that too.

I'll see if I can get the sound on camera and upload it here. One thing I did notice today is that when I put my ear against the shifter, I can hear the sound much clearer, the sound travels up the shifter almost like a stethoscope.

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Throwout bearing could be the culprit. They’re known to be weak on our cars.

I guess I'm just trying to figure out now if this is a repair that I will be able to undertake myself. I have very new and limited experience with cars, so far I've only ever done front and rear shift bushings, shift linkage, valve cover gaskets and minor services so in your opinion would this be a mechanics job or something that somebody with my sort of experience could take on with a crash course from YouTube University? [emoji1787]

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Hi all,

I recently purchased a 2004 liberty gen 4 (known as a legacy in the USA). I'm hearing some noises that I could use some help diagnosing.

I'm hearing a rattling noise which goes away or gets quieter when the clutch pedal is pressed. Not sure if I'm hearing 2 seperate noises or if it's the same one but the noise also seems to go away when the engine warms up. I've read that it could be a bearing in the transmission. Does anyone have any more insight?