Clutch / throw out bearing / trans question...

[Black15GTPP]

I'm cross eyed from reading all the other posts about the manual trans problems, so forgive me for adding my own.

Current state, I'm hearing the whirring noise that sounds like a throw out bearing (but could be something else I guess?), only when not pressing clutch pedal in. When clutch pedal is pressed, noise goes away, almost like it's slowing down until it stops completely.

Same situation if I'm in 1st, 2nd, 3rd, and 4th gears... Driving along there is the same loud whirring noise, clutch pedal pressed the noise goes away. No noise in 5th or 6th gears.

Other than the noise, the car runs and drives normally (for now). If I were deaf I'd never know something was wrong.

Dealer wants to replace throw out bearing with the entire clutch assembly... Is this necessary? Can the throw out bearing be changed without an entire clutch assembly?

Other option dealer suggested was the entire trans be replaced with clutch, slave cylinder, etc. More expensive, but longer warranty on everything trans related instead of just the parts they replace...

With holidays upon us I'm not real keen on dropping their final quoted price of $5700 on a new trans and everything... If that is the route to go, is there anything against just riding it out the way it is, noise and all, until the clutch and / or trans fails, then replacing everything?

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[Cobra Jet]

Based on your profile notes, you have a 2015 GT. Most likely if it's a driver, it has some miles on it (you don't mention total miles, but assuming it's a driver and not a garage queen).

Most likely the issue is the throw out bearing based on your posting of how the noise subsided when pressing in the clutch pedal. TB failing is usually chirping, squealing, metal to metal sound, or a "whine" that when the clutch is depressed, the noise will slow down and almost or does go away - that's because it's under load to engage the clutch.

Can the TB be replaced without doing the clutch/pressure plate etc? Yes. The bigger question is, why not replace the other components when the trans is already out for such an labor intensive job?

I would recommend having the shop do the entire clutch job - it's the right thing to do, you'll have a brand new clutch system w/0-miles and most likely the job and parts warrantied for X-time.

Sure replacing just the TB will save some $$, but it's a foolish decision because next thing you know, "bam, there goes the clutch".... now you're paying 2x the labor for a job that should have been completed 1x.

Replacing the transmission should only be done if the Tech has found a compelling reason to do so (ie: can't shift smoothly without grinding, can't get shifter out of gear, constant bearing noises that don't subside with clutch depressed, he does manual inspection of trans once it's out and finds a major issue, etc).

If it's a good shop they'll do right. Again I'm guessing you have accrued miles and based on your post, I'd say it's def TB and def replace the clutch components at the minimum.

 

[Skye]

Dealer wants to replace throw out bearing with the entire clutch assembly... Is this necessary? Can the throw out bearing be changed without an entire clutch assembly?

Agree with the above. I had a like experience with my Tacoma. With the mileage and all, it didn't surprise me the TB could be failing.

While the TB can be replaced by itself, the majority of the $ is going to be spent on labor just getting to it. Further, the TB will naturally wear out; it's a sign and good measure to do the entire clutch/pressure plate job to. IF the flywheel is out of spec, they might want to surface it. Slave cylinder? While they have it all torn apart, sure (age, wear, use).

The above will set you up for the future. Unless the transmission is leaking, giving you failing tells or something of the sort, I'd simply have them good a good inspection and put it back in-place.

 

[jayman33]

Issue with this scenario is there can be a number of things wrong. When replacing a clutch you always want to replace the TOB as it’s a wearable hydraulic piece that doesn’t cost much and shouldn’t add to the clutch install job.

 

[NightmareMoon]

You can't replace the throwout bearing (aka slave cylinder) without effectively getting the clutch out anyway, so there isn't a cheaper route as far as labor is concerned.

Parts OTOH, you should be prepared for surprises when they get to the clutch, as that could be part of the problem... and I wouldn't put a high mileage clutch back in there if you have already paid to take it apart anyway.

IF that's really the cause of the noise, their plan to replace both is sound.

 

[Mad Horse]

When clutch pedal is pressed, noise goes away, almost like it's slowing down until it stops completely.

To me, this is more like an input shaft bearing.

 

[Black15GTPP]

Thanks for correcting. After posting I did more research and agree with you that it's more like an input shaft bearing failing, not a throw out bearing.

 

[Shifting_Gears]

I’m having a similar issue. Dealer failed to diagnose and gave me a BS excuse that they couldn’t replicate the noise. I have the rocks in a grinder sound and idle, clutch not depressed.

I plan on replacing the clutch, flywheel, throwout, and pilot bearing. Trans overall shifts fine but gets a little temperamental when cold and going from N to 1st at a stop.

I can’t leave my car for 3-4 weeks at a time for the dealer to diagnose (or not).

 

[Black15GTPP]

I’m having a similar issue. Dealer failed to diagnose and gave me a BS excuse that they couldn’t replicate the noise. I have the rocks in a grinder sound and idle, clutch not depressed.

I plan on replacing the clutch, flywheel, throwout, and pilot bearing. Trans overall shifts fine but gets a little temperamental when cold and going from N to 1st at a stop.

I can’t leave my car for 3-4 weeks at a time for the dealer to diagnose (or not).

Just be aware that if it's like what I'm hearing, whirring in neutral with the clutch pedal not pressed, it is very possibly the input shaft bearing. So changing all of that other stuff won't help.

No one knows for sure... It's all educated guesses unfortunately until the trans is cracked open and problem is solved.

 

[Shifting_Gears]

Just be aware that if it's like what I'm hearing, whirring in neutral with the clutch pedal not pressed, it is very possibly the input shaft bearing. So changing all of that other stuff won't help.

No one knows for sure... It's all educated guesses unfortunately until the trans is cracked open and problem is solved.

That is also true. I am concerned about that. I took it to a dealer and they failed to diagnose anything with the car. Kept it two days and put 20 miles on it. I was pissed.

The one thing that makes me think it’s throwout related is that it’s also starting to make some noise when the clutch is in as well. Like a rattling as I’m coming to a stop.

 

[Black15GTPP]

That is also true. I am concerned about that. I took it to a dealer and they failed to diagnose anything with the car. Kept it two days and put 20 miles on it. I was pissed.

The one thing that makes me think it’s throwout related is that it’s also starting to make some noise when the clutch is in as well. Like a rattling as I’m coming to a stop.

Could be both are going. Right now I'm leaning toward a full trans and clutch replacement... Not excited about a $5700 bill around the holidays.

 

[Shifting_Gears]

Could be both are going. Right now I'm leaning toward a full trans and clutch replacement... Not excited about a $5700 bill around the holidays.

That sucks badly. I may need to try a different dealer. It’s a CPO car and I have a few months left on the coverage.

 

[NGOT8R]

Thanks for correcting. After posting I did more research and agree with you that it's more like an input shaft bearing failing, not a throw out bearing.

Here’s what my input shaft bearing’s inner race looked like at 6400 miles and with just two drag strip outings. After the second trip to the track, I would get a chirping sound every single time I released the clutch on takeoff.

If yours is going bad, it’ll involve a teardown in order to get to it. If you go that far, you might as well replace other things like synchros, tob, clutch, pilot bearing, countershaft bearing and output shaft bearing.

I got myself into rebuilding my transmission after pulling it for a clutch install, as mine had begun to slip. I thought about how much time and effort was required to pull it and convinced myself that it made sense to upgrade everything that I possibly could.

 

[Black15GTPP]

Here’s what my input shaft bearing’s inner race looked like at 6400 miles and with just two drag strip outings. After the second trip to the track, I would get a chirping sound every single time I released the clutch on takeoff.

If yours is going bad, it’ll involve a teardown in order to get to it. If you go that far, you might as well replace other things like synchros, tob, clutch, pilot bearing, countershaft bearing and output shaft bearing.

I got myself into rebuilding my transmission after pulling it for a clutch install, as mine had begun to slip. I thought about how much time and effort was required to pull it and convinced myself that it made sense to upgrade everything that I possibly could.

Exactly. Thanks for posting the pic, that sucks it happened at 6k miles. Such a junk trans in these cars, I should have gone with the auto.

Anyway, just as you said, it's why the dealer is stating it might be better to just replace the clutch and trans completely and get a 3 year "partial powertrain" warranty on everything replaced.

I'm definitely not ripping the trans apart myself. I'll do quite a bit of my own repair and maintenance, but I'm not touching a trans. Nor do I have the means to get it out anyway.

 

[NGOT8R]

Exactly. Thanks for posting the pic, that sucks it happened at 6k miles. Such a junk trans in these cars, I should have gone with the auto.

Anyway, just as you said, it's why the dealer is stating it might be better to just replace the clutch and trans completely and get a 3 year "partial powertrain" warranty on everything replaced.

I'm definitely not ripping the trans apart myself. I'll do quite a bit of my own repair and maintenance, but I'm not touching a trans. Nor do I have the means to get it out anyway.

I hear you. Have the dealer replace the clutch and entire trans and you should be good for a long time, especially if you don’t race or beat on it.

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