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Old 11-12-2010, 11:39 AM   #51
Subirex09
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Yeah, I only had a short shifter but I bet if I had more they would definitely try to blame the mods.

I just took the short shifter out for a while in case they noticed it while I was talking to the dealership and SoA to make sure they didn't deny anything even though the short shifter has nothing to do with it...I still had the trouble with the stock shifter.
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Old 11-27-2010, 10:17 PM   #52
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I've got an 09 wrx with about 22k on the clock and experience the same vibrations on the clutch the op described after hard acceleration. I thought that the clutch might be slipping since it was previously owned. These problems sound exactly like the one I'm experiencing however. I didn't read every single post, but has anything come of the situation?
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Old 11-30-2010, 12:57 PM   #53
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Not really, most of us think it is a tob issue, and some of the posters have had tob's replaced to no avail.

It stinks, I bought mine new and started having the issue the second winter I owned it...pretty disappointing, but I can usually stop the vibration with a few clutch pumps in neutral so I just deal with it which is not ideal.

Someone mentioned a tranny mount upgrade might have helped but he hasn't posted since and I wouldn't spend the money unless I knew for sure it would fix the problem.
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Old 12-08-2010, 11:02 AM   #54
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Have the issue, and this thread came up on a Google search. I have the same issue as the OP, and I am going to take down the gearbox soon and start with the fork. Did anyone try the follwing posted by vedor DPS?

"We've been seeing this problem lately on LGT's and late model WRX (push style clutches). The noise is even worse on LGT's that install the WRX flywheel/pressure plate combo. The noise is coming from the clutch fork vibrating against the slave cylinder pin. It can easily be misdiagnosed as a bad throw out bearing. The trick is to drill a small hole on the clutch fork and install a spring to give the clutch fork a slight pressure against the slave cylinder pin (similar to pull style clutches)."

This seems like a very real possibility and a potential fix.

Also to the guys with 2+ TOB replacments and counting, there is an after market TOB that does not move on the quill and therefore does not squeal or squeak like the manufaturer's TOB. You can cehck this link..http://www.fredbeansparts.com/index....sleve-kit.html

I wish I could sort this soon, as it is very annoying, especially the enginge vibrations in the pedal.
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Old 12-08-2010, 11:29 AM   #55
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I agree, the vibrations are the biggest issue for me.

Why do you suppose pumping the clutch 4 or 5 times stops the vibrations? Just maybe moves the fork back and forth and stops the vibrations?

The fix you are thinking about sounds great, but that isn't something I think I can do myself, I don't know a ton about gear boxes and wouldn't want to hurt something, but if it does fix the problem, please come back and let us know, I will find a way to ge it done.

Last edited by Subirex09; 12-08-2010 at 11:36 AM.
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Old 12-08-2010, 01:57 PM   #56
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^^I will definitely keep you posted, I don't know too much either, but I've asked around LGT/WRX/STI Manual Gearbox owners, even had a few drive the car to understand my rantings. I think the pumping of the pedal may be resulting in shifting the fork slightly (when you depress and let off) from the position in which it vibrates. For me I have noticed that when it is vibrating pressing it lightly sometimes eases or stops the vibrations completely, this is why I am hoping I am right (or at least on the right track) with the issue being realted to the position of the fork.

Also, I have the aftermarket TOB above, and unless the bearing itself has gone bad, then I dont think this is the cause. There are 2 pins on the TOB that lock it in place on the quill, so when the clutch is engaged, it moves with the fork.
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Old 12-08-2010, 02:03 PM   #57
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Cool, I will keep an eye open for your followup. Glad you found the thread!
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Old 12-09-2010, 04:59 PM   #58
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UPDATE - The slave Cylinder was removed, the bottom of the fork where it makes contact with the pivot ball on the gearbox was lubed with Hi Temp Lithium grease. Between the slave Cylinder pin and the top of the fork was also greased. No difference whatosever, same exact issue

So next up I will look into pulling the gear box and making checks on the TOB, Clutch, Pressure Plate and Flywheel. I will also look further into the suggestion by DPS to drill the fork and install a spring. DPS, if you're reading, please chime in....need to know the process steps, and some pics would be greatly appreciated!

Something to note - When my car is OFF, the clutch is ABOLUTELY smooth, no issues at all, when the car is STARTED then the (sometimes rough/sometimes slight) pedal feel appears. The roughness or engine vibrations comes and goes as I drive. Sometimes when I stop at a light, the pedal feels smooth, then as I drive off its back! Is this the general experience for you guys?
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Old 12-09-2010, 05:40 PM   #59
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Quote:
Originally Posted by ScoobieTT View Post
So next up I will look into pulling the gear box and making checks on the TOB, Clutch, Pressure Plate and Flywheel. I will also look further into the suggestion by DPS to drill the fork and install a spring. DPS, if you're reading, please chime in....need to know the process steps, and some pics would be greatly appreciated!
x2

Quote:
Originally Posted by ScoobieTT View Post
Something to note - When my car is OFF, the clutch is ABOLUTELY smooth, no issues at all, when the car is STARTED then the (sometimes rough/sometimes slight) pedal feel appears. The roughness or engine vibrations comes and goes as I drive. Sometimes when I stop at a light, the pedal feels smooth, then as I drive off its back! Is this the general experience for you guys?
When mine is off, my clutch also feels smooth, when I am driving I do notice at times that the pedal will feel easier to depress and then sometimes harder, and sometimes I do feel a slight vibration during shifting in city driving.

I get the rough vibration specifically when I am at a dead stop and accelerate onto a highway, like...1st gear, push to 6k rpm, quick shift to 2nd, push to 5-6K rpm again, quick shift to 3rd, push a little to get to 80 or 90 mph sometimes but usually the heavy clutch pedal vibration has begun during 3rd gear acceleration.

Occasionally it does happen without hard acceleration as well. I have noticed it happening more than once turning onto a highway ramp and accelerating moderately, even only 4k or 4.5k rpm. Sometimes I will be driving along at normal speeds and it just starts out of nowhere.

I wish that one poster got back to us on the tranny mount. I really wonder if the tranny mount stiffens the drivetrain enough to avoid whatever vibration we are feeling in the pedal.

Last edited by Subirex09; 12-09-2010 at 05:47 PM.
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Old 12-10-2010, 12:14 PM   #60
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Quote:
Originally Posted by Subirex09 View Post
When mine is off, my clutch also feels smooth, when I am driving I do notice at times that the pedal will feel easier to depress and then sometimes harder, and sometimes I do feel a slight vibration during shifting in city driving.

I get the rough vibration specifically when I am at a dead stop and accelerate onto a highway, like...1st gear, push to 6k rpm, quick shift to 2nd, push to 5-6K rpm again, quick shift to 3rd, push a little to get to 80 or 90 mph sometimes but usually the heavy clutch pedal vibration has begun during 3rd gear acceleration.

Occasionally it does happen without hard acceleration as well. I have noticed it happening more than once turning onto a highway ramp and accelerating moderately, even only 4k or 4.5k rpm. Sometimes I will be driving along at normal speeds and it just starts out of nowhere.

I wish that one poster got back to us on the tranny mount. I really wonder if the tranny mount stiffens the drivetrain enough to avoid whatever vibration we are feeling in the pedal.

We have EXACTLY the same issue, when I read this, it felt as if i wrote it .


Got this in another thread on this forum:
Quote:
Originally Posted by HndaTch627 View Post
sounds like one of the pressure plate forks is out of alignment.

jeremy
This is something else I would check when we're in there.

also this........

Quote:
Originally Posted by gandapanda View Post
Mine ended up being the tranny mount.

S
So many variables with Subaru issues in general, nothing is ever straight forward like other vehicles I've owned. I guess that's one of the prices for technology and POWER! @ 250WHP/260TQ I'm a happy camper that just wants this annoyance FIXED!

I'll keep you posted Subirex09
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Old 12-10-2010, 01:05 PM   #61
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Haha! It is a heck of an annoyance...and yes, small price to pay for all this great boxer power.

I appreciate you keeping me posted, I am gonna look for some tranny mount quotes over the weekend just to find out if that is cheap enough to just do and see if it fixes the issue, not like that would be a waste of money even if it didn't fix the issue : ).

I will look forward to your findings.

Last edited by Subirex09; 12-10-2010 at 01:11 PM.
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Old 12-10-2010, 01:50 PM   #62
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SPT tranny mount from Subaru is 89, and 1 hour labor, 94. I might do it. Did the guy who said it was his tranny mount do only the tranny mount? I have 200 bucks in chase subie rewards I was saving for my expensive 30k maintenance, but if I can eliminate my clutch woahs for 200, it would be money well spent.
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Old 12-17-2010, 03:47 PM   #63
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Quote:
Originally Posted by Subirex09 View Post
SPT tranny mount from Subaru is 89, and 1 hour labor, 94. I might do it. Did the guy who said it was his tranny mount do only the tranny mount? I have 200 bucks in chase subie rewards I was saving for my expensive 30k maintenance, but if I can eliminate my clutch woahs for 200, it would be money well spent.
Don't pay for labor, Mike. If you can change the oil and rotate tires, you can do the tranny mount yourself.

S
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Old 12-17-2010, 05:29 PM   #64
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Update - tried the spring mod today, it didn't work. The level of the clutch engagement just got a bit lower and that is where the virbrations were, just lower in the pedal. So we removed it. Blah!!!!

What next? Drop the gearbox maybe.........Sigh
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Old 12-17-2010, 05:58 PM   #65
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Oh, I just remembered I have to look @ the mount as well. Will prob do that before I drop the box.
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Old 01-08-2011, 07:39 AM   #66
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Quote:
Originally Posted by Subirex09 View Post
Haha! It is a heck of an annoyance...and yes, small price to pay for all this great boxer power.

I appreciate you keeping me posted, I am gonna look for some tranny mount quotes over the weekend just to find out if that is cheap enough to just do and see if it fixes the issue, not like that would be a waste of money even if it didn't fix the issue : ).

I will look forward to your findings.

Subirex09 Happy New Year man! Just checking in, did you change the mounts? did it work? I inspected my mounts and found them to be in good form, so I didnt change them. I still think I would have to drop the gearbox to get to the root of my problem.
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Old 01-09-2011, 01:34 PM   #67
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Quote:
Originally Posted by ScoobieTT View Post
Subirex09 Happy New Year man! Just checking in, did you change the mounts? did it work? I inspected my mounts and found them to be in good form, so I didnt change them. I still think I would have to drop the gearbox to get to the root of my problem.
Happy New Year to you as well! I JUST got the mounts done yesterday : ).

They feel great so far, but I need to take a couple of hard pulls onto the highway from a dead stop to see if the mount install cured the clutch pedal pulsation.

I did do a few heavy downshifts on the highway yesterday and got no pulsation so I am feeling good about it. I think I have gotten the pulsation before after hard downshifts as well but I want to try the pulls from a stop because that is what has caused the problem most often.

I will let you know as soon as I do the hard pulls.
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Old 01-09-2011, 04:48 PM   #68
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Damnit...the pulsation is still there : /.

The motor and tranny mounts still made a huge positive difference and the driving experience is much more enjoyable but I really was hoping it was a remedy as well.

The clutch pedal felt loose right before it happened. Pumping it tightens the pedal feel and stops the pulsation. I wasn't even doing hard pulls when it happened this time, sucks.

Last edited by Subirex09; 01-13-2011 at 08:35 AM.
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Old 01-19-2011, 01:47 AM   #69
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Quote:
Originally Posted by Subirex09
Damnit...the pulsation is still there : /.

The motor and tranny mounts still made a huge positive difference and the driving experience is much more enjoyable but I really was hoping it was a remedy as well.


The clutch pedal felt loose right before it happened. Pumping it
the pedal feel and stops the pulsation. I wasn't even doing hard pulls when it happened this time, sucks.


Are you guys talking about a high pitch squeling noise, similar to a loose belt. Also if you just barely press down on the clutch petal right before the clutch engages it goes away immediately. It's from a slight vibration where the clutch pin sits into the clutch fork and over time it will where a hole right thru the clutch fork. The vibration sound started on my car at about 10 k miles. I took it into the dealership two different times and both times they replaced the throw out bearing and it never fixed my problem. After that I just kept driving my car and I figured sooner or later it's going to get so bad that something is going to break and then I would finally find out where the damn noise came from.
If u have this sound, vibration problem I suggest taking it into the dealership and have them replace the clutch fork until the sound stops completely. Because I know that not every single Subaru makes that noise.
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Old 01-19-2011, 08:42 PM   #70
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Quote:
Originally Posted by subaru92584

Are you guys talking about a high pitch squeling noise, similar to a loose belt. Also if you just barely press down on the clutch petal right before the clutch engages it goes away immediately. It's from a slight vibration where the clutch pin sits into the clutch fork and over time it will where a hole right thru the clutch fork. The vibration sound started on my car at about 10 k miles. I took it into the dealership two different times and both times they replaced the throw out bearing and it never fixed my problem. After that I just kept driving my car and I figured sooner or later it's going to get so bad that something is going to break and then I would finally find out where the damn noise came from.
If u have this sound, vibration problem I suggest taking it into the dealership and have them replace the clutch fork until the sound stops completely. Because I know that not every single Subaru makes that noise.
Thanks for the reply.

I do also get the split second loose beltish/rub type of sound before the car is warm when I release the clutch pedal while shifting into gear which I think can be duplicated easily if I leave my car overnight and show the dealer after a cold start but I have not done that yet.

The main issue we have been discussing is a pulsation/vibration in the clutch pedal that we feel during depressing and releasing the pedal between gear changes.

It basically feels like an electric foot massager does but in the clutch pedal, but of course a little less extreme. We feel it a lot of times after a hard pull in the early gears from a dead stop.

I have found that pumping the clutch a few times while it's happening tightens the hydraulics up a bit and stops the pulsation but often only until the next hard pull. If I don't pump the clutch after it happens, the pulsation can go on for a little while.
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Old 01-25-2011, 12:01 AM   #71
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^^ So frustrating......mine feels like its getting more intense, either that or I am severly paranoid.
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Old 01-25-2011, 02:58 AM   #72
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I think had that problem with my car when i first bought it. now its just fine. dont remember what cured it though. i have rear diff bushings, subframe bushings, front shifter bushings, and a kartboy ss. anyone try one of these methods? oh i also use uncle scotty's cocktail in my tranny. smooth as glass. maybe that will help too? idk.
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Old 01-25-2011, 09:54 AM   #73
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I have the exact same sound that is demonstrated in that youtube video on my '10 WRX. Makes perfect sense if it's the clutch fork vibrating. You would think subaru would maybe just come out with some kind of a bushing or sleeve to keep pressure on it and stop the noise. I haven't told my dealer. Not really worried about it at this point.
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Old 02-06-2011, 11:12 PM   #74
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Hey guys,
I've been following this thread for a while because my clutch was doing both the chirping when pushed in all the way and occasional shuddering.
I've mentioned it to the Subaru service guys a couple times, they said they couldn't reproduce so nothing came of it.

Well, i went in for the 30k service and brought it up again. This time however i got a call back a couple hours after i dropped the car off, and they asked me if i had noticed that the clutch was a bit heavy. I told them it's been that way as far back as i remember, and that i've mentioned clutch problems in the past.

Anyway, long story short, the tech said there is a known problem with the throwout bearing which had seized in my car. This has caused the clutch to wear unevenly, down to the rivets apparently.

I ended up with a new throwout bearing and whole new clutch assembly (flywheel, pressure plate, etc.); kudos to Subaru for sorting it out under warranty.
The car shifts much more nicely now and no more notchy reverse or chirping clutch, even though it's been pretty cold for the past week or so. Hopefully that's the last of it.
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Old 02-07-2011, 08:59 AM   #75
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Well that's a success story : ), glad they took care of things.

I have my 30k service coming up in the next couple of weeks and I will be sure to mention the rubbing sound to them again when I let out the clutch, it's been happening a lot. Not really sure what a heavy clutch feels like though because I have nothing to compare it to, I may have that as well.

I smelled a little clutch burning going on over the weekend, I wasn't thrilled about that since I was shifting at 3k all day.

At this point, I am just waiting for something more obvious to happen so I can say here you go, now please fix it. Maybe they will hear the rub sound and offer up a fix for that at least.
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