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Old 05-07-2013, 12:16 AM   #51
whitetyger23
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Great thread!! I was going crazy trying to figure out what the hell did I do!!
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Old 05-14-2013, 12:12 AM   #52
scoobykyle
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I have a 2000 2.5RS with a 5MT
I'm driving today, in 3rd gear, disengage clutch shift into 4th, then engage clutch and nothing........gave it gas while in 4th and the car did nothing. Like it was in neutral, but in 4th going 40mph.
I pulled over and every gear worked w/ and w/o clutch, shifted in and out smoothly as normal, but when you would start to engage clutch in 1st to start accelerating, it would'nt grab as if the trans had no gears, yet again you could be in any gear with clutch fully engaged and it would not stall.

After messing with it for a few minutes, the trans and or center diff or slave cylinder began to work again, and car would start to move while in gear, then I would hear a loud grinding from the trans area, possibly front or center diff.

Did not want to damage anything so i had a buddy tow it back to my house, yet the car rolled on and off the tow truck. So the diff's cant be a problem.

Any ideas on what the problem could be?
I'm new to the subaru's espically AWD systems, hense this is my daily.
Considering my other vehicle is a boosted acura. different game with fwd.

help is much appreciated

yet prior my car did have pretty good clutch chatter at times, but drove smoothly/shifted smooth no weird noises.

kinda stumped on the problem espically as i was driving quitely and smoothly down a local road.
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Old 08-15-2013, 03:41 PM   #53
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Im not really sure if this would help but my subbie has a stage one clutch and it also makes the grinding noise but i just had my valve covers done and an oil change and the noise is basically gone...just something to maybe look into
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Old 08-16-2013, 12:22 PM   #54
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My 04 did it a little back in the day, My 05 did it a little, and my 02 does it pretty bad. I just prey that some day it will nuke on me and I can get a nice set of gears.
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Old 08-16-2013, 12:39 PM   #55
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No way! So I wasn't the only one with these kinds of sounds! I always thought that one of my belts was loose and was flapping around when not on throttle, but after reading everyone's posts, I am sure it has something to do with a driveline... Now to add to the to-do list after I find a new tranny
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Old 08-30-2014, 12:24 PM   #56
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I have the same issue with my 02 wrx I just rebuilt the engine and resurfaced the fly wheel new clutch ect. This thread is rather old but I'm eager to find a solution!! If you could get back to me I would really appreciate it.
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Old 08-30-2014, 12:41 PM   #57
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Whoops didn't read through the threads. But ya pretty much sure it's the fly wheel it's the only thing that has been changed on my car. I replaced the clutch with an OEM clutch resurfaced the stock flywheel and replaced the starter ring. I'm not sure how much material was removed from the flywheel but this sounds like the reoccurring culprit.
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Old 08-30-2014, 10:30 PM   #58
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By the way, I had this and a guy at my local shop was able to figure out what it was. 2006 sti in my case, 80k mi at the time.

Apparently the exhaust in some of our cars is located very close to either the transmission or rear dif (I forget which one). If it gets banged around, or if an aftermarket exhaust is installed and has less than perfect fitment, when the car heats up, the exhaust can come into contact with the transmission/diff. The "grinding" is the noise of the transmission/diff vibrating which sort of rattles the exhaust when the parts touch. It happens with the foot off the gas because the exhaust and trans/diff are apparently a bit closer when you're not on the gas but rather just coasting around in gear.
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Old 09-30-2014, 12:34 AM   #59
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I have learned to live with it. It's been about 3+ years now.

I think it's related to OEM aftermarket clutch.
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Old 09-30-2014, 06:20 AM   #60
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i had driveline noise issues on my 02 wrx and found that tire pressures affected it....

i found that 3-4psi more pressure in the front tires helped noise---and handling...depending on the tire

my 06 wrx isnt any issue...and 'likes' tire pressures to be within less than 2psi difference
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Old 09-30-2014, 06:53 AM   #61
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it's a bearing in the transfer case. i just had mine fixed. gearbox doesn't even need to come out.
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Old 02-22-2015, 10:53 PM   #62
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Bumping old thread again.

For those who have had this noise did new flywheel eliminate the issue? I suspect it could be either OEM replacement clutch or lighter flywheel.
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Old 02-23-2015, 01:50 AM   #63
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Quote:
Originally Posted by txl146 View Post
Bumping old thread again.

For those who have had this noise did new flywheel eliminate the issue? I suspect it could be either OEM replacement clutch or lighter flywheel.
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Originally Posted by vicious_fishes View Post
it's a bearing in the transfer case. i just had mine fixed. gearbox doesn't even need to come out.
trust me. others have reported back exactly the same.
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Old 02-23-2015, 01:22 PM   #64
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Quote:
Originally Posted by txl146 View Post
Bumping old thread again.

For those who have had this noise did new flywheel eliminate the issue? I suspect it could be either OEM replacement clutch or lighter flywheel.
For me just putting in a Oem flywheel fixed the issue. I did have it cut though so there was very minor noise but not enough to drive you crazy.

Quote:
Originally Posted by vicious_fishes View Post
trust me. others have reported back exactly the same.
A bad bearing in the back portion of the trans is not the noise being covered in this thread.
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Old 02-23-2015, 08:51 PM   #65
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Quote:
Originally Posted by Supraru View Post
For me just putting in a Oem flywheel fixed the issue. I did have it cut though so there was very minor noise but not enough to drive you crazy.



A bad bearing in the back portion of the trans is not the noise being covered in this thread.
terrible when you're "engine braking/foot off the gas" but goes away entirely when accelerating? gets worse the faster you go? just like THIS thread: http://forums.nasioc.com/forums/show....php?t=2694515 here?

"
Quote:
Originally Posted by vicious_fishes View Post
it's a bearing in the transfer gears. had the same thing with my 5 speed. just pop the rear housing off the box and it's all good, no need to even pull the gearbox!
Quote:
Originally Posted by jdmSpecC760 View Post
So little update today my buddy took the back center diff housing off we found out it's the drive gear bearing it sounded pretty nasty I have to order 3 bearings for the center diff so we put everything back together and threw some new Subaru gear oil in and will be back at in next week or so I'll let you guys know if these bearings takes care of it.
"

if it gets faster with speed and is acceleration/deceleration dependent, it's the transfer gears. goes away with the clutch depressed, transfer gears. think about how a gearbox works.
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Old 02-23-2015, 08:57 PM   #66
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Quote:
Originally Posted by vicious_fishes View Post
trust me. others have reported back exactly the same.
Tell us how you went about replacing it without pulling tranny?
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Old 02-23-2015, 09:50 PM   #67
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Quote:
Originally Posted by txl146 View Post
Tell us how you went about replacing it without pulling tranny?
lift up on hoist, remove midpipe/driveshaft, undo bolts on rear housing (where the driveshaft slots into)

that's not the bad part though. the bad part is that it's a special bearing with like four holes machined around a square collar or something and you can only order it from subaru for $fortune, no generic bearing or whatever can replace it.
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Old 02-24-2015, 11:58 AM   #68
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Quote:
Originally Posted by vicious_fishes View Post
terrible when you're "engine braking/foot off the gas" but goes away entirely when accelerating? gets worse the faster you go? just like THIS thread: http://forums.nasioc.com/forums/show....php?t=2694515 here?

"

"

if it gets faster with speed and is acceleration/deceleration dependent, it's the transfer gears. goes away with the clutch depressed, transfer gears. think about how a gearbox works.
I don't really have to think about anything. I know how a trans works. I've also rebuilt plenty and at least double that for replacing bearings in the back of the trans. This noise is not the same as a bad bearing. Sure maybe yours was a bad bearing but again it's not the same noise.

I personally on my Rsti went through several different clutches and flywheels Over the years. I also went through a couple 5 speeds and one was completely rebuilt with lgt gears and I replaced all the bearings while I was in there. It still made the noise. Not once did the decel noise being talked about in here went away till I put back in an Oem flywheel. It is not the same noise that is made from a bad bearing.
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Old 02-24-2015, 12:15 PM   #69
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yep, a decel noise has been known to happen with lighter flywheels. but the OP described exactly the problem i've had, someone else has had, and it wasn't the flywheel for either of us.
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Old 02-24-2015, 12:39 PM   #70
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Quote:
Originally Posted by vicious_fishes View Post
yep, a decel noise has been known to happen with lighter flywheels. but the OP described exactly the problem i've had, someone else has had, and it wasn't the flywheel for either of us.
You're talking about the "scratching" noise that got worse for him once he got a clutch job and the shop cut the flywheel? It's a pretty open and shut case. Like I've said I've diagnose far to many transmission noises in my time. I'm a Subaru tech.
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Old 02-24-2015, 09:02 PM   #71
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Ok - I am convinced now. Will replace the flywheel next time I replace the clutch.
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Old 02-24-2015, 10:32 PM   #72
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Quote:
Originally Posted by Supraru View Post
You're talking about the "scratching" noise that got worse for him once he got a clutch job and the shop cut the flywheel? It's a pretty open and shut case. Like I've said I've diagnose far to many transmission noises in my time. I'm a Subaru tech.
ah. well if it was after a clutch job then process of elimination says it was clearly that. you hadn't mentioned that/it wasn't in the OP so...

godspeed OP man!
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Old 02-24-2015, 10:43 PM   #73
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Well when people are trying to help someone in a thread especially in such a short 3 page thread some people should read more then one post before blurting out what they think it is and just say that's what fixed thier car. Clearly you didn't take in all the info given by the op after people asked diagnostic questions.
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Old 02-24-2015, 11:29 PM   #74
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actually if you read the thread there is a whole stack of potential causes/fixes posted. i actually had a lightweight flywheel in mine and it WASN'T the flywheel.

i get it. you're a subaru tech. you are all knowing. your penis is huge. move on.
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Old 02-25-2015, 06:39 AM   #75
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Quote:
Originally Posted by vicious_fishes View Post
actually if you read the thread there is a whole stack of potential causes/fixes posted. i actually had a lightweight flywheel in mine and it WASN'T the flywheel.

i get it. you're a subaru tech. you are all knowing. your penis is huge. move on.
Again after the first page he starts to pinpoint and even post a video. Same noises I had in my car. Interesting story my last set up in my car before I sold it I had yet another street light flywheel and it didn't make any more noise after the lrevious two did. The same exact ones from act. But either way you can make excuses to why you didn't read more then one post.

Some people here read something and post up their experience of what happened to them just for attention. Some people post to help people fix an actual problem. Take a guess at which one you are. The guy has been dealing with this noise for 4-5 years now.
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