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Old 11-26-2001, 03:36 PM   #76
superspd8
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Quote:
Originally posted by TypeC


that IS the problem. It is the drivetrain. It only makes the noise when the transmission is engaged during deacceration. It sounds like grinding/rubbing gears. Mine has been like that from day one. I know something is going to give at one point. I don't deaccelerate with the motor to hopefully lengthen the time before it goes out.

-C
Bitor1:

The noise that I am describing occurred witht he car in neutral stopped. If the tranmission shafts were rotating (clutch engaged), it made the noise. If I depressed the clutch, it made no noise.

The noise on the Subaru is not the same. I thought it was mechanical. I read where one dealer had told the forum member to drop the rear pressure to 29 and raise the front to 37 (or something like that). I just raised mine to 36/33. The noise is virtually gone.

I am going to put Toyo Proxes T1s on my car in the next week. I will let everyone know if that makes a difference.

Jan
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Old 11-26-2001, 05:08 PM   #77
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The noise I was describing seems to point toward a throw out bearing going bad (@8500miles?????) anyways the noise is there when I depress the pedal to it's extreme position (pedal all the way to the floor) And the grinding accelarates with the engine speed. Release the pedal and it's gone. I do not have this noise when the tranny is engaged in neutral so I don't think it's a gearbox bearing.

Not to confuse anyone but the other noise I have is what everyone else has been descibing : off throttle deceleration rattle. And this is what this post is trying to address. And just to point out, I have the kartboy hardened shifter bushings installed and this problem was there before I installed them so I don't think they make a difference. However I have read posts that indicate redesigned clutch parts may be the correct fix. SUBARU if your listening we all love our cars but what's the deal with the tranny problems?

Thanks for everyone's input....WE DESERVE A FIX FROM SOA


P.S. does anyone think it's rather peculiar that Subaru service techs have no idea of what we are taking about when we describe our problems? Unfortunately I think they know how to fix it but have there hands tied
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Old 11-26-2001, 05:20 PM   #78
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Quote:
Originally posted by Bitor1
The noise I was describing seems to point toward a throw out bearing going bad (@8500miles?????) anyways the noise is there when I depress the pedal to it's extreme position (pedal all the way to the floor) And the grinding accelarates with the engine speed. Release the pedal and it's gone. I do not have this noise when the tranny is engaged in neutral so I don't think it's a gearbox bearing.

Not to confuse anyone but the other noise I have is what everyone else has been descibing : off throttle deceleration rattle. And this is what this post is trying to address. And just to point out, I have the kartboy hardened shifter bushings installed and this problem was there before I installed them so I don't think they make a difference. However I have read posts that indicate redesigned clutch parts may be the correct fix. SUBARU if your listening we all love our cars but what's the deal with the tranny problems?

Thanks for everyone's input....WE DESERVE A FIX FROM SOA


P.S. does anyone think it's rather peculiar that Subaru service techs have no idea of what we are taking about when we describe our problems? Unfortunately I think they know how to fix it but have there hands tied
Bitor:

Go to the dealer and have them diagnose the problem. If they won;t, ask for a factory rep. You cna always call Subaru.

Jan
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Old 11-28-2001, 01:10 PM   #79
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Just as an FYI:

I took my car in for the first time this AM and told the service advisor (who was pretty clueless) about the 3rd gear grinding noise. He said that he was AWARE of it, but that it was not a PROBLEM. I hope this is not the attitude SoA is taking with our cars. I also told him, whatever the case, that type of noise is not acceptable coming from a new car with a tick over 1000 miles.

He told me that they would look it at but not to expect it to be fixed. I have a feeling I'll be on the phone to SoA customer service tomorrow morning. If the dealers don't take this seriously, I'm going to take it up the corporate flagpole and see what happens. I think as a group, we need to really push hard on this at the dealer and corporate levels if we're going to get them to address this.
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Old 11-28-2001, 05:51 PM   #80
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Can someone please describe the noise exactly?
I have not heard anything under these conditions, but being a little paranoid, maybe I don't know what to listen for.
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Old 11-28-2001, 05:59 PM   #81
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There are two different noises that this thread seems to address. I have them both. Both noises occur when you take your foot off the gas pedal and the car is decelerating and the rpm's are around 3000. One is a higher, "tinny" noise that sounds like a thin metal vibrating; I get this noise most prominently in 2nd gear. The other is a lower, more gutteral noise that sounds like something grinding; I get this noise most prominently in 3rd gear.
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Old 11-28-2001, 06:24 PM   #82
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<kinda stupid point>I would like to add that I have only been able to detect the noise when the windows are all up and no radio blaring.</kinda stupid point>

I'm still not at a point to where i can easily replicate the noise, so i'm not going to show up at the dealership or get too upset about it for now. I will mention this to the service dept at Mastro Subaru next time my girl is in for service.
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Old 11-28-2001, 10:37 PM   #83
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I too have the lift off, engine braking deceleration death rattle(as well as my 2 friend's WRXs). Which SOA, if you are listening, is the one true thing that annoys me enough about this car to actually want to get rid of it and buy an Evo in a year or two as much as that pains me to say. I have the STI short throw shifter which in the last thousand miles or so, (have ~11,000 now) has developed an irritating rattle/vibration from the drivetrain resonance at 3900-4000rpms. I complained to the dealership about this noise. When I got it back the vibration was muted but still there and at present is back to it's full rattle again. I think I am going to try and put some foam around the shaft of the shifter some where and try to fix this. I shouldn't have to however. Anyone else with the STS have this 3900 rpm rattle?
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Old 12-03-2001, 06:34 PM   #84
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Just wanted to let everyone know that I have the same deccel in 3rd (2nd & 4th sometimes) gear grinding noise in my 00RS.

I took it to the dealer, they could not duplicate it but still wanted to help me. So they gave me a free 100,000 mile warranty on the drivetrain. That's pretty good service from a dealer, I think.
Although they didn't fix the problem, at least the gave me assurance that if anything breaks, it has been noted and will be taken care of under warranty.

Personally, I think it is a problem with poor design resulting in frequencies coming close to each other and resonating. When deccelerating through a certain rpm, the frequency of the rotating components matches up with the natural frequency of something in the trans and causes a huge resonance, which explains why the noise comes in stronger at certain rpms. It could be the rear diff that's going into resonance too.......I'm not sure. Thats why we have those two little tuned dampers mounted on the diff crossmember.
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Old 12-03-2001, 06:49 PM   #85
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Thumbs down

Does anyone have any updates or new solid facts on this issue? Does EVERYONE have this noise or just some people, I'm not very clear on this yet.

I'm calling my service department on Tuesday to have the issue looked at ASAP. I have a kartboy shifter on it's way and I don't want them giving me the shove saying it's the shifter kit causing the noise when I install it.

I did a little testing this week and I think I can easily replicate the noise now and I'm going to list off some observations:

I noticed the noise from day 1 and now my car has around 1600 miles on it. I can easily detect/replicate the noise in 3rd gear esp right between 4000RPM and 3000RPM decelerating with the engine with no brakes being applied. I could almost swear I have noticed it 4th gear once or twice before I was paying attention to the issue but I won't swear on it yet. I would describe the noise as a something like a metalic fluttering grinding rattling noise. If I had to visiualize the noise I would say it's like a flap/chunk of smaller metal fluttering or bouncing against teeth in a gear at a high speed. Please do take my desription with a grain of salt as I'm just trying to describe the noise best I can.

I even tried convincing myself it's a normal noise, but everytime I hear it I say to myself there is no way this a normal or in any way a good Subaru noise.

I'm going to try to rig up some audio capture this week to post the audio of the noise, but I'm not sure if that will work out well using the equipment I have available. (Sony DVCam).

Please keep us posted if you have any updates!

Last edited by lstepnio; 12-03-2001 at 10:21 PM.
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Old 12-03-2001, 10:06 PM   #86
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Default Decelleration noise fixed under warranty - new clutch assembly

Hello fellow WRX owners with the decelleration noise.

My WRX used to have the same noise as yours.

Subaru of america knows about the noise and has a fix for it.

After several trips to the dealer subaru replaced my clutch and throwout bearing assembly. Now, no noise!

Just take your WRX to the dealer, try to replicate the noise for them. Don't be shy, just make the poor sap ride around with you until you can make a great, loud, and readily noticable example of the noise. (if your noise was like mine it varied from annoying background rattling to shrill, resonant, oh my god its breaking, in intensity)

If you still have trouble with the dealer i can mail you copies of my repair under warranty. They contain a great record of the diagnoistic process and the clutch replacement under warranty.

Let me know
Tim
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Old 12-04-2001, 12:07 AM   #87
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Default Re: Decelleration noise fixed under warranty - new clutch assembly

This sounds good, but could you post some more details?

Was there something actually wrong visibly or not with the parts they replaced? Why did the dealership/soa decide this was the problem? Did the dealership replace them with the same parts or with a part with some type of fix?

How long has it been since this repair has been done? Has your tire pressure been adjusted to some of suggestions posted here(more pressure in the front, i think.)?

Thanks for all the info!

Quote:
Originally posted by Bailey
Hello fellow WRX owners with the decelleration noise.

My WRX used to have the same noise as yours.

Subaru of america knows about the noise and has a fix for it.

After several trips to the dealer subaru replaced my clutch and throwout bearing assembly. Now, no noise!

Just take your WRX to the dealer, try to replicate the noise for them. Don't be shy, just make the poor sap ride around with you until you can make a great, loud, and readily noticable example of the noise. (if your noise was like mine it varied from annoying background rattling to shrill, resonant, oh my god its breaking, in intensity)

If you still have trouble with the dealer i can mail you copies of my repair under warranty. They contain a great record of the diagnoistic process and the clutch replacement under warranty.

Let me know
Tim
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Old 12-04-2001, 02:45 PM   #88
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Thumbs up

I took my WRX to Mastro Subaru of Tampa today and brought a service rep for a ride along to demonstrate the decel noise. Mastro is claiming that they have seen this issue before in a couple other instances and both were related to a clutch replacement in one way or another and they went on further to say that the problem is with the clutch springs. The service rep also suggested *against* the tire inflation trick mentioned in this tread previously as that could cause other problems with the rear diff.

I was told that I will be contacted in the next week or two while they check with some folks, but it sounded like they will replacing the clutch. I already feel better knowing it's not too serious, but I really don't know how I feel about them replacing my clutch at 1600 miles unless I can be assured it will solve the problem.

I will keep you guys posted, thanks for all the help so far.
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Old 12-04-2001, 02:57 PM   #89
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Default Re: Re: Decelleration noise fixed under warranty - new clutch assembly

Quote:
Originally posted by lstepnio
This sounds good, but could you post some more details?

Was there something actually wrong visibly or not with the parts they replaced? Why did the dealership/soa decide this was the problem? Did the dealership replace them with the same parts or with a part with some type of fix?

How long has it been since this repair has been done? Has your tire pressure been adjusted to some of suggestions posted here(more pressure in the front, i think.)?

Thanks for all the info!

As part of the diagnostic process the dealer drove the car and changed/adjusted the tire pressure. I have no idea why. Apparently this was part of the diagnostic process that subaru technical service recommended.

When the car was returned to me (about a week ago) the tires were a bit nonuniform and low on pressure.

I have since returned the tires to recommended pressure (30 something front and rear).

The car is now silent!!!

The dealer said that the pressure plate has been redesigned in the clutch assembly. I never saw the original clutch. My understanding is that it was a design flaw. My car made the noise from day one. In other words, the decel noise was not caused by wear on the clutch.

Tim
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Old 12-04-2001, 04:35 PM   #90
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Default Yeah!

Bailey -

Could you please, please, please try to scan those documents so someone could post them here? If not, I could really use a copy. kevinc313@yahoo.com

I've had the sound since day one, and posted on this thread earlier. I've brought it to my local dealer and couldn't make the sound, and talked to a couple others about it.

As far as tire pressures go, I just recently tried a tire pressure of 36/31, went on a long drive - that got rid of the sound for the most part. I thought the ride was too soft so I upped it 42/36.5, still no noise. I was running 40/36 and it would crop up occasionally. The first 1000 or so miles I had the car, I was running 40 psi all around and the sound was real bad.

I think I'm going to put my stock exhaust back on, adjust my pressure to 40, and go bother my dealer......yippee!

Thanks,

Kevin
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Old 12-04-2001, 05:47 PM   #91
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hey guys set the tire pressures at 30 psi-take out 4lbs in the front and put 4 lbs in the rear-if the noise gets worse it is the clutch.the springs vibrate in the clutch disk-i was told there is a updated clutch for this noise-since both differentals have a different gear ratio the disk is vibrating on decel causing the noise-this is the info i got-i have yet to try it my customer is coming in this week,i will let you know
dave
mspt
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Old 12-04-2001, 06:06 PM   #92
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this is just a test with the tire pressures to see if the noise increases on deceleration-if it does it needs the updated clutch there are new part numbers,they have not given them to me yet
dave
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Old 12-05-2001, 11:29 AM   #93
Jarrod Li
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As a side note here are all the 2002 Subaru Impreza Technical Service Bulletins reported to date according to alldata.com

Code:
TSB Number   Issue Date  TSB Title 
16-63-99R    AUG 00      A/T - 4EAT Remanufactured Transaxle Available
01-151-00    JUL 00      Warranty - Mandatory Replacement Fluids
11-61-00     JUN 00      State Emissions Test - Fuel Filler Cap Test Procedure
I also have the decel noise described. I have delrin shifter bushings installed with my short shifter, not sure if that would have an effect on how loud the noise is though.

As another side note I currently have the Apex Springs installed, going to be reverting to stock for winter soon, maybe that will make a change if it's drivetrain angle related.

Current Tire Pressures, which were set by the dealership at last service when tires were rotated.
Driver F: 31
Driver R: 31
Pass F: 30
Pass R: 29

Going to play with the pressures tonite/tommorow and see if there is any difference.

Last edited by Jarrod Li; 12-05-2001 at 01:52 PM.
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Old 12-06-2001, 11:12 AM   #94
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Default BUMP!

BUMP!
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Old 12-06-2001, 02:40 PM   #95
Tomnel
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Do you think having a short shifter (stock bushings) will cause dealers not to cover the clutch work under warrenty?
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Old 12-06-2001, 04:12 PM   #96
Jarrod Li
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It should not. I imagine that some dealers will try to say that it caused it but it can't. What a short shifter does is to change the angle that the linkage attaches to the shifter lever. The higher the linkage goes the shorter the shift. However that shouldn't have anything to do with how the linkage works with the tranny. It's kinda like if you lift up the back of your car off the ground with the front wheels blocked. The contact patch on the front tires is still the same piece of tread that was touching the ground when all four wheels were on the ground. What changed was the axle assembly in the front wheels rotated.

So in short there will probably be some dealers that might try to "shaft" (pun intended) you and say that it is the levers fault. That's why mine is coming out before I visit my dealer, just to be sure. My dealer isn't that bad, but I wouldn't put it past the desk jockey (jerk) that they have working there to try to blame it on me or my short shifter.
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Old 12-07-2001, 01:57 PM   #97
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The Decemebr 10, 01 issue of Autoweek (page 18) mentions a noise on their long-term test WRX.
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Old 12-07-2001, 02:00 PM   #98
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can someone scan that and post the article?

Quote:
Originally posted by superspd8
The Decemebr 10, 01 issue of Autoweek (page 18) mentions a noise on their long-term test WRX.
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Old 12-07-2001, 02:48 PM   #99
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Default I have that noise as well

I usually have the radio on, but since I read this thread, I tried to listen for this noise, and I also have it in 3rd and 4th gears during decel around 3000 rpm. I took it to the dealer because I had intermittant CEL this week. I also had the tech test drive for this sound. They heard the sound but said that Subaru of America has sent them a service update and in it they say this is "normal."

So the service director refused to do anything with it. By the way, this is @ Assael Subaru in Monrovia, CA. They also pulled the same CEL code and couldn't figure out why it may have come on. I told the service director about problems reported on i-club.com and how a few people have gotten their clutches replaced which cured the problem. He said "I don't care about the internet, I follow what Subaru sends us. I can't very well condemn a clutch with only 1500 mi on the car." What an assinine attitude. I will be taking the car to a different dealer to have it looked at.
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Old 12-07-2001, 03:53 PM   #100
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I am new to the list and Subaru.

Please, what is a "CEL" code?

Jan
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