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Old 02-22-2002, 05:09 AM   #1
WRX Pilot
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Default Deceleration Noise Issues: Clutch Only.

There have been a couple of threads on the “deceleration noise” but they all seem to go off topic real fast. Yes there are many “noises” with the WRX but the clutch deceleration noise is a known problem with a known fix. So lets keep this thread on topic…….. the clutch deceleration noise.
It is not caused by tire pressure or the turbo, it’s the clutch.
Here is how (one way anyway) to tell if you have this problem:
Run your WRX at around 3200-3400 rpm in third gear, preferably down hill, and let off the gas pedal (coast).
This will produce the noise. Then slightly apply the clutch pedal but not enough to engage the clutch. If the noise stops, you have the “deceleration noise” caused by the clutch. You can also do this by applying the gas under the same circumstances. In either case you are “re-loading” pressure on the clutch components which stops the noise.
So post up your experiences with this issue and lets hope we can all have it rectified soon.
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Last edited by WRX Pilot; 02-26-2002 at 04:08 AM.
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Old 02-22-2002, 07:46 AM   #2
strangerq
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Default

I appreciate your effort to clear up the confusion - so, let me, uhm...add to the confusion.

Supposidly the clutch spring noise issue is effected by tire pressure.

One of the symptoms is supposed to be that increasing front
tire pressure relative to rear makes it go away, and doing the opposite makes it worse.

That is the case with my car, and from everything i've heard (on i-club) it is a clutch issue.

Just so you know.
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Old 02-22-2002, 09:59 AM   #3
scott_gunn
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Yes, the tire pressure test is given by the SOA tech line to help determine if the noise in question is the "clutch spring rattle."

And this problem (IMO) has already been rectified by SOA. If you have the deceleration noise, take your car to the dealer and show them. If they don't want to do anything, tell them what you've learned from here and ask them to call the SOA tech line. If your car has the old-style clutch, it should be replaced.
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Old 02-22-2002, 11:10 AM   #4
Red Rocket
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Default Noise details.....

My car stops making the sound when I press the clutch about half down, actually disengaging it, or when I just pop it out of gear without using the clutch. I can have very very light pressure on the gas pedal and be decellerating very slightly and still get the noise, then when I pop it out of gear the noise stops, but the rpms drop slowly because I still have my foot on the pedal. What is going on!

I would also like to note that the rattle my car makes is of constant tone even while it is decellerating. The normal gearbox noise "tone" gets lower as RPM's drop.

Is this consistant with people who have had their rattle fixed with the clutch replacement?

Kevin
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Old 02-22-2002, 01:39 PM   #5
strangerq
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re: Is this consistant with people who have had their rattle fixed with the clutch replacement? >

I'd say do the tire pressure test.

It's fun.

Everyone's doing it!
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Old 02-22-2002, 03:49 PM   #6
scott_gunn
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My dealer told me I had the infamous "clutch spring rattle" that was common on our WRXs. Their "fix" was to put my tire pressure back to stock specs (I had raised it about 4 psi front/back). I can barely hear the rattle now. One day, I'll probably make them go ahead and replace the clutch for this. But not yet.
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Old 02-24-2002, 02:31 PM   #7
WRX Pilot
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Default More imformation.....

Here is some good info posted by Red Rocket on another thread….. good to know!

Vin. Numbers & Symptoms.
- Rattle under de-cel usually in 3rd gear, 4000-2000 Rpm usually.
- Increase rear tire pressure 4 psi, decrease front 4 psi, should get louder. Do the opposite, should get quieter.
- If the last six digits of you VIN are lower than 515611, you have the old type clutch from the factory. If your motor number is less than 331738 (white tag, hard to find), you have the old clutch from the factory.
- The official subaru tech line fix (as of today), is IF your car HAS the OLD clutch parts as indicated by the VIN and Motor numbers, IT IS TO BE REPLACED BY THE FOLLOWING PARTS:

30100AA790 - Disc
30210AA530 - Cover (pressure plate)
12342AA050 - Flywheel
800610740 - Bolts


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Old 02-25-2002, 01:18 AM   #8
ANZAC_1915
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Default

Every WRX I have driven has this noise.

Except the automatic ones.
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Old 02-25-2002, 12:17 PM   #9
gavski
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Default I have it too...

Just bought a used WRX with 17k miles. Mfg date is 2/01, and last of VIN is 503587. I clearly am in the red zone by those statistics.

Took it for a test drive yesterday and today, and noticed the noise immediately when coasting down in 3rd gear. More noticeable downhill, but can hear on flats as well.

Sounds to me like backing up in a manual trans car (using straight gears instead of the helical gears in 1-5 or 6). Make it a little random and a little buzzy/rattle and thats my noise.

Hopefully the dealer will get on board quickly thanks to the efforts of those on this forum. Would be disappointing otherwise, particularly since its my first Subaru.

- Jeff
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Old 02-25-2002, 05:52 PM   #10
gavski
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Default Part I - Visit to the Dealer

Posted above on my WRX with the noise. Just went to the dealer I purchased the vehicle from and they were very helpful.

I told the service manager, I just bought the vehicle there and was hearing "clutch noise." I mentioned I found out that others have had similar symptoms, and told him I'd like to take a tech for a ride or make an appointment to do so.

Surprisingly, he said something like "well if its coming from the clutch, we'll have to check it out," then immediately called a senior tech in for a test ride.

I took the guy out for about 1/2 hour, and got to a hilly area where I could make the noise. [NOTE: Make sure car is well warmed up. I went cold to the dealer and the noise wasnt nearly as loud until the way back] He heard it, and asked about any exhaust problems (heat shields I guess). I then demonstrated the noise was a funtion of throttle and clutch position. The guy was totally supportive (said they really take care of people who buy at the dealership), and said he had heard quite a few like that but nobody had complained. Noted my car was pretty quiet otherwise.

I kept telling him about the tech line, and we agreed the noise was on decel in 3rd from about 4k rpm down. He marched into the service manager and told him to write up "noise under decel in 3rd gear under 4000 rpm," and said "we'll have to call subaru and see if they can help us out with this one."

Service manager schedules me to bring it in the Friday, and said he'd call if there was a problem with getting parts.

So far - pretty darn good. If Friday works out as well, my dealer has to be listed as one of the good guys.

BTW, also got a key made free while I waited. Nice!

- Jeff

Another note: I'm a 30-something professional and was dressed in my normal business attire. That, and the fact I bought my car there, probably helped.
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Old 02-25-2002, 06:48 PM   #11
MooBob42
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WR Blue

Unhappy

I just bought a new WRX (just hit 1,000 miles today) and I have this problem too. Some have described the noise as "grinding," but in my car, it sounds like an amplification of engine noise. My VIN number is in the 800,000s, so I'm okay on that count, but I don't know where the sticker on the motor is, so I can't check for that.

I'll take the car up to 4,000 RPM in 3rd, decelerate, and I'll hear this loud BWAAAH noise coming from what sounds like the engine bay. It doesn't go away unless I push the clutch in past the engagement point. I tried pushing the shifter up, but it didn't help much.

It might be unrelated, but I've had a spring noise coming from my clutch since day one, where you press the clutch in and you hear a spring compression noise on the way down and an expansion noise on the way up. I used to have a Civic that had a similar noise, and the problem there was just lubrication.

For those of you who've had your clutch replaced, how long did it take? (Just the actual install) The dealership where I bought my car is about 50 miles away, so if it takes more than a day, I'll need to drop it off at a closer dealer. I need to go back to the original dealer anyway, to pick up my license plates, so I figure if it doesn't take too long, I can leave it there for a few hours.
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Old 02-25-2002, 07:46 PM   #12
KwanDDS
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Unhappy clutch noise

I have 750 miles on my WRX wagon. I've only recently began to notice this noise, since i only hear it when I shift from 2nd to 3rd at a high enough RPM (at least 4500). It sounds like there's a lose spring rattling around in there.
I dont hear any deceleration noises as mentioned around here. At least not yet.
Any one else have this problem?

Thanks.
BTW, new to i-club. This place is awesome
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Old 02-26-2002, 10:39 AM   #13
jimb
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Would an aftermarket clutch (cusco or otherwise), fix the problem? I know for alot of folks this wouldn't necessarily be an option, but for others eventually looking to upgrade, would it be a solution?

jb
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Old 02-26-2002, 03:05 PM   #14
bjteel
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What are the STi part numbers for the parts necessary to fix this. I know standard WRX parts will fix it, but like someone said, why not go with STi while it is apart.

So what are the part numbers? Where can I find other STi part numbers?

My dealer told me that I can't get anything STi or SPT from them. What A**holes!
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Old 02-26-2002, 05:42 PM   #15
jhonas
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Is this only WRX's or any 2002 Impreza with a manual transmission? My vin falls in the number range. Not sure about engine number... where would I find this? I haven't heard this noise, but have never been listening for it, and am usually not decelerating in 3rd at 4k.
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Old 02-27-2002, 02:33 AM   #16
aiRX
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is there an subaru official technical bulletin to refer to when requesting service for decel and shudder problems in case delaer is not receptive to my compalins?
thanks
sasha
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Old 02-27-2002, 03:07 PM   #17
powertothepedal
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I finally got around to having my vehicle serviced. My car was built 5/01. They replaced the following parts:

30100AA790 DISC CP CLUTCH
30210AA530 COVER CP CLUTCH
12342AA050 FLY WHL AY F
800610740 PT190301 BOLTS
30502AA080 BRG CLUTCH R
806212020 BALL BRG 12X

It says right on the work order that the tech line told him to install a new clutch assembly. Of course, this is after having my car for four days and swapping parts in and out. I told the service manager on the third day that I read something about the problem and the clutch assembly had to be replaced. He was like no that's not the problem. On the fourth day he called me back and said the clutch assembly had to be replaced. It took three weeks to get the parts in. But, now ahhhh the rattle is gone!
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Old 02-27-2002, 04:54 PM   #18
Red Rocket
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Default Yep!

Still getting jerked around by the dealer, won't admit they put the wrong (old) parts in my car. Thankfully some subaru regional tech guys are coming Tuesday to look at the car.

Kevin
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Old 02-28-2002, 03:23 AM   #19
WRX Pilot
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Angry Red Rocket…… that sucks!

I’m taking my car in on Monday the 4th and I’m giving them a parts list and requesting that they give me all the packaging from the new parts as well as all of the old parts.
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Old 02-28-2002, 04:47 PM   #20
strangerq
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re:this only WRX's or any 2002 Impreza with a manual transmission? My vin falls in the number range. Not sure about engine number... where would I find this? I haven't heard this noise, but have never been listening for it, and am usually not decelerating in 3rd at 4k.>

Don't worry. This is like diarrhea. If you had it, you'd know.
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Old 03-01-2002, 02:30 AM   #21
slidewayz
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Black

Default got the poop's?

Thats for sure! It is a very loud sound, you can't miss it.
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Old 03-01-2002, 03:12 PM   #22
2.0 guy
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Default

wonder if the 8xxxxx vs the 5xxxxx is the check digit for the wagon vs the sedan...

I've got a wagon with the 8xxxxxx and my engine number (according to invoice) is 276xxx which clearly fits in those guidelines. I have the clutch noise too, as I did in my S2000. It was MUCH MUCH worse in my S2000, and a clutch replacement fixed it right up... it used to sound like a busted motor mount...

The WRX noise is subdued, but if a clutch would fix the noise, it would be nice. It would let me hear the rattles a little more
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Old 03-01-2002, 03:27 PM   #23
bjteel
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I have a VIN of in the 520xxx's, so I will have to check the engine code tonight.

I haven't really noticed a "loud" noise, but there is a little one. I just assumed it was a Subaru or an AWD thing.

Are the numbers proof enough for SOA to fix your car if the noise isn't really apparent?
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Old 03-01-2002, 09:49 PM   #24
scott_gunn
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bjteel - I am wondering the same thing. At stock tire pressure, the noise isn't really loud enough. I would feel stupid complaining about it. However, I like to run a few extra psi in my tires. It is loud with a few more psi - but I'm not sure that's a convincing argument to use - the SOA rep could just say that my car has no problems when operating within factory specs. My VIN is well below the necessary range so I'm sure I have the old designed parts.

I'm also worried that if I don't replace it now, and later move to bigger wheels or stiffer tires that the noise would come back, but then it might be too late (post 36000 miles).

I wish SOA would just recall the damn thing. They know it has a problem.
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Old 03-02-2002, 03:07 AM   #25
WRX Pilot
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Default Get it in there and fix it!

Time is important! My dealer wanted me to get my clutch replacement done ASAP as to make it easier for him to get the repair approved. The reason being that they are not wanting people to start asking for the repair to just have a new clutch installed. I can see their (SOA) concern. I’m getting mine done on Monday, march 4th. My WRX has 7100 miles on it. But I have been involved in having this problem resolved since the second week I owned my WRX (July 2001). At that time they did not yet know what caused the problem.
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