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Old 04-23-2002, 11:46 AM   #1
Evaider
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02 Impreza WRX
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Have a Nice Day? Clutch problem... with new clutch...

Ok... I finally got my clutch replaced by the dealer. It had a million issues including the decel noise.... now everything is gone. Shifts are much smoother no noise its great. Except for one thing, now whenever I bring the clutch to the engagement point in an attempt to move the car say 6 inches the whole front end shakes and vibrates. It is even worse if the car is under any load such as an incline... If I rev it to about 2K before slowly letting the clutch out it isnt as bad but it will still do it. Should I take it back to them? Or should I give the new clutch a few hundred miles to wear in. I was driving around a parking lot yesterday to try and get use to the clutch and after about 20 minutes it seems to be a lot better, but today the problem is back!

My poor baby! The scratched her at the dealer too! GRRRRR......!

Any advice?
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Old 04-23-2002, 01:03 PM   #2
Bronco
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Angry

I had a similar problem with my car, Clutch chatter at about 55,000 km (30,000 mi). The dealer ship replaced the clutch disc, release bearing and machined the flywheel....and also replaced the Transmision housing. The service manager told me what happens is the release bearing wears into the aluminum nose piece that the release bearing rides on and once this happens is it will start to hang up on the ridge that is worn into it. I have about 10,000 km since work and all is well.
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Old 04-23-2002, 02:11 PM   #3
Evaider
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They replaced the clutch, flywheel, and release bearing already... So maybe they need to replace the transmission housing now? ugh.
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Old 04-23-2002, 03:35 PM   #4
Bronco
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Ask the dealer if there was any wear on the nose piece , a groove of any sort can hang the bearing and not allow the clutch to release smothly. I had no idea this was the problem I thought I had a weak clutch. I mentioned it i passing when I was getting some work done. When I brought the car in for the work the dealer had already ordered the housing before even looking at it. That would suggest it is a fairly common problem. They also replaced the short block to eliminate a piston noise.
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Old 04-23-2002, 10:47 PM   #5
TerenceT
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aftermarket or oem clutch?
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Old 04-23-2002, 10:52 PM   #6
Evaider
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OEM clutch, flywheel, bearing, and pressure plate.
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Old 04-24-2002, 10:00 AM   #7
Bronco
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All is stock before and after repair
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Old 04-24-2002, 11:32 AM   #8
HndaTch627
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clutch shudder in these cars is perfectly normal, you just gotta learn how to drive around it.

jeremy
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Old 04-24-2002, 12:03 PM   #9
Evaider
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Quote:
Originally posted by HndaTch627
clutch shudder in these cars is perfectly normal, you just gotta learn how to drive around it.

jeremy
ahhh. no. I dont think this is normal. This is about 1000X worse than normal. It feels like the transmission is going to fall out. And it didnt do it this bad before they replaced the clutch. It honestly feels like the car is going to fall apart you can physically see the front end shake. Is that normal? If it is I want a refund on my car!
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Old 04-24-2002, 01:15 PM   #10
TerenceT
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ok, my theory.. noone has prove me wrong or right

1) factory pressure plate is weak on some cars, in fact, so weak it has trouble holding the clutch disk in causing it slip while the cluth is engaged
2)this slipping cause the disk to overheat and wrap, wrap disk would bent when cold, so during start up, you get shuddering

i would bring your car back to the said dealer immediatly since supposedly you get a new clutch. in that case, i am leaning towards installation error. have them check the clutch slave cylinder cable to see if it's loose
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Old 04-24-2002, 03:54 PM   #11
HndaTch627
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actually the clutch plate can't warp....it's not a solid metal object...clutch shudder is caused by uneven wear on the disc surface. You are hitting hte high points when you are shuddering...htis normally happpens right at the friction point...it happens on all cars but is most noticeable on AWD cars cause the powertrain can't flex easily.

jeremy
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Old 04-24-2002, 05:40 PM   #12
Evaider
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Quote:
Originally posted by HndaTch627
actually the clutch plate can't warp....it's not a solid metal object...clutch shudder is caused by uneven wear on the disc surface. You are hitting hte high points when you are shuddering...htis normally happpens right at the friction point...it happens on all cars but is most noticeable on AWD cars cause the powertrain can't flex easily.

jeremy
So what does this mean? Its a brand new clutch it should not be worn unevenly, was it installed unevenly then? Should I take it back? Or will everything eventually wear down so that it is even and not as noticeable? It is frustrating having to deal with this when driving, it makes the car almost un-driveable.
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Old 04-25-2002, 12:29 AM   #13
TerenceT
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Quote:
Originally posted by HndaTch627
actually the clutch plate can't warp....it's not a solid metal object...clutch shudder is caused by uneven wear on the disc surface. You are hitting hte high points when you are shuddering...htis normally happpens right at the friction point...it happens on all cars but is most noticeable on AWD cars cause the powertrain can't flex easily.

jeremy
1)it doesn't explain why it only happens when its cold.
2)had and quattro before, never happen, awd also
3)i hope it doesn't happen on all car

Evaider, you are talking about cold shudder right? it goes away in a mile or so and worst when you are trying to start from stop signs? feels like you have a 3 puck race clutch kinda shudder right?
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Old 04-25-2002, 01:54 AM   #14
Evaider
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Quote:
Originally posted by TerenceT

Evaider, you are talking about cold shudder right? it goes away in a mile or so and worst when you are trying to start from stop signs? feels like you have a 3 puck race clutch kinda shudder right?
Shudder all the time. Doesnt really go away but gets a tad bit better after driving it for a while. Highway driving doesnt seem to count, only stop and go type driving. And i ahve no idea what a 3 puck race clutch feels like but ill just agree.. hehe
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Old 04-25-2002, 03:19 AM   #15
HndaTch627
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Quote:
Originally posted by TerenceT


1)it doesn't explain why it only happens when its cold.
2)had and quattro before, never happen, awd also
3)i hope it doesn't happen on all car

Evaider, you are talking about cold shudder right? it goes away in a mile or so and worst when you are trying to start from stop signs? feels like you have a 3 puck race clutch kinda shudder right?
1)it does not only happen when it's cold...you only feel it when it's cold, i can make it shudder when it's nice an hot...you have usually burned off the unevenly worn area.

2)i'm guessin A4 which is a transverse mounted engine...they way the power plant sits it tends to absorb the shudder much nicer...and subaru uses a 50/50 center diff to control power output...IIRC Audi's varies depending on load...therefore the shudder is transmitted to the tires..not the car.

3)i can tell you it happens on all cars

you may wanto call about your concern but i don't see how clutch shudder would make a car undriveable?? it just takes more skill and care to drive it. And there is no cable...it's a hydraulic clutch system.

jeremy
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Old 04-25-2002, 09:34 AM   #16
Bronco
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My car had a cluch chatter when first starting and got better once it warmed up, but it was still there if you shifted hard. It was great after the clutch and transmision housing were replaced. Like I said before the dealer had ordered in the housing before he had the transmition out to inspect it.
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Old 04-26-2002, 12:42 PM   #17
Evaider
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Heres an update for everyone.... Its 99% gone. I rarely notice it anymore. So give it another week and it should be 100% gone.
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Old 04-27-2002, 05:58 PM   #18
sperry
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Evaider--

I had the same warranty clutch swap done on my car. Right after getting it, the clutch shuddered at low rpms and the pedal was *very* soft. After about 300 miles, the pedal feels like it used to, and the shuddering is gone. I think it just needed breaking in.

--Scott
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