Clutch "Shudder"?
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This is a discussion on Clutch "Shudder"? within the Transmission & AWD forums, part of the Tech & Modifying & General Repairs category; I bought a 2002 Subaru WRX two weeks ago. It is all factory except the SPT exhaust and BBS wheels. ...

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    Clutch "Shudder"?

    I bought a 2002 Subaru WRX two weeks ago. It is all factory except the SPT exhaust and BBS wheels. The car has just hit 46,000 miles on it. Well its getting colder now in the past 2 weeks in PA and sometime when letting the clutch out to pull away from a complete stop it seems like the clutches "shudders" and the car shakes. Doesn't do it all the time seem more noticeable when cold. Has anyone had this issue and what do you think is causing it.

    Thanks,

    Eric

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    Moderator T0rque's Avatar
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    My 02 has the same issue but it is all the time meaning it just needs a new clutch. Your problem since it is when it is cold outside with a combination of low mileage you may be able to flush the clutch fluid, it can be from moisture in the system and somewhat freezing when cold. Flush the brake fluid as well while your at it..

    Otherwise it could simply be your not used to the car yet.. I've driven a ton of cars and owned over 50 cars in my 13 years of driving.. WRXs seem to be the most finicky manual trans/clutch wobbers on earth.. LOL.. Good luck and have fun with it


    Lead Wrench @ WTF Tuning, LLC

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    He simply abides. SD_GR's Avatar
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    Quote Originally Posted by legend83 View Post
    Has anyone had this issue and what do you think is causing it.

    Thanks,

    Eric
    Eric this was very common.

    Subaru replaced clutches for free, including a new flywheel. Since your car has low miles it may not have had the free replacement at the time. Check with a dealer using the VIN to see if the clutch has been replaced under warranty when the car was new.

    My clutch and flywheel were replaced for free when the car had 30,000 mi. and at the time it was a common complaint. The clutch is simply grabby and mostly when cold. You will notice that once the car and/or the weather warms up, the problem will become less frequent. People that did or could not get the free replacement just waited until the existing clutch wore out and replaced it anyway.
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    Moderator T0rque's Avatar
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    Hhmm I thought that was because the flywheel was to light causing some weird rev matches


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    Administrator Trainrex's Avatar
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    A shuddering clutch can happen for a few reasons.

    Glazed clutch disc and/or flywheel/pressure plate.

    Contamination of the friction material.

    Over heated/faulty/loose anti-rattle springs.

    Warped clutch disc, pressure plate, or flywheel.

    Whichever reason, it shouldn't do that. If it's not bad, the clutch could last a long time like this. When not severe, it's more of an annoyance than anything.

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    Administrator Trainrex's Avatar
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    Quote Originally Posted by T0rque View Post
    Hhmm I thought that was because the flywheel was to light causing some weird rev matches
    Nope.

    I forgot to add poor design to the list. I've had a few aftermarket clutches that did this right off the bat because they weren't designed well.

    Edit: I forgot to add that Subaru's bandaid for the problem was to install a heavier flywheel to help quell the shudder from the poorly designed clutch.

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    Ok i am going to check with a Suabru dealer with the VIN and see if the clutch has been replaced. If it in fact wasn't will they replace it for me since it is doing this? Will there be a cost to me. It only seems to had the "shuddering" when the car is cold and once warmed up and driving usually doesn't do it anymore. I will call them today once i get home from work and look into this some more. I have not driving the car hard and it is usually shifted before it gets on boost for the most part my girl drives it most of the time as I lost my license for a couple months.

    Thanks for all the replies,


    Eric

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    He simply abides. SD_GR's Avatar
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    Quote Originally Posted by legend83 View Post
    Ok i am going to check with a Suabru dealer with the VIN and see if the clutch has been replaced. If it in fact wasn't will they replace it for me since it is doing this?
    I doubt it. It's been 7 years. Stranger things have happened though. Show them this:

    http://www.clubwrx.net/forums/transm...68&postcount=4
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    Man is a brute.... If you're cruel to him, he respects and fears you. If you're kind to him, he plucks your eyes out. Alexis Zorbas
    I lied. I cheated. I bribed men to cover the crimes of other men. I am an accessory to murder. But the most damning thing of all... I think I can live with it. And if I had to do it all over again - I would. Benjamin Sisko
    DISCLAIMER: Opinions expressed are the author's alone and are inherently worthless.

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    Moderator T0rque's Avatar
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    Quote Originally Posted by Trainrex View Post
    Nope.

    I forgot to add poor design to the list. I've had a few aftermarket clutches that did this right off the bat because they weren't designed well.

    Edit: I forgot to add that Subaru's bandaid for the problem was to install a heavier flywheel to help quell the shudder from the poorly designed clutch.
    what clutch replacement do you recommend Andrew?


    Lead Wrench @ WTF Tuning, LLC

  11. #10
    Administrator Trainrex's Avatar
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    Quote Originally Posted by T0rque View Post
    what clutch replacement do you recommend Andrew?
    The latest updated clutch from the dealer. Our stock clutches are very capable and stout for even high power setups. I know everybody says to upgrade, but I don't agree with it. Those here that have burnt clutches didn't do so with power levels. They did it with bad driving.

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    Good news, everyone! xxxxxxxAnub1s's Avatar
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    Quote Originally Posted by Trainrex View Post
    The latest updated clutch from the dealer. Our stock clutches are very capable and stout for even high power setups. I know everybody says to upgrade, but I don't agree with it. Those here that have burnt clutches didn't do so with power levels. They did it with bad driving.
    +1 to this.
    Cody
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    Good news, everyone!

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