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Old 09-04-2018, 10:14 AM   #1
08OBS
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2018 Colorado Duramax

Default 2005 Subaru WRX Pedal Assembly Broken

Recently on my 05 WRX the clutch pedal was not fully returning after being depressed. I changed the clutch master cylinder, slave cylinder, and hydraulic line. I bled everything properly and I was still having the issue.

I then decided to record the movement of the slave to make sure it was working and I found my firewall to be moving. Below are two videos I took of the movement. Has anyone ever seen this on a GD chassis before? I know 08 to 14 GR's had this issue. The pedal assembly broke causing the movement of the firewall.


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Last edited by 08OBS; 09-09-2018 at 07:34 PM.
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Old 09-09-2018, 07:32 PM   #2
08OBS
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Update:

The pedal assembly broke. The two tabs with the studs for the cutch master cylinder cracked off. One cracked off and the other one was just about there. The firewall was pushed forward a little but I should be able to bend it back into the original position.







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Old 09-14-2018, 09:50 AM   #3
08OBS
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I replaced the pedal assembly yesterday and the car drives great. For anyone who feels a sudden change in their clutch pedal I suggest going under the steering wheel and looking at these studs. It's such a weird thing to break it took me a few days to find it.
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Old 09-14-2018, 02:00 PM   #4
car_freak85
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Wow, that seems way out of the norm. Are you the original owner? I wonder what in the car's past may have caused that?
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Old 09-14-2018, 04:27 PM   #5
08OBS
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Quote:
Originally Posted by car_freak85 View Post
Wow, that seems way out of the norm. Are you the original owner? I wonder what in the car's past may have caused that?
I've owned the car for the past 7 years. I think the heavier pressure plate in the car had something to do with it. This is still a very strange thing to break.
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Old 09-23-2018, 09:28 PM   #6
chilakas
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Quote:
Originally Posted by 08OBS View Post
I've owned the car for the past 7 years. I think the heavier pressure plate in the car had something to do with it. This is still a very strange thing to break.
Im on my 3rd pedal assembly, for some reason i keep cracking these things, i fabricated a bracket but to support the assembly but now it's really stiff. I hope you dont have the same issue but you should keep an eye on that thing. If the original broke it might be for a reason and the new one might break as well. I will be replacing my clutch master cylinder to see if is the issue as everything else has already been replaced.
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Old 09-23-2018, 09:32 PM   #7
Charlie-III
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Quote:
Originally Posted by chilakas View Post
Im on my 3rd pedal assembly, for some reason i keep cracking these things, i fabricated a bracket but to support the assembly but now it's really stiff. I hope you dont have the same issue but you should keep an eye on that thing. If the original broke it might be for a reason and the new one might break as well. I will be replacing my clutch master cylinder to see if is the issue as everything else has already been replaced.
I have read, and replied, to your thread. My question, the loads from the pedal should be pressing the bottom brackets into the firewall, thus my comment of flexing firewall. Since the broken mount is in compression, I just don't see how it's breaking IF the firewall is solid.
If the top mounts were breaking, yes, too much load could exceed what the bracket tab was designed for.
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