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      11-11-2012, 03:48 PM   #1
Socrates.Tii
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rattle sound when engaging clutch

135i 2008 manual transmision 44,500 miles

sometimes when I come to a full stop and put 1st gear in and let off the clutch peddale and press the gas pedal I hear this rattle

what can it be?
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      11-11-2012, 04:11 PM   #2
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Generally rattle on our N54s is the turbo wastegate. In some cases it can mean a failing turbo, wastegate actuator and/or other component (for example vacuum hoses that work the actuator), but apparently a lot of people also have the rattle and do not experience problems. Do you have any power loss / CEL light / error codes?
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      11-11-2012, 04:21 PM   #3
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I think thats normal it has to do with the dual mass flywheel.
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      11-11-2012, 05:37 PM   #4
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Quote:
Originally Posted by Fed P
Generally rattle on our N54s is the turbo wastegate. In some cases it can mean a failing turbo, wastegate actuator and/or other component (for example vacuum hoses that work the actuator), but apparently a lot of people also have the rattle and do not experience problems. Do you have any power loss / CEL light / error codes?
no cel lights or power loss but it happends when I let go of the clutch and shift to 2nd .


dont we have extended warnty for wastegate and hpfp until 100,000 miles?
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      11-11-2012, 06:00 PM   #5
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Quote:
Originally Posted by FactorX81 View Post
I think thats normal it has to do with the dual mass flywheel.
We are seeing a lot more threads documenting the clutch chatter lately. The general consensus is it is normal and due to our cars maturing in mileage. My car has it. The clutch grabs well and it drives great, just a slight chatter from stops.
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      11-11-2012, 08:50 PM   #6
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I hear mine especially when I pull into and out of my garage which has cement block walls. I've had this noise since new really and I only have 20K on the clock.
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      11-11-2012, 11:20 PM   #7
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I get it to, I am at 13k mi. Noticed it more after I added the LSD.
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      11-12-2012, 01:42 AM   #8
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Worn throwout bearing perhaps?
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      11-12-2012, 06:25 AM   #9
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I still think at least half of these guys have the turbo wastegate rattle You can try and find some videos on youtube to compare your sound and theirs.
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      11-12-2012, 09:38 AM   #10
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Quote:
Originally Posted by ilikebmxbikes View Post
We are seeing a lot more threads documenting the clutch chatter lately. The general consensus is it is normal and due to our cars maturing in mileage. My car has it. The clutch grabs well and it drives great, just a slight chatter from stops.
+1 for me exactly!
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      11-12-2012, 11:38 PM   #11
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Sounds like clutch chatter. As mentioned before in this thread, it is pretty common amongst manual transmissions. I have had it for the past ~25k miles and haven't had any other issues with it.
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      11-13-2012, 08:02 AM   #12
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I have this also, and especially when I shut the engine off with clutch engaged in neutral. I get a pretty noticeable chatter. Chalked it up to normal rotational vibrations from the clutch assembly.
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      11-13-2012, 11:43 PM   #13
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Quote:
Originally Posted by Fed P View Post
I still think at least half of these guys have the turbo wastegate rattle You can try and find some videos on youtube to compare your sound and theirs.
what makes you think that? somedbody should post a video so we can hear the difference
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      11-14-2012, 07:59 AM   #14
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Only because the description in words is so vague that it is perfectly possible to take one for the other, and wastegate rattle is *really* common. It seems we both agree - somebody should do a video =)
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