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Clutch noise
06-26-2016, 09:54 AM
Post: #1
Clutch noise
2007 VW Jetta GLI 2.0T stock 82k SC. I've had it one year so far. One day last week the clutch pedal stuck halfway up but returned to normal after pressing it down again. Yesterday while starting off at the intersection just past my driveway (on an incline) there was a horrible clunking noise when I let off the clutch. Since then there's a noise whenever the clutch is depressed.
At idle: https://www.youtube.com/watch?v=EPUnn9FuaT8

The noise gets louder with the engine running faster. The clutch engages and it's driveable. It is silent when in gear and clutch pedal released.

Any suggestion on the diagnosis?
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06-26-2016, 12:36 PM
Post: #2
RE: Clutch noise
Yup, time to take the trany out. The sound is from one of the pressure plate fingers that's not the same height as the others, either due to one of the internal springs being broken or one finger being bent. Replace the clutch disc, pressure plate, and the release bearing while in there AND closely examine the release fork, which can also be bent or worn from the vibration of that issue.

Let us know how you make out.
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07-19-2016, 04:37 PM
Post: #3
RE: Clutch noise
(06-26-2016 12:36 PM)Rupe Wrote:  Yup, time to take the trany out. The sound is from one of the pressure plate fingers that's not the same height as the others, either due to one of the internal springs being broken or one finger being bent. Replace the clutch disc, pressure plate, and the release bearing while in there AND closely examine the release fork, which can also be bent or worn from the vibration of that issue.

Let us know how you make out.

Actually it turned out to be a worn crankshaft bearing that allowed too much play and after I got it to the shop it dropped into the balance shaft and locked the engine up.
Oil pan with extra parts
Oil pump assembly missing some parts
Balance shaft with an intruder
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07-19-2016, 06:12 PM
Post: #4
RE: Clutch noise
Wow! The last time I had the thrust bearing wear out was on an older Nissan 310 so near 30 years ago. In that case it was critical to measure the length of the clutch pushrod, which was available in different lengths. Too long and holding the clutch to the floor at traffic lights eventually wore out the thrust bearing on the crankshaft.

At any rate, someone did some good detective work. I never would have given that a second thought!
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07-19-2016, 08:11 PM
Post: #5
RE: Clutch noise
If it had locked up before I brought it in, they wouldn't have even looked for the cause, just recommended a new engine. It just happened that it locked up while they were driving it into the garage so they dropped the oil pan to look at the bottom.
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