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VW MKIV-A4 TDIs (VE and PD) This is a general discussion about A4/MkIV Jetta (99.5-~2005), Golf(99.5-2006), and New Beetle(98-2006). Both VE and PD engines are covered here.

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Old July 6th, 2014, 22:05   #1
dilkie
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Join Date: Aug 2008
Location: Ottawa
Default Rattle at low rpm and clutch pedal vibration

Okay,

This one has me stumped.

2006 Golf BEW engine. 160Km.

This started about a month ago when I was in Florida and at the time I thought it was bad fuel, but I don't believe it is any more.

When accelerating, through the low rpm's (up to ~1.5K) there is a lot of vibration. If you put your foot lightly on the clutch pedal you can feel it, and it also is there if you let off on the throttle. You can also feel it in the throttle but far less than the clutch.

If the engine is cold, there is no accompanying sound, but once the engine warms up, there is a "rattle" on deceleration only as the engine passes through ~900 rpm.

When idling, when clutch out in neutral, there is a clatter/rattle that comes and goes. With the clutch depressed, in neutral, it is much more noticeable. Blipping the throttle brings out the rattle as the engine passes below 1000 rpm on the way to idle.

No power loss, no fuel economy loss.

I can get a recording of the sound if anyone wants.. It's got me stumped.

Things that I can think of, clutch, release bearing, flywheel?

Or maybe something engine related like cam or pistons falling off Oh, if I turn off the engine while decelerating in gear, the pedal vibration is still there.

Ideas?

-lee
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Old July 7th, 2014, 10:24   #2
Jettascuba
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Probably another DMF failure.
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Old July 7th, 2014, 10:25   #3
dilkie
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Okay, got onto youtube and listened to some DMF posts and that is what I am hearing. So it "sounds" like I have a DMF failure in the works.

Question, how bad is this? Should I park the car until it's fixed or can I drive it?
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Old July 7th, 2014, 10:26   #4
dilkie
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BTW, this post sounds like what I have

http://www.youtube.com/watch?v=7vUVy69xRT0

especially when he gets under the car.
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Old July 8th, 2014, 02:28   #5
Jettascuba
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You can probably drive it. Worst failure I had on a client's car was that the flywheel failed and prevented the engine from turning. Did read of worse ones though - pieces coming through bell housing...
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