"Clunk" in A6
Thread Starter
Team Owner
Joined: Jan 2007
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From: In the woods looking for my thrown putter.
St. Jude Donor '13, '15
"Clunk" in A6
When shifting from reverse to drive or drive to reverse while stopped there seems to be a pronounced "clunk". This "clunk" is not like dropping a cinderblock onto the concrete but it is definately there. Almost seems like there is a lot of play in the drive shaft or something. Maybe bad u-joint? I have had other cars where the shift from drive to reverse or vice versa is not even noticable. This one definately is. Even from park to reverse there is some slack and a clunk. Anyone else with an A6 notice this??
Melting Slicks
Joined: Oct 2006
Posts: 2,905
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I think it may just be the shaft changing sides of the u-joint, going from reverse to drive, so it could be a little loose or maybe a tranny mount. I hear a slight one, but it's been there since mile one and hasn't gotten worse, so I figure it's good.
Thread Starter
Team Owner
Joined: Jan 2007
Posts: 22,136
Likes: 23
From: In the woods looking for my thrown putter.
St. Jude Donor '13, '15
Mine has as well, so I'm thinking it's normal, just wanted to see if anyone else experienced it. Now that I think about it, it is the shaft chanking sides of the u-joint, but the play seems a little excessive to me.
Melting Slicks
Joined: Oct 2006
Posts: 2,905
Likes: 1
The slack is probally why some higher HP M6s get failure in the shaft. In an A6, we can take the slack out by flashing the rpms a bit before launch. The A4 in my 547rwhp 2000 TA had the same slack, but never broke the joint or shaft due to taking the slack out during staging. I've seen more than one manual tear it all to 'ell by dropping the clutch at launch. If you've owned other rwd GMs, they probally had the same issue, but more sound deadening so you didn't notice it.
Thread Starter
Team Owner
Joined: Jan 2007
Posts: 22,136
Likes: 23
From: In the woods looking for my thrown putter.
St. Jude Donor '13, '15
The slack is probally why some higher HP M6s get failure in the shaft. In an A6, we can take the slack out by flashing the rpms a bit before launch. The A4 in my 547rwhp 2000 TA had the same slack, but never broke the joint or shaft due to taking the slack out during staging. I've seen more than one manual tear it all to 'ell by dropping the clutch at launch. If you've owned other rwd GMs, they probally had the same issue, but more sound deadening so you didn't notice it.
I'm pretty picky about my car, so I'm sure it's normal. I hear noises others probably don't. 
Thanks for your help.
