VIBRATION WHEN ACCELERATING

[GT4MOTION]

Starting to notice heavy vibration when I accelerate. Doesnt matter what gear. As soon as revs hit between 2-3000 vibration is bad. Car is 05 Golf GTTDI 4motion. Is it likely to be DMF?

[charlestdci]

I had this on my 06 A3 quattro. The haldex system includes a rubber doughnut in the prop shaft, which should gave a degree of movement and act as a balancer. The rubber hardens though, meaning it cannot move as intended. Audi main dealers only offer a fix by replacing the entire prop shaft for ££££s. The noise/vibration is quit annoying, occurring as it does in the power band.

[charlestdci]

Further info: http://www.audi-sport.net/xf/threads/a3-2-0-170-td...

[GT4MOTION]

Been out today having a look. Seems there is a mount almost gone. It is below propshaft at the front. Mate thinks you call it a stabiliser mount? Could it be that?

[GT4MOTION]

Just been looking. Does he mean the dogbone mount? Where can I get this part?

[charlestdci]

For early models, it was a case of replacing the entire prop shaft I believe. Not sure when things became more flexible, but it was after '06 in the case of the A3. Might be worth speaking to your local VW dealer as it's a known issue.

[orangio]

I had the same problem on my S$ and it was a worn driveshaft joint, this was replaced and it now drives perfect.

[SuperchargedVR6]

GT4MOTION said:

Just been looking. Does he mean the dogbone mount? Where can I get this part?

Yep. A common weakness on MK4, MK5 and MK6! Not sure about MK7, but VW have always been ste with engine mounts. They make them too soft and the snap torque delivery and equally snappy throttle closure kills them off pretty quickly. If you feel a very noticeable jolt coming off the throttle at low speeds, it's almost certainly engine mount related.

Vibratechnics do a nice uprated dogbone which doesn't ruin the cabin refinement, otherwise you could just go for a dealer replacement and be changing it again a year later.