Shudder/vibration noise at low revs when cold? G6ET

[karlp2]

G6ET... 109ks on the clock, cars only had an entry level tune and has always been regularly servived.  When driving it cold at about 50km/h if I slightly increase the acceleration I can briefly hear and feel a shudder and vibration.  I can't pinpoint it but suspect it's coming from either the diff or gearbox.  It goes in for a service tomorrow and I wouldn't mind your thoughts on what it might be?   I'm hoping it's not the auto slipping.  It only does it when cold and at low revs - like around 1400rpm

 

Thanks for your help.  

Edited 06/08/16 11:36 PM by karlp2

[EvilDaifu]

Just wondering when this started happening?  Was it after you had the tune?  That might help some others to give their considered opinion.

[discostig]

Ever had the ZF fluid and filter changed?

 

I get shudder in mine if it's the first few minutes of the day and I load it up too much but it's no longer a stock box - different clutch pack materials and different oil (Transmax Z).  Oh and it cops 50% more power than stock fairly regularly.

 

 

[Lewis]

I have the same problem on my ute so it's probably not the rear end as they are different.

I was wondering about the universal joints?

lewis

[karlp2]

7 hours ago, EvilDaifu said:

Just wondering when this started happening?  Was it after you had the tune?  That might help some others to give their considered opinion.

It's been tuned for about a year, I've only just noticed the issue, thanks

[Lewis]

has the vibration issue gone for you Karlp2?

if so, could you let me know what it was as I still have the issue.

Lewis

[Gsexxy]

My g6e turbo is having the same issue, found any suggestions? 

Have new Gibson heavy duty drive shaft and unis fitted but noise is still there and only while driveline is cold...

[MBAF]

Checked your engine and transmission mounts?

[Gsexxy]

Yeah they seem fine, it sounds more like a grinding vibration, like something is not meshing properly which I guess if there were slop in either  mounts itcould cause the noise 🤔

Once car is all warmed up it completely goes