VF SV6 rough idle. De-stressing exhaust ???

[Ron Burgundy]

Is it really rough idle or just vibration from the exhaust ?

 

[Vf Lightning]

Is it really rough idle or just vibration from the exhaust ?

I'd say it's like a shudder through the car when at idle. It's moderate but is worse when I turn on the aircon.

 

[Ron Burgundy]

I'd say it's like a shudder through the car when at idle. It's moderate but is worse when I turn on the aircon.

I suspect it is vibration rather than rough idle..especially if you can visually see it like you mentioned. This happens when the pipes are not perfect shape and they get bolted on under tension/stress...
Have a look at all rubber mounts and see if they are really stretched etc...

 

[Vf Lightning]

I suspect it is vibration rather than rough idle..especially if you can visually see it like you mentioned. This happens when the pipes are not perfect shape and they get bolted on under tension/stress...
Have a look at all rubber mounts and see if they are really stretched etc...

Yea checked all rubbers etc. Seems to be intermittent. Took it for a 5 minute drive stopped 5-10 times and nothing running spot on. Pulled into my driveway and it started again. Giving me the shits.

 

[Vf Lightning]

Yea checked all rubbers etc. Seems to be intermittent. Took it for a 5 minute drive stopped 5-10 times and nothing running spot on. Pulled into my driveway and it started again. Giving me the shits.

 

[Vf Lightning]

Yea checked all rubbers etc. Seems to be intermittent. Took it for a 5 minute drive stopped 5-10 times and nothing running spot on. Pulled into my driveway and it started again. Giving me the shits.

Would you say holden are right ? That the exhaust needs to be loosened off and re-tensioned. I forgot to mention I'm not getting any fault codes coming up.

 

[Milo 6.0]

Check the rear muffler exhaust hangers,the 2 bits of steel rod on the mufflers that go through the rear exhaust rubbers can be a bit long and touch the body.

 

[BlackVXGTS]

I can understand why Holden dealers wouldn't be interested in your exhaust problem, given you have changed the standard system. You can hardly expect them to be helpful.

Nowadays it seems to be called "Exhaust System Alignment" rather than de-stressing. Don't understand your model, but check out the attached from the VF Service Manual. It may be of some benefit to you:

 

[Vf Lightning]

I can understand why Holden dealers wouldn't be interested in your exhaust problem, given you have changed the standard system. You can hardly expect them to be helpful.

Nowadays it seems to be called "Exhaust System Alignment" rather than de-stressing. Don't understand your model, but check out the attached from the VF Service Manual. It may be of some benefit to you:

Good info. Thanks for that.

 

[Vf Lightning]

Check the rear muffler exhaust hangers,the 2 bits of steel rod on the mufflers that go through the rear exhaust rubbers can be a bit long and touch the body.

Checked mate all clear.