C30 Gearbox : - D5 Judder at 2kRPM 6th Gear

D5C30 · Aug 14th, 2014, 16:30

Hi guys,

My (new to me) C30 gets a judder on the motorway at 2k rpm in 6th. It's only there from 2000 - 2200 rpm and only in 6th, the power is still there and smooths out after that and is fine before. It feels like torque steer but you can feel it through most of the car.

Does anyone have any ideas?

Proghound · Aug 15th, 2014, 14:22

Do you get the same thing at 70-75mph in any other gears? i.e. could it be wheel-related rather than engine/transmission? Just thinking, that sort of speed is prime territory for tracking/tyre balance issues.

D5C30 · Aug 15th, 2014, 16:05

Quote:

Originally Posted by Proghound

Do you get the same thing at 70-75mph in any other gears? i.e. could it be wheel-related rather than engine/transmission? Just thinking, that sort of speed is prime territory for tracking/tyre balance issues.

You notice it most in 6th, 5th does it ever so slightly but not as noticeable. Maybe I'll get the tracking checked.

dme123 · Aug 20th, 2014, 12:13

That does sound like a front wheel balance issue to me, if it's making the steering wheel wobble in your hands. If you feel it through the body of the car then it may be rear wheel balance.

SonyVaio · Aug 23rd, 2014, 19:46

Quote:

Originally Posted by D5C30

Hi guys,

My (new to me) C30 gets a judder on the motorway at 2k rpm in 6th. It's only there from 2000 - 2200 rpm and only in 6th, the power is still there and smooths out after that and is fine before. It feels like torque steer but you can feel it through most of the car.

Does anyone have any ideas?

This sounds like it is EGR valve related.

D5C30 · Aug 31st, 2014, 13:39

Thanks for all the replies, turns out the front two alloys are buckled and the back two were out of balance by 15 grams and 65 grams. Time for a refurb I think.

Aug 14th, 2014, 16:30	#1
D5C30 New Member Last Online: Feb 23rd, 2015 16:04 Join Date: Aug 2014 Location: Manchester	D5 Judder at 2kRPM 6th Gear Hi guys, My (new to me) C30 gets a judder on the motorway at 2k rpm in 6th. It's only there from 2000 - 2200 rpm and only in 6th, the power is still there and smooths out after that and is fine before. It feels like torque steer but you can feel it through most of the car. Does anyone have any ideas? __________________ 2010 C30 D5 R Design Polestar

Aug 15th, 2014, 14:22	#2
Proghound Volvo and Audi owner Last Online: Apr 26th, 2024 16:00 Join Date: Dec 2012 Location: Leighton Buzzard	Do you get the same thing at 70-75mph in any other gears? i.e. could it be wheel-related rather than engine/transmission? Just thinking, that sort of speed is prime territory for tracking/tyre balance issues. __________________ Current: 2012 C70 D3 SE Lux Solstice Geartronic, Caspian Blue. Also: 2002 Audi A2 TDI SE, Crystal Blue Previous: 2008 C70 D5 SE manual, Flint Grey.

Aug 31st, 2014, 13:39	#6
D5C30 New Member Last Online: Feb 23rd, 2015 16:04 Join Date: Aug 2014 Location: Manchester	Thanks for all the replies, turns out the front two alloys are buckled and the back two were out of balance by 15 grams and 65 grams. Time for a refurb I think. __________________ 2010 C30 D5 R Design Polestar

Aug 20th, 2014, 12:13	#4
dme123 Master Member Last Online: Jan 17th, 2023 10:06 Join Date: Aug 2011 Location: Cardiff	That does sound like a front wheel balance issue to me, if it's making the steering wheel wobble in your hands. If you feel it through the body of the car then it may be rear wheel balance.

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)