Hi guys.
Happy new year.
My 2006 RS4 developed a juddering/kangarooing after initial cold start a couple of months back.
I recently had it serviced at a specialists near cambridge where they carried out a 45k service. New plugs, filters etc.
I thought this may have cured the problem but it seems not. the problem goes after about 5 mins once the engine has warmed up.
Has anyone experienced this problem in the past? What is the solution?
thanks
Simon
Juddering/kangarooing for first 5 mins?
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- 1st Gear
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Juddering/kangarooing for first 5 mins?
Audi RS4 Cab 2006
Daytona Grey
Daytona Grey
Re: Juddering/kangarooing for first 5 mins?
mine does it but i have stage 2 inlet manifold with removed flaps, this makes the throttle jumpy, maybe you have sticky flaps 

Re: Juddering/kangarooing for first 5 mins?
What software version are you running. SW0090 aimed to reduce jerkiness on startup - partly by running a higher idle for a short while
2007 Daytona RS4 Avant
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- 4th Gear
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Re: Juddering/kangarooing for first 5 mins?
seems to be common on these cars , mine did it before i fitted the supercharger fitted and it still does it a little even with a full custom map
Phantom black saloon ,PES M112 Supercharged 520ps/595nm K&N filter, 100 cell milltek cats,res valved milltek system. 8 and 10mm H&R spacers.H&R roll bars, "smoke chrome " alloy refurb. JHM Quickshifter, Bilstein B16 coilovers , uprated diff mount ,50/50 devils own WM kit so 1.4 litres/min in intake approx 10% more power and torque
1/4 mile 12.01 secs 123.5mph
1/4 mile 12.01 secs 123.5mph
- PetrolDave
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- Joined: Mon Nov 07, 2005 11:28 am
- Location: Southampton, Hampshire UK
Re: Juddering/kangarooing for first 5 mins?
+1Dom81 wrote:What software version are you running. SW0090 aimed to reduce jerkiness on startup - partly by running a higher idle for a short while
I had jerky running for the first mile or so after a cold start when I had SW 0080, getting it updated to SW0090 has solved the problem.
My MRC remap has got rid of the very fast initial idle that came with SW0090.
Gone: 2006 B7 RS4 Avant (Phantom Black)
Re: Juddering/kangarooing for first 5 mins?
I bought my car in Jan this year and have exactly the same problem - particularly on light throttle opening. It's not quite as bad now that the mornings are warmer but it is a bit annoying.
For those who've had the upgrade to SW0090, do you reckon it's worth it or is the fast idle just as annoying as the jerkiness?
For those who've had the upgrade to SW0090, do you reckon it's worth it or is the fast idle just as annoying as the jerkiness?
B5 RS4 MTM Stage 1 - Gone and much missed
C5 RS6 MTM Stage 1- Gone, missed, but not as much as the RS4
B8 S4 MTM Stage 1 (410hp, 380 ft lb) - Gone and missed
C7 A6 Allroad BiTDI MTM (380hp, 575 ft lb, YES 575 ft lb!) - Current family wagon: 0-60 in 4.9 sec and nearly 50 mpg at a steady motorway chug. That's having your cake and eating it!
B7 RS4 Avant
C5 RS6 MTM Stage 1- Gone, missed, but not as much as the RS4
B8 S4 MTM Stage 1 (410hp, 380 ft lb) - Gone and missed
C7 A6 Allroad BiTDI MTM (380hp, 575 ft lb, YES 575 ft lb!) - Current family wagon: 0-60 in 4.9 sec and nearly 50 mpg at a steady motorway chug. That's having your cake and eating it!
B7 RS4 Avant
- PetrolDave
- Cruising
- Posts: 7599
- Joined: Mon Nov 07, 2005 11:28 am
- Location: Southampton, Hampshire UK
Re: Juddering/kangarooing for first 5 mins?
I did the 0080 to 0090 upgrade about 4 years ago, and don't regret doing it - yes the fast idle is a bit of a pain but for me the jerkiness was more annoying.NickB wrote:For those who've had the upgrade to SW0090, do you reckon it's worth it or is the fast idle just as annoying as the jerkiness?
Gone: 2006 B7 RS4 Avant (Phantom Black)
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