Juddering boost

[dancuz]

Hi all,

In short; low revs and high load = juddery boost delivery. Once it gets to higher revs its fine. Initial thoughts are N75 a little dodgy? Definitely not missing so doubt it's coil pack or spark related. Anyone else experienced this?

Haven't got access to vcds but will invest in a cable now as a priority.

Cheers,

Dan

 

[rustynlc]

Sounds like a problem I'm having chucked it on vcds and it came up with faulty lambda sensor, replaced sensor with genuine audi part and it still juddereds under acceleration occasionally yet no fault codes??

 

[dancuz]

I replaced lambda sensors in march, had new coil packs about 18 months ago, new plugs in feb.... Still haven't bought vcds though so haven't got any closer....

 

[aragorn]

I've had this three times on different cars.

First time, it was a split hose off the inlet manifold.

Second time it was a bad coil pack.

Third time it was a bad coil pack.