vRS doesn't like the cold

[tsr2]

Yesterday morning my vRS was idling very roughly just after starting it up.

This morning when I first tried to pull away there was very little power and it almost stalled. I had to stop and rev the engine to get it to settle down and run decently.

I'm surprised to see a modern engine that doesn't handle frosty weather adequately. Is this normal or is it another trip back to the dealers?

[VRStu]

It seems to come up often in the cold weather and is often caused by a split or damaged hose.

[tsr2]

It seems to come up often in the cold weather and is often caused by a split or damaged hose.

If it was a hose, wouldn't I notice the problem at other times, not just when the engine has been frozen overnight. Would the problem be cleared up by 30 seconds of revving the engine?

[VRStu]

It's a trend that seems to happen in the colder weather.

If you can get a VAG-COM scan doen that might help as there are other common things such as the water temperature sensor that can cause an issue and might be worth checking.

[mattbeef]

It might be the secondary air pump if it clears after 30 seconds.

TBH i never find it healthy driving straight away from a cold morning.

I always give mine a good 30 seconds before i set off

[tsr2]

It might be the secondary air pump if it clears after 30 seconds.

I think it was the revving that made the difference, rather than the time.

[martziniuk]

The secondary air pump is designed to warm the cat up quickly so the emmisions are kept low. I am not sure if this is timed or if it is on a temp basis.

[bjorn]

I always let the car idle for 30secs to a minute prior to setting off due to iffy running straight from cold.