Over the last few days there are occasions when the car won't go over 1500rpm when setting off in 1st gear.

I've noticed it tends to happen on relatively cold start when i first get moving but it has happened part way through a journey aswell. I try to put my foot down but the needle dosn't move nor is there any power to the wheels (don't think I can hear the engine revs increasing either). I slip it into 2nd and all is ok. Even if I use 1st gear immediately after, it works fine.

Havn't had a chance to plug VAG COM in yet.

Must also point out that the weekend before last (2nd Sept) I was part way through fitting cruise control myself (unfinished project). There is a certain connection that I have left unplugged (was previously plugged in). It is a black plug and in the Control Box under the wiper motor. I believ this shouldn't affect it as it's only used for CruiseControl (I believe). If this was the problem then it wouldn't be intermittent would it. Would either work or not at all.

Any pointers folks?

Thanks in advance