The dealers could not find any fault causing the intermitent stalling on cold start up. They basically said they had no idea what could cause it :( (1.8T elegance)

I saw a faulty coolant sensor mentioned as giving a simillar fault on a Golf 1.8T, can anyone else back up this theory? anyone else had this?

Cheers.

could be the temp sensor or the turbo pipe do a search for fault code 17705

How often does the stalling happen on start up? I have a similar problem but is very intermittent. When turning the key, the revs fluctuate uncontrollably between 350-750 rpm, revving the engine doesnt help, it seems to stop after 30 seconds.

When turning the key, the revs fluctuate uncontrollably between 350-750 rpm, revving the engine doesnt help, it seems to stop after 30 seconds.

Could that be a dirty throttle body ?

As K said, usually rough running on start up etc can be attributed to the 17705 fault.

Boils down to one or two of..

Boost pipe

Dump Valve

Throttle body.