Ed 30 High revs at start up?

[galaxie500]

My 75K mile Ed 30 is often exhibiting very high revs on & after start up which then settles back down to normal idle shortly afterwards. This seems to happen usually when the car is warm but it has occurred cold too. What should I check gents? It had a PCV last year and pretty sure the DV good. Is it a fuelling problem?
Thanks.
PR

[mvb12]

My 75K mile Ed 30 is often exhibiting very high revs on & after start up which then settles back down to normal idle shortly afterwards. This seems to happen usually when the car is warm but it has occurred cold too. What should I check gents? It had a PCV last year and pretty sure the DV good. Is it a fuelling problem?
Thanks.
PR

mine normally kicks off to around 1100/1200 on cold start and settles to around 800.

this is normal unless your revs are severely higher?

[galaxie500]

Thanks for your reply.  Annoyingly the revs shoot up to 2500 revs, which can't be good on a warm engine let alone one starting from cold.
Any other ideas?!
PR

[thomga01]

My GTi is doing exactly the same - did you get to the bottom of this?

[AJP]

Coolant temp sensor? Had those exact symptoms (albeit on a PD) so maybe it's a starting point.

Of course a better starting point would be a diagnostic scan, but you know that ;-)

[AJP]

Old thread resurrection fail

[thomga01]

Thanks for tip. Garage has done the scan - nothing reported. I will change the coolant sensor to see if it fixes it.