I just got myself an escort combi van with an rs turbo engine in it.

What happens is the car can struggle to start then when it does start it pretty much dies instantly.
I can rev the car to keep it alive but when it drops down to idle again it just cuts out.

Ive had a quick look at the vacuum lines and seem to be ok.

One thing i did notice though and this might not even matter but when the car heated up to the N of norm it idled fine??

Any ideas?
Cheers