My mum wants to sell her car but before she advertises it she wants it to be running sweet.

The only running problem it has is a hunting when started from cold, it doesnt happen all the time though, its been to a ford dealer and a couple of indepedant garages and she's been told theres nothing wrong with it

Basically it revs between tickover and 3k contantly and when slowing down this is obviously dangerous as it tries to run away with you!

Could it be some sensor of sorts? lambda or coolant temp sensor? need to sort it as shes seen a car she likes (at last )

Cheers for any help