Hi,
My friends got a fiesta turbo and for around a week now its been running terrible, from start-up/idle the revs are fluctuating and its generally just coughing and spluttering,like its about to cut-out, when you drive it 1st/2nd/3rd gear are all the same but 4th/5th it seems to clear itself and runs fine.
Anybody had similar issues and ideas on how to rectify it?

Thanks
Chris