Nissan Micra K12 - idle problem - groucho

I've been having a real problem with the idle on my 53
plate micra. It started as a minor thing when if i was
sitting waiting in traffic you could feel the engine speed
dip. Over the space of a few weeks it got a lot worse where
eventually i had to keep the revs up in order for it not to
stall. I decided to take it into a local garage where i was
told it was a problem with the drive chain. Anyhow £500
later the problem still exists but only when the engine is
cold on start up. Once the engine has warmed it runs
without any problem. Any help out there

Nissan Micra K12 - idle problem - micra2003

hiya mate did you get the problem fixed what was it?