I have a very similar problem with my X reg Rover 25, also 1.4i 16v. The engine lost power a few weeks ago and it revs at 1500-2000 at idle instead of the normal 850. It is really annoying and the garages I went to don't really have a clue. One garage suggested to change the exhast as 'it might be clogged and the exhaust fumes cannot fully discharge' ???!!! Any ideas before I fork out hundreds on (perhaps) unnecesary new exhaust ???
AXG
September 2008