ukkat

Hi all, well im at my witts end, i ( the mrs ) has an 02 plated lupo 1.0 and for the past couple of weeks the engine has been pulsing when at idle. it intermitent but getting worse and today it has started to just fade and stop when pulling away. i dont have the funds to take it to a garage, ( and from previous experiense of being ripped off) can any of you knowledged people help and point me in the right direction engine pulese/ surges as if its just about to stall, then over reves all in a matter of seconds, at the lights it sounds likea boy racer is behind the wheel. Kat/ and the Mrs.