Rough Idle

[Dgb]

Hi I hope someone can help as I am at my tollerance level. I have a very basic understanding of cars but I have a 2002 PEUGEOT 206 COUPE CABRIOLET SE (1997cc PETROL, 2 Door CONVERTIBLE and it is giving me some issues. When cold it runs very badly. It fails to idle and lacks power. Often I get a cat converter fault or antipolution fault and it goes into limp mode. I have got a cheap OBII reader and it comes up with a P0300 warning or a random misfire. I have been to a number of mechanics and have had all sparkplugs changes, a new coil rack and all new injectors. But no change. When the car warms up the issue is lessoned bit there is still a bit of a roighness to the idle. Can anyone suggest what I can do next.

Any help or advice would be great
Thanks

[IanL]

The best advice is to get it diagnosed with the specific tool Peugeot Planet 2000.

However, it does occur to me that, if the ignition is on the blink and you've changed the obvious bits, the items still left to try are the crankshaft and camshaft position sensors, which govern the timing.

[GrandadMonkey]

Is it being run on cheap supermarket fuel?

[gazza82]

What makes of plugs and coilpack? There is one combination that sucks ...