it`s only cost 10 quid for an idle valve, and £20 for the air flow sensor...both new aswell, so not too bad

i have tried spraying stuff all around the inlet to see if it changed revs etc, nope..

also i did take the battery off before then went out for a bit, thrashed it a few times, nearly got 60 mph in 2nd gear in a 1.0 micra..fook me..ha..poor thing..

also it did seem to settle down on the revs, but leaving it now till the morning to see if it starts reving up and down..

pissing cars...

thanks guys for all the suggestions and help, micra site i joined was useless..