thanks for the replys He cleaned both the throttle body and idle air valve but it made no difference. he did say there was no resistance in the valve but he was unsure if it was ment to be like that on this model. when i started it up this morning the revs went up to 3000rpm again. i popped the bonet and unplugged the cable on the idle control valve and the revs dropped down and it struggled to run at adle but it allowed me to take it to a friend of my dad who has the diagnostic stuff, he is going to look at it in the week and let my know for sure what it is. will post up what it was when i get it back