hi guys this is realy bugging me and i do not no what it is i was driving down the road 2 days ago and everythink was fine and got back home and the car was idleing at 2700 rpm and holding the revs so i left it and yestoday i went to give it a run and started it and started to creep up the revs agen and holding its bugging me so much coz i do not no what it is i looked for pipes off or leaks didont see nuffink and i put a diffront ecu just to see and the same thing been look and cant see nuffink any ideas much appreciated thanks

 

is the throttle sticking open? check again for airleaks. could be a tiny split on one of the pipes

 

Vac leaks? Inlet manifold gaskets etc, check everything again.

 

Throttle cable could be jamming open - they can get quite dirty and oily over time and could just not be releasing properly.

Other than that check for leeks as mentioned by everyone else.