ok here we go been playing with multimeter reading values on sensors
underside to right above manifold is a sensor relating to carb i think idle control or iac its called unsure but that sensor is reading 0.00 ohms
im assuming this is the sensor thats at fault was reading it should be round 9 ohms to clarify this is attached to carb and is a twat to get to on the underside

im giving it a service as said during course of this week coming so is that the possible cause if so is this the fault that ive been reading about on forums relating to over revving etc