No misfire. I had a look at the throttle body and maf earlier and it all looks pretty clean, from what I could see in the idle control valve hole that’s pretty clean but I haven’t sprayed any cleaner in.
One thing that’s vaguely confusing me, it may be a red herring and I can’t find an answer on google, is that of the stepper motor fix articles I’ve looked at there is no washer on them. The original in my car had a metal washer and the Lucas a slightly thicker fibre one. Has anyone else got a washer on there’s, and if not could the additional distance out be a part of the prob?
Is this +8 new to you and this problem has been from when you first drove it or was it running OK and then started? If it was running OK and has now just started then the washer won't be the issue, my Stepper Motor has the fiber washer.
I am still leaning towards the Road Speed Sensor not working correctly.