Thank you M W I system.
Hi Richard,
I thought when things weren't right with the BCV still boosting, limp home mode is usually weaker, right now with half a bar boost it is still quite peppy untill the RPM picks up. I thought that perhaps I should try the other wire

, I will check the voltages/pulsing as you say. In my youth a solenoid was just a coil of wire that was energised or not and cycling was something done on a bike!!! The sophistication of even basic cars today is astounding and makes me feel old. I can still remember when CIS was cutting edge, miss that Mk1 Sirrocco, lol.
So glad for the help.
I'll post more tomorrow and some pictures.
Cheers!