Hi Noel and Paul,
I have found the earth strap !!!!!!
It was attached, but came off at the block with just a VERY light pull. I suspect it was hanging on by a thread of wire, which explains a lot. For those that need to know it is located off the front & end of the gearbox near the bottom, and connects to the chassis under the battery compartment, and is extremely hard to see (my defence) let alone get at, so my new one will be going on where it is not exposed to the elements and debris off the road.
While I'm at it I intend to give the
a good clean as well as the Air Temperature Sensor, which is absolutely caked in
, road film, and God knows what else. Hopefully that will take care of the high revs.
With a bit of luck I shall be able to cancel my appointment with the diagnostic machine.
Will let you know how it goes as clearly this is not uncommon.