Please close question.
The revs bounce up and down and varies from aprox. 9,000 revs to 10,000 revs.
Then the engine may run smooth for a short while then the problem starts again. The problem period is now lasting longer and longer.
After following your instructions, it was the engine management light that flashed and not the spanner key in this model.
The code it gave was 1625 and no other codes. I hope this helps with your diagnosis.
I will get this checked out by a local mechanic and will get back to you as soon as possible.