Thanks for that. I've now had diagnosis done and there were four faults on initial readout of which one (the most serious and most expensive of course) re-occurred after the computer was reset.
It appears that the Throttle Valve Potentiometer will need replacing - so a few bucks to be spent...
Car was working fine until yesterday. On the return leg of a 35 mile round trip there was a sudden loss of power and speed.
Now car starts fine and seems to be ok but after a couple of minutes the ignition warning light comes on and the power drops. The immobiliser warning light does not come...
