Hi again all
The cav has been in for the alternator today but like anyones nightmare, Vauxhall phoned up and said that was the least of my worries!!
It seems to be running on 3 cylinders( NO 2 is low.)I asked him his advice and he said it would be a major engine stripdown. The car was misfiring before the alternator was repaired and now and again it would sound slightly mettallic under the rocker cover. Also, the tappets were getting gradually worse coming up to this point.
Can anyone shed a bit of light on this please.