In the end it might be ECU related, you need to turn to actronics as well. No idea if they have a representation or similar in the UK.
By coincidence experiencing vibrating windows on shutting?? Outside temperature related at about 8 degree Celsius? Have your PCV cleaned. Don't feed her euro98, worsens problems. Sit down and evaluate upcoming costs into this car and go shop around. Forget emotional aspects. Petrol is very expensive now . You might come to 100 reasons to search for new wheels. Took me a while, but were a 100.