I have been having issues with my F4 and turned to the site for help, this is by way of a thank you to all who responded with much helpful advice and help. I believe I am close to getting the problem sorted and without your help I may well have given up on a van that in reality is way too good for that. Thank you all it really is heartening to know that people are willing to give their time and efforts to help fellow owners. Too many of you to list but you know who you are. If I can ever return the favour I will. Happy motoring.