Thanks
Many thanks for the prompt reply & diag.
I am going to modify it so that if the fan is running at the time of engin switch off the fan will continue to run for a few minutes.
Despite all the cooling system checks out OK & holds pressure OK when hot, mine runs vey close to overheating when switched off on a hot day.
PS the left hand side of the image sent is clipped, I have all the info I need but if theres anything worthwhile on the LHS and its not a hastle I would appreciate it.
I am heading off on hols so wont be logged on again for a couple of weeks.
Again thanks for the help/