My poor little 845tl is still overheating at speed, it's absolutely fine stop starting round town and driving country roads up to 90kmh, but when I go above 90 it seems to overheat really quickly. It's not a head gasket failure, that's been checked but I was thinking it could be an air leak. A quick WD40 check seems to give the all clear but it might make sense if it was only leaking at high engine speeds. My other thought was a possible waterpump fault, rusted impeller perhaps, seems smooth enough so I don't think the bearing has gone. Anyone had anything like this?
Thanks
Dave
Thanks
Dave