BMW 840ci 1995 Fluctuating temp gauge!
Hi guys, my temp gauge rises occasionally when im driving. It never goes near the red and always returns to centre position after a few minutes. Now before you start with any ideas i should add that the radiator, rad cap, water pump, thermostat, viscous fan etc have all been changed! I have even skimmed the cylinder heads and has all new gaskets everywhere! The system has been bled also. Iam a member of the UK Forum and we are out of ideas there! My local garage and local BMW Specialist cannot diagnose the fault either. There are no fault codes when plugged into the computer. During the summer here it seemed to behave but now the temperature has fallen with winter coming in the gauge is playing up again. If anyone has any ideas on this then i would be extremely grateful as i now feel like selling the car even though i love my 8 series! She is not losing any water either! Many thanks, Peter