Engine getting hotter than it should get...
Reply #2 –
My digital gage has always held steady at 4 bars even in 100 degree heat idling in traffic. So you definitely have an issue. I would buy a cheap buttstuffog temp gage and hook it up just for diagnostics. That way you can see if it's a actual cooling system problem or just the sending unit for your digital gage...
That's pretty much what I did when my (digital) oil pressure gage started acting erratically.