Hi all, Yesterday i changed the thermostat on my 1.9 cdti 120 veccy (71k) on clock. I changed it because the enginge temp never read above 75 on the gauge and i was told normal was 85. It only ever read 75 even after the engine was warmed up say even after driving it for an hour. But changed the thermostat and still it wont read higher lol still sits at 75. So question is, is this normal or do i have a fault somewere else?