Hi Christo. The probe is before the turbo, I think between 2 and 3 cylinders. It always moved very rapidly up and down and I was able once to get it just below 600c going flat out up a hill. However, I cant compare apples with apples as I have never watched the temperature changes on another Patrol. Perhaps I can get feedback here as to how rapidly the temperature should change. With mine, if you traveled at a constant speed, say about 80, and then suddenly accelerated, the temp used to move up at an alarming rate until it reached the high 400 c and then would slow down and slowly creep up to the mid 500c. Would that be normal?
Have Troll, will travel.