I am pretty sure its the gauge or the sensor. I could be wrong so Im just asking for advice. This is whats been going on. Ever since I got the bike the previouse owner did say that the temp gauge didnt seem to work properly. I just thought it can be fixed later if its just the gauge. At the time the gauge would only stay at at C (cold end and have about 4mm arc of movement. When its near its top of the arc I would find that the seat also gets hot. On hot days I would complain my bike was trying to cook my balls.... About 1000ks after that I took it for the first service(Since the bike been with me). I told the mechanic what was going on and he checked it. He told me after the service he told me had to change the coolant as the old stuff was all mud.... He also looked at the temp gauge he said changing the coolant might solve the problem as before there were very little cerculation in the coolant system. I found that after changing the coolant the heated seats went away. It never got hot again(even on a stinking hot day). I found the temp gauge to work a bit better but its still not showing right. It would only come up to the bottom end of the white arc after a hard ride and the fan would turn on. At the moment the temp gauge is moving only about 6mm though insted of 30mm or so. I think its the gauge. If the gauge how much would it cost(the gauge)? Im thinking not much. If it costs abit I might just put a digital gauge on insted as I am electronicly able to do that. Does anyone know as in how the temogauge takes reading though? As in resistors? Anyone has ideas???