Guys. My coolant temp gauge stays at the 120 degree mark for several minutes without moving after idling for several minutes. As a matter of fact, I can drive several miles before the needle begins to move off the 120 mark. Outside temp around 50.degrees. At first I thought the thermostat was stuck open so I just replaced it. Same issue. Could it be the temp sensor? Most sensors I've seen either works or they don't. The gauge will eventually start to climb up to maybe 160 indicated but it definitely takes way longer than it used to. I haven't checked the fans but I don't think they're running at cold start-up and I don't think that would matter anyway if the thermostat is closed. Next, I'll check the coolant temp indicated on a scanner tool and compare to the gauge. Any other ideas? The gauge sensor is right above the thermostat, correct? Thanks!