I've had this for 4.5 years and put 30K on it: new diff, clutch and shocks replaced, regularly change oil and keep it well maintained. It has always run hot with the gauge at @ 1/2. First time using the heat in months the other day, and it's blowing cold air regardless of setting. Someone said it might be the thermostat but that doesn't make sense, because in my past experience with no heat the thermostat was stuck open and they usually ran cool too, but the gauge is still at the half-way point.
Also, looking up thermostats I see just the regular metal unit that I have always seen and one that's plastic and like a full housing where the thermostat sits inside, and not sure if the housing one would be what I need.
Does anyone have an experience with an issue like this or know what the problem could be?
TIA for your help!