Chrysler Repair: 2001 t&c heater, zone heat, heater blower

Question
heater blower works temp gauge only moves a little no heat only cool air radiator is full thermostat is good this van has three zone heat&cool no heat at all

Answer
If your temp gauge does not go to the middle then there is a problem in the cooling system.A bad thermostat for one.Does it get warm when you accelerate? that would be low coolant.Did you replace the thermostat and not get all of the air out of the system.Are you sure you aren't leaking?Even though the gauge reads low,it can not read the temp if there isn't any liquid touching it.A common leak is in the lines to the rear heater right around the back of the passenger door.