After the engine is warm up and hot - feel the water hoses to the heater and test if they are HOT- HOT. NO?- The water valve may not be letting hot water go to the heater core.
it's leaking coolant. Needs to be replaced.
heater core plugged or air locked check to see if hoses going to heater core are hot
needs heater core replaced wost likely be hind the glove box
The heater core is usually your last resort. So now start from the end to the beginning, core, thermostat, flush, hose, fluids. Follow the trail and your bound to find your answer.
The heater valve may not be engaging or the heater core may be blocked.
Sounds like the heater core may be plugged up or the heater damper door is broken. See "Related Questions" below for more
thermostat probably stuck open needs to be checked or replaced
What do you mean by "has no heat"? No air blowing out, blowing out cold air when heater is on, blowing nothing at all? Heater not turning on? What specifically is happening?
No one knows if:The heater is NOT blowing - or blowing on high speed only, or... The heater IS blowing, but the air is NOT hotEither way, the "Related Questions" below will get you started
Dodges are good for blowing fuses. If that is not it, the fan switch might need replaced.
sounds like the thermostat is sticking
either the fuse that was put has too much wattage or not enough