Probable broken door inside the dash. Have a mechanic check the ac system for trouble codes.
The heat shields on the Cherokee models are needed. The floor pans in the Cherokee models are thin and are penetrated by heat very easily. If you have driven one much, you will notice that the drivers and passengers front floor pans get quite warm from the engine heat. This is true with the muffler also. If it is not shielded the floor will get really hot and penetrate into the cab.
There are heater doors on the heat blower box that direct the path of the heat. Apparently the heater door to the floor vents is stuck closed.
Heat is coming from the engine.
The problem is in the controler. TAke it to the dealer. The problem is likely one of the 5 actuators under the dash. There is one for the passenger and one for the drivers side. When you move the temp setting, you should hear them moving. If not, one may need adjusting or replacing.
She is prob. in heat
clogged or damaged catalytic converter
my 2000 Chevy venture van the air comes hot by drivers vet and cool by passenger vents
heater core....
Do you have dual control thermostats?
Check your settings...the passenger and drive have TWO different temperature settings.
There is a good chance that the heater core has rusted out. This is a little radiator inside the passenger compartment for transferring heat from the engine coolant to the air in the cabin. Always fun to replace.
Water is leaking on passenger side floor board when heat is on
The actuator that controls the diverter door needs to be replaced.
Wet foot in driver area means leaking heater coil. The heater coil unit is usually at the center of the front of the passenger compartment, behind the dash and very close to the floor. Heated radiator water passes through this unit and your vent system and fan are used to force air across this to heat the air in the passenger area.
The heat shields on the Cherokee models are needed. The floor pans in the Cherokee models are thin and are penetrated by heat very easily. If you have driven one much, you will notice that the drivers and passengers front floor pans get quite warm from the engine heat. This is true with the muffler also. If it is not shielded the floor will get really hot and penetrate into the cab.
If a Dodge Ram Van is not getting any heat, the first sign of it being the fault of the heater core would be a very wet passenger side floor board. The heater core is located near the foot well on the passenger side.
There are heater doors on the heat blower box that direct the path of the heat. Apparently the heater door to the floor vents is stuck closed.