1993 Jeep Grand Cherokee "heater change vent defrost" Questions

defrost position, the a/c or heater completely stops blowing as if its been turned to off and doesnt blow through vents! It doesnt even sound like the ac is still on. And when in ac mode and turned to

heater area The "blender" would refer to the blend actuators that change the flow of air from floor to vent to defrost or combinations. Properly working blend doors will allow you to direct air to the

...the windshield won't defrost? There is plenty of air coming out the front middle defrost vent but no change in the foggy glass? Thanks in advance for any thoughts or advice. check your heater ...

Heater selector won't change from defrost to any other settings like floor heat or straight from the dash . the switch on the dash moves but the heat only comes from the defrost vents in the dashboard

...be related? We looked inside the dash and there is vacumn suction to the main wire going to the heater control switch but the individual ones on each of the positions don't appear to be getting ...

Heater vent controls I cannot change the middle switch from defrost to dash settings. Did the problem come on suddenly or was some previous action or work done......

...vents on my 94 jeep grand cherokee. I can change it from defrost to floor but thats it Doesnt matter if its ac or heat you have a vacum line lose under the dash for the heater or the switch is ...

...change the thermostat and did a heater core flush but it didn't seem to help much. What else might it be ? Thanks ....Bruce Peters might be the damper door stuck..are you getting full air flow thru ...

...change it? It is a rather involved job to replace the heater core. Here is a link showing how to replace ...

change from heat to defrost there is 3 blend door motors on a jeep,and the dash has to be pulled Go to autozone.com. Register your vehicle with them. Look up heater control switch in repair link. They