Questions & Answers for: heater stuck max hot air

Heater stuck on max hot after batt replacement Hi. I have a 2004 Chev Silv. Extra Cab. Just replaced my battery yesterday. Following installation of new battery, regardless of dual-side temp settings,

...heater matrix, one door is stuck...you can try getting into the car without cranking the car,turn the key to phase two,cut the heater all the way up and the blower unit..let it run wide open for 20 ...

...ac shoots out hot air. i changed the heater control valve and no improvements have occurred. thanks It is probably the door mixture motor. Check to see if it is stuck or the motor is burned

it is blowing hot aitr like the heater is on. The pressure switch is stuck open, You can try unplugging it for a few minutes with the ac turned on to reset it,If that doesn't work it may need replaced

...heater core, stuck thermostat, or air in the cooling system can all cause a car's heater to blow cold.9 Jul 2017When Your Car Heater Blows Cold Air - ...

...heater core with vehicle running and coolant tempature about half on guage.       If both hoses are hot and coolant in radiator/overflow bottle is full then hot cold ...

...It just seems to be not as HOT as it use to be. Any ideas?? How is the engine temp? Thermostat may be stuck open or inlet heater hose may be restricted. The temp mode or blend door may be sticking

heater casing might be stuck , bad control cable. see hvac section in FSM from JEEP. or here. alldata.com here is the logic flow (test for this failure) 1: engine really hot, i use a pyro IR gun, 2: i

heater core that is malfunctioning. you could have air trapped in the anti-freeze system, a stuck lever that switches from cold to hot, a stuck open thermostat that not letting the water heat up. This

a bad blend door that is stuck on the heater side. Could be a bad actuator or something that is jamming the door keeping from changing. Some actuators are vacuum operated so check for bad vacuum lines