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Perhaps a bad thermostat and/or a heater core
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∙ 14y ago
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Whywill a 93 Jeep Grand Cherokee Heater Motor not shut off?
1. heat control linkage disconnected or broken or vacuum source problems(low vaccum source or broken vacuum lines) 2. heater unit doors stuck or non functioning heater door actuators
What would cause heat not to come out of vents when set to floor and vents?
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.
Why is Hot heat coming out the floor vent when the heater is off?
Heat is coming from the engine.
Why would antifreeze leak from the exterior driverside firewall 2002 Mazda mpv?
Because your Vehicle's heater derives heat from hot coolant that is cycled out of the engine block. Basically, a coolant line is routed from the engine, through the firewall, and through radiating fins in front of the blower motor's output. The heat that comes out of your car's heater is actually heat energy absorbed from the engine block into the coolant, and then the heat energy is absorbed from the coolant when it goes through the *heater core* (radiating fins) and absorbed through the radiating fins and heats the air that is pushed through by the blower motor (resulting in hot air). The coolant after it goes through the radiating fins of your car's heater core is then pumped back through the firewall and to the radiator where it is cooled much more. The coincidence is that when you go to your vehicle on a 45 degree or colder day, and start the engine, turn on the heater, and it blows cold air: it's because your car's engine hasn't warmed up yet. Once it idles for 20 minutes, or 10 minutes of driving, the heater is crispy hot and feels good. One of the coolant lines going through the firewall has a leak.... STOPLEAK might fix it. STOPLEAK also likes to freeze up old thermostats, so be careful. Do you mean the leak occurr outside the vehicle, not inside? Are you sure it's not just the condensate from the AC from the drain tube? if it's antifreeze, then you have a leak. The lines for the rear heater are notorious for rusting out.
Why would antifreeze leak out of the heat ducts?
The heater core is cracked. You may also be smelling a sweet sort of smell when you turn on the heat and the car is running hot. That sweet smell comes from the anitfreeze when it burns. I have a 1998 ford Expedition and I smell antifreeze inside the truck. also antifreeze leaking around the passenger side of motor outside..... I can see a mist coming out of the ac vents.... could it be bad heater core and is it easy to fix or do you have step by step removal/installation instructions? please help Your heater core is probably cracked. There is alot of work to get to the core. You have to remove the front dash board.
If you bypass heater core will engine stop overheating?
no , the heater core provides heat to the interior for the passengers
Which works faster immersion heater or hotplate and why?
immersion heater because heat is sent directly to the object and it heats faster
The heat goes out when the car over heats?
the reason that the heat would cease to work when the car overheats is that the car is low on coolant. coolant is warmed by the engine as it transfers heat away from the engine. the heated coolant passes through heater hose and through the heater core. The blower motor blows air through the heater core warming the air and pushes the warm air through the vents in the car to you. the heater core is a small radiator in the dashboard of most vehicles. If there isn't coolant in the car, the engine becomes too hot thus the overheating. a side effect of this is that the lack of coolant means that coolant cannot get to the heater core to be warmed to warm you
Why does the heat not work in a 2004 Chrysler Pacifica?
replace heater relay and or heater blower motor
Breeze no heat and overheating what causes this?
No heat coming from the heater and the car overheating is usually the thermostat stuck closed. The thermostat is supposed to open up at a certain temperature allowing the engine to warm up quickly.
A hot water heater heats water at the bottom but has hot water on top because of heat transfer by?
Convection
A heater is able to blow warm air that heats a room because of?
it's because of heat transfer into convection .
What does a heater core do?
A heater core in a vehicle takes some of the heat from the coolant and runs it through a heat exchanger. The blower in the car that blows hot air into your car runs through that heat exchanger which heats the air that enters your car.
What does a heater use to heat air?
In an automobile the heated engine coolant heats the air. <><><><> In the case of a heater used in a building, it may burn fuel, such as kerosene or propane, or it may generate heat from electrical current.
Does a car heater use freon to heat?
The heater is like a small radiator(heater core) usually located in the dash. The fan blows air through it and heats the car. There are two heater hoses that carry coolant to & from the heater core.
Why does the heater only work when you are driving?
Because the heater pulls the heat off of the motor and uses fans to circulate it to you
Does my car's heater has a fuse?
The car heater is a vague question. The heater core is not fused, it is like a mini radiator. The blower motor for heat/AC is fused. The selector blower motor resistor is fused in line with blower motor. Now if you lost heat, the water pump is belt driven, not fused.
