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Check to see if the coolant level is low. If you have a leak in the system and the level drops low enough your heater can't do it's thing.
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∙ 16y ago
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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.
How do you know which heater core you need to replace on a 94 ford aerostar front or rear you have heat but no defrost and stream comes out of the vents when heat is on?
Front heater core is in the dash, the rear heater core is all the way in the back of the vehicle. If you have steam coming out of the dash vents, the front HC is leaking. If you have steam coming out of the rear heater vents, then the rear core is leaking.
Does low coolant level in radiator affect the heat output in winter?
Yes. The heater core provides the heat which blows out your vents. The heater core has engine coolant flowing through it (it is like a mini radiator) which creates the heat which warms the air that comes out your vents. If you have low coolant, there may be no coolant circulating through heater core, thus causing cold air to blow out vents.
What is the purpose of the vent on a gas furnance?
Well first of all.. You want heat in your house when it's cold, RIGHT? So you turn on the heater with the knob.. and the heat comes out of the vents. No vents = explosion. And basically.. no vents as I said.. explosion, because the gas has nowhere to go so the pressure will build up and BOOM.. flames.
Your heate rcore is hot but no heat comes out of vents?
Check the vent operation. Check that both heater pipes (water) into and out of the heater core are hot, if only one is hot then normally the core is blocked and will need renewing
Why is it that when I turned off the heat in my car it started leaking mass amounts of antifreeze outside of the car and smoke and condensation started coming out of the vents?
u need to replace the heater core in your car
Why does heat blow out the vents when the heater is turned off?
Air still in the vents or freshly-shut coils still contain heat for a short amount of time after turning off the power. Also, it could take a short amount of time for the fans blowing the air to slow down, even after cutting power.
What is wrong and what should be done if a car emits white smoke from the air vents even if AC and heat are turned off?
Heater core needs to be checked May need to be changed or cleaned answer heater core is bad, replace with a new one
On your 1996 240 Nissan heat will not come through all vents inside?
The heater blower may not be working properly. Without the heater blower working, the air will not come through the vents.
On Kia Sedona what is the HTH RR switch for?
It is for the rear heater. Press the button and this will enable heat to come out rear heater vents.
How come Heat comes out vents when heater turned on instead of floor 1990 sub2500?
You have a vaccum leak that keeps the heater door from opening. Some of the vehicles have a vaccum control module under the dash that sometimes goes bad. This is what happened to my Dodge Ram. Check with a dealer in their parts department and they can tell you if this could be the problem. They should have a diagram showing where its at. Good luck.
When my Jeeps heat is turned off for a few minutes then turned on it gives heat but then disepates to cold What is going on?
new heater
