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Car Heaters
A car heater is a device used to heat the engine of a car, especially during cold weather. Commonly used in the northern US states, Canada or Scandinavia, the device warms up the car’s body and system for easier starting.
1,180 Questions
1991 accord lx your heater is blowing cold air no heat why?
The first thing to check is the heater control cable: has it come loose, or broken? On the engine side of the firewall, you will find the heater control valve. It's got heater hoses from the engine running into it, and it's got a lever with a pin sticking out the side of it. Ideally, there should be a cable attached to the pin. There's also a clip to hold the cable's sleeve. If the cable's not hooked up, which I fear is the case, start by going in your car and setting the heat to "high." IIRC the cable will be retracted all the way. If it is, lift the lever all the way up, push the clevis at the end of the cable over the pin, and make sure the cable is locked into the clip. If it's all the way out, push the lever all the way down before you reconnect the cable.
Your heater only blows cold on your corsa 1.7 diesel 51 plate anyone help you with this please?
try changing the pollen filter,it worked for me
Why is your heater blower not working?
Blown fuse.
Burned out blower speed resistor.
Faulty blower switch.
Bad blower motor.
Thermostat is stuck open, not allowing engine to reach operating temp. Replace the thermostat. could also be your heater core needs cleaning also check your rad cap to make sure that it holds the pressure
If your question is more "why" and not what to do: Your engine gets hot and needs to be cooled. To do this there are coolant passages throughout your engine and they connect to your radiator which uses outside air to dissipate the head from the coolant before returning back to the engine. Your water pump circulates the coolant through the system. Your thermostat is like a door that holds the coolant in the engine back until it's hot enough to go to the radiator to be cooled. If it is stuck open the coolant will be continually circulated through the radiator and continually cooled... it will not allow your engine to "warm up"... all it is doing is preventing your coolant from getting up to operating temperature when it's stuck open. the way your heat works is it has a heater core, a mini radiator, under your dashboard. it has coolant running through it and when you turn your heat on it blows air through this heater core. if your thermostat is stuck open then your coolant won't be allowed to get hot so it won't be hot when it goes through the heater core with the fan blowing through it.
Why does my 2002 Dodge Intrepid overheat and the heater blows only cold air?
the air conditioner is separate from your cooling system. intrepids are prone to overheating, and i think it is because the radiator is too small to properly vent heat.
AnswerCooling system should also be bled of air by the bleed screw on the water outlet located on the top of the motor.Air pockets are common.How do you replace the heater core in a 86 Lincoln mark 7?
You have to drop the steering column and pull the dash. Then after locating the heater core case below windshield you have to cut out a piece with a Dremel. After replacing the heater core you have fun putting everything back together..(use plastic weld to seal the case back up).in other words don't do it yourself it is a huge pain.
To go out about 5min. early and turn the car on and heater so that the car can be warm when you leave.
The systems AC system will run when the defrost is turn on.The manufactor does this to remove humity from the air making it easier to defrost the windsheild.The AC system should only run when the defrost is on though.If you are experiecing a high pressure promblem when the AC is running it is pronbly due to a overcharge of refrigerant.
Why does car heater only warm when driving but not when sitting still idling?
I'll bet it's your fan. I had this same problem in my car, and the fan was going bad. Have someone check it out. You can get a replacement fan from a junkyard pretty cheap if you want to save money. If not, call your local auto zone, or one of those stores and ask them to get one for you. They're not too expensive. You could take it to a community college that has mechanics classes and ask one of the students to install it for you at a discounted cost, or maybe in free if you supply the part. Best of luck, it's cold out.
How does electrolysis affect a radiator?
What is electrolysis and why is it a problem in an automotive cooling system? Lets start by trying to understand electrolysis as it pertains to automobiles. Electrolysis is a destructive force that packs enormous potential to damage not just cooling system components, but any aluminum engine part that has contact with the coolant. The coolant acts as both the catalyst and as the conductor, just like the electrolyte in a battery.The "electrodes" mentioned in the above definition are the aluminum components in the cooling system (like the plates in a battery). The "electrochemical process" mentioned is the aluminum particle (ion) movement, such that leaks (thinning of wall surface) occur. When enough ions have moved, this results in a failure (leak) typically in the radiator or heater due to the thickness (read thinness) of the tube wall surface. A thicker surface (like an aluminum casting) is not more resistant to electrolysis, but is not as likely to leak because it is thicker. However these thicker surfaces may leak anyway if the electrolysis occurs at a gasket surface. Generally you won't know you have an electrolysis problem unless you have (a series of) unexplained leaks. However, to add yet another factor, in some parts of the country (southwest), electrolysis is much more prevalent than others.
sounds like you need to replace the heater core (pretty large job) or at least time consuming...good luck
How can you tell if your car needs antifreeze?
If the temperature gauge rises quickly when you start your car, it probably needs antifreeze. Watch out when you fill the radiator. If antifreeze starts pouring from some random place under the engine, then your freeze plugs are probably shot. Cheap part to replace -- about $5. But the labor cost ... Ouch ...
Whats wrong with 2001 dodge Dakota heater ac only blow on high?
Could also be a short to ground. If it runs all the time that's what it probably is. Get a wiring diagram and figure it out
What is wrong with the heating unit if it only blows cold air?
if its a gas heating units then the ploit could be out, or the valve isn't opening up to allow gas into the burn tubes.
If its not allowing gas into the burner tubes, its possible the limits is trip, a flame sensor in front of the bruner tubes could be blow from flames shooting out of the tubes. Or the valve is bad.
If the unit is electic, it will contain 2 to 5 heating elements in it. a Squealor will turn on one element even 90 seconds until the temperature is meet, then it will reverse and start shutting off one element every 90 seconds.
Its is possible that the squealor have lost the 24 volts that is sent to it from the thermostats, or its coil could be bad.
Its possible that the fan fail to come on once, if so there are fuse link in each unit that work like fuses and they could be blow.
The heating coil could be brokem.
Most likely its is the squealor
A heater is able to blow warm air that heats a room because of?
it's because of heat transfer into convection .
How do you fix the heater in Mercury Sable - Ford Taurus?
No one knows if:
- The heater is NOT blowing - or blowing on high speed only, or...
- The heater IS blowing, but the air is NOT hot
Either way, the "Related Questions" below will get you started
Water pumps are belt driven pumps used to circulate engine coolant (50/50 water and antifreeze) through the engine, around the combustion chambers. Passages direct coolant near the intake and exhaust ports & spark plugs. As the engine reaches normal operating temperature, A thermostat opens and allows coolant to flow through the radiator, cooling the coolant, and then returning back to the engine. Tom
Why does the car thermostat show hot and no heat inside?
More than likely your low on coolant from a leak and there is not enough in the system to circulate to the heater core car is probably leaving a spot where you park check it out before it costs you a head gasket very expensive fix
How do you stop the heater line that goes in the intake manifold from leaking?
You will need to replace the quick disconnect fitting and it is best to use a steel one.
Your heater in your truck is blowing cold air what is the problem?
check to see if u have antifreeze in the radiator or reservoir
If the problem is climate control on both temperature extremes it maybe the "blending door" mechanism. Usually if the mechanism fails you can hear it "flip" around during moderate acceleration (noise will occur from below the radio in the air flow housing). Ford models around the 1999/2000 years used this design and many owners had problems develop. I am unsure but I believe that it is very difficult to repair in that the entire dash has to be removed from the vehicle in order to make repairs.
Common heater damper door indexing problem.
Our 2000 back up shop truck hot is cold and cold is hot on the controls.
Expensive to fix and usually requires a trip to the dealer
How long should a car heater take to warm up?
How long it takes a car heater to warm up depends on the temperature outside. In cold weather the heater can take several minutes to warm up.
Why would the car overheat but no hot air come from the heater?
You didnt say if the water pump was changed. No hot air means no circulation.
AnswerBrittany, You have 2 symptoms of a larger problem. It is like you said "I have a terrible headache and black eye." What happened was you missed the ball and it cracked you in the head.Anyways, Coolant is a fluid that keeps a car from getting too hot among other things. If there is low coolant the car will overheat. When the coolant ciculates through the engine it will also go through a thing in the dash that is like a small radiator called a heater core. A fan or blower move air through this part and pushes the hot air from the heater core into the passenger compartment. This heater core is usually the highest point of the coolant flow. Since fluid seeks it's lowest level, the heater core is the first to lose the hot coolant. Therefore your blower blows accross a cold heater core and gives you cold air.
If you don't have a leak, then when the thermostat was replaced, the coolant may have not been bled of the air in the system.
I would first fill the coolant and check for any leaks first. There is a common problem with the Buick centuries if you have a 3.1 motor. The intake manifold gasket is common for leaking.
In any event, don't run the engine if it goes into the red. Overheating can cause headgasket problems. See othe posts regarding this issue.
Let me know how you make out.
AnswerGlad to hear your problem was resolved.The heater core does not need to be removed to be checked. If the hose going into the heater core is hot and the one coming out is cold, the tells you it is retricted. Another way to verify is to remove the hoses going to the core, hook up one without installing into the car and run it. It should get hot-very hot, and then see how hot the hose is coming out of the core is like now.
AnswerIf this person that replaced the thermostat put it in backwards this could cause the car to overheat and the heater not to get hot. EzForJesus AnswerSimple - It is low on radiator fluid (water or anit-freeze).Why does the heater on your 2000 Hyundai Lantra only blow out air when you go over a bump?
You have a loose connection. So when you hit a bump the connection makes contact, turning on the blower.
