Why does my car heater keep blowing cold air?

There are many reasons your car’s heater isn’t working. Maybe the fan is malfunctioning. Perhaps your temperature gauge is running below normal. There could even be a puddle of liquid under the front of the vehicle. A lack of heat can be a symptom of a much larger problem. You could soon be facing failing parts or even a blown engine.

Where is the blower resistor on a 1988 Chevy?

The blower motor resistor (located on top of the heater core housing and behind the glove box) isn’t hard to test. In this tutorial I’ll show you how to continuity test it with a multimeter in Ohms mode ( Ω ). NOTE: This tutorial only applies to the 1988 to 1993 vehicles listed in the ‘Applies To:’ box on the right column.

How to find a Chevy Blazer near me?

No exact matches found For better results, try removing filters, or using the sorting menu. Includes $5,234 in cash and discounts. WINDY CHEVROLET INC. Includes $5,014 in cash and discounts. Includes $4,327 in cash and discounts. Includes $3,948 in cash and discounts. Includes $4,325 in cash and discounts. Includes $4,514 in cash and discounts.

What to do if your heater is blowing cold air?

Coolant level: If your coolant level is low, your heater core may not be getting enough warmed coolant through it to produce adequate heat. Solution: Top up the coolant and see if it helps. If the level is low due to a leak, track down the source and get it repaired.

Why does my engine temp go up after a warmup?

Engine temp rises to 240+ after warmup while in idle and while driving. Heater only blows out cold air. Changed thermostat but no change. Maybe there’s a blockage in your heater hose?

What causes hot engine but no heat from heater?

When the engine is warm feel both heater hoses. If one is cool and one is hot then you have an obstructed heater core (or a bad heater core valve, if it has one. some vehicles use a mechanical valve to turn the coolant flow on and off to the heater core).

What causes an air lock in a hot water heater?

Air lock: An air lock is a large air bubble that forms in your cooling system as the result of a coolant leak or a recent coolant top-up. An air lock prevents the coolant from circulating properly and can cut your heat output. Solution: Set the heater to its maximum setting, remove the coolant tank cap and fill it to the proper level.

What to do if your car heater is not working?

Solution: Set the heater to its maximum setting, remove the coolant tank cap and fill it to the proper level. Start the engine with cap still open and let the engine idle for a few minutes. If the coolant level should drop as the thermostat opens, top it up as necessary.

There could be various reasons for car heater not working but it basically happens for two reasons: air from the blower is not blow toward the heater core or the coolant does not flow through the heater core. Several underlying causes are there for which the coolant and the air do not go through their designated paths.

Why does my Toyota Corolla blower stop working?

I HAVE A 1984 TOYOTA LANDCRUISER WAGON. LATLY THE A/C VENTS HAVE SLOWLY QUIT BLOWING THE SAME AMOUNT OF AIR AS THEY USED TO. THE HIGHER THE RPM THE LESS THEY BLOW. A/C IS STILL DECENTLY COLD BUT NOT A … read more When I get into my 2001 Toyota Corolla and start the motor and turn on the A/C nothing happens.

Where is the blower motor on a Toyota Yaris?

Hi, Ok, it will be either a faulty blower motor or blower motor resistor, as either can cause no blower motor function and equally likely to fail. Both are located behind the passenger side of the dash, but easy to access: The blower motor is 0.3 hr to replace, about $30, and the blower motor is about $120 for the part. Total is about $150

Why is my Toyota Prius not blowing air?

My 2010 Toyota Prius is suddenly not blowing any air…hot or cold. The screen shows the fan levels, temperature, etc. but no air is coming from … read more Vocational, Technical or Tra…

If any of the engine cooling system components are damaged, this will cause the car to overheat. The following are some possible problems that may occur with the engine cooling system: If the heater is blowing cold air and the car is overheating, it is likely that the problem is related to the engine cooling system as well.

What to do when your car heater won’t turn on?

If your system has a bleed port or bleed screw, and you can find it, you can fix this air lock yourself. Run the engine until the fan kicks in. Once your fan has come on, look around the radiator for a bleed port or bleed screw. This is something that can be turned with a screwdriver.

Why is the Vauxhall Corsa heater blowing out cold air?

The problem with the heater on the Vauxhall Corsa (as well as the Renault Clio) is often that there is no power from the heaters at all. This issue has nothing to do with cold air coming out instead of heat. This loss of power is also a common issue on the Renault Clio. Or you may have a dirty fan that is stuck.

What happens if your car radiator is too hot?

If the engine is too hot, the thermostat will open to allow the flow of coolant into the radiator. The radiator will then cool it down before it is pumped back through the engine block by the water pump.

What to do when your car heater is blowing cold air?

Start the engine with cap still open and let the engine idle for a few minutes. If the coolant level should drop as the thermostat opens, top it up as necessary. This should bleed off the air bubble. When the engine is fully warmed up, put the cap back on and take a drive to see if the heat output has returned.

What causes a heater to blow cold air?

The following are some issues that may be causing the heater to blow cold air: Low coolant levels. A plugged/clogged heater core. A faulty thermostat (thermostat that is stuck) Broken blower and/or blower motor. Heater core bypass hoses that have leaks.

Why do I not get heat from my car heater?

That’s why you won’t get heat until the car has been running for a couple of minutes. As the engine gets hotter, so does the coolant. Because we rely on the coolant system to provide us with heat through our heaters, there are now a few components that can fail and mean that you’ll never get heat out of your car heaters.

Why does my car fan keep blowing cold air?

Engine fan: Most vehicles today have a thermostatically controlled electric fan that comes on when additional engine cooling is necessary. A defective thermostatic switch could make the fan run continuously, reducing the coolant temperature to the point where you can’t get enough heat into the interior.

Why is my blower motor not coming on?

With the back wire hooked up I ran a jumper directly to the battery pos and attached it the purple wire terminal on the motor. The motor did not come on. So either my motor is dead shorted or something has gummed up the brushes or they are worn out.

Where is the mode actuator on a 1995 GMC c1500?

This 1995 GMC C1500 came in with the complaint that the air would blow from everywhere except the front vents. In using the controls, the air flow would adjust from the defrost to the floor. All other functions were okay as well. The mode actuator is located under the driver’s side of the dash, above the gas pedal.

If the thermostat can’t signal to the car that the engine is warm, the coolant won’t be sent over to provide heat to your heater core and the air will stay cool. Thermostats are a relatively easy and inexpensive fix, so installing a new one can get your heater working again quickly. The last common problem with car heaters is a water leak.

What should I do if my truck heater is not working?

This can lead to clogs or loose clamps. If you’re struggling to find a coolant leak, these hoses should be one of the places you check. You should always replace old coolant hoses, along with any other hoses, when you notice any wear or leaks. How Much Does It Cost to Repair My Truck’s Heater?

Why is no air coming out of my heater?

The heater core may also leak coolant. The heater core is clogged from debris in the cooling system. If debris has caused a clog in the heater core, it will need to be replaced. A faulty blower motor. You’ll know this is the problem if no air comes out of the vents when you turn on the heater.

How does a heater work in a truck?

As you drive your truck, the engine gets warm. This heats the coolant, and the cooling system has to circulate it through the radiator to bring the temperature back down. When you turn on your heater, the coolant flows through the heater core inside your dashboard. This allows the hot air to blow through your vents and heat up your cabin.

Can a car heater go wrong in the winter?

Unreliable car heaters can make the cold winter months practically unbearable. Several things can potentially go wrong with automotive heaters because, much like a home heating system, there are many components working together to heat your car.

What should I do if my car heater is not working?

A little test you can do is leave the can running, stationary at home and take a look at your temperature gauge that should be in your dash. Once you see it get to the middle turn on your heaters and see if you’re getting heat. If you are getting heat, your thermostat needs changing.

Why does my car heater keep losing water?

An engine that keeps losing water is a big problem, and not just because low water levels will keep your heater from putting out enough heat. A car that is not getting coolant will heat up and damage itself permanently. If it leaks water, you need to find the source.

Why is my Chevy Aveo air conditioner not working?

Actual prices may change depending on final diagnosis. Chevrolet Aveo Heater Is Not Working Repair Symptoms. When the blower motor fails, the air conditioner and heater may still work, and heat or cool may be felt at the vents, but the air pressure will be dramatically decreased.

What happens when the blower fails on a Chevy Equinox?

When the blower motor fails, the air conditioner and heater may still work, and heat or cool may be felt at the vents, but the air pressure will be dramatically decreased. This Read More When the heater control valve fails, adjusting the temperature may not change the air temperature at the vents, whether hot or cold.

Why does my Acura heater smell like engine coolant?

A failing heater core may cause the car’s interior to smell like engine coolant. The smell will become worse when the heater is turned on. The engine may also begin to run hotte…

Can a car heater be unreliable in the winter?

Why does my car feel cool for a few minutes?

It can feel cool for the first few minutes because the engine has to warm up in order for the coolant to heat up and provide heat to your interior. If cool air continues to blow out, the first thing you should check is your coolant level. When your car is low on coolant, it won’t be able to send any to the heater core to create warm air.

What would be causing no heat in the car?

Low Coolant level
Air in the system
Stuck open thermostat
Partially blocked heater core
Faulty heater valve

Why does my car blow out cold air and no heat?

Until the engine warms up, there’s no heat for the heater core to extract. It’s also the reason that a plugged heater core, stuck thermostat, or air in the cooling system can all cause a car’s heater to blow cold.

What causes no heat or air conditioning in a car?

If one or more of these issues is present, your vehicle may blow out cool air rather than heat: Not enough coolant in the engine Problems with the heater core Clogged or broken heating controls Dysfunctional thermostats Water leaks

Why is my car’s heater not working?

– Low coolant – A blockage in the heater core – A stuck blend door – A stuck heater valve – A bad switch or linkage

Why does my Dodge Dakota blower keep going bad?

If you leave the blower motor switched continually on you may not notice this. If so I suspect that there is an earth fault on one of the wires connected to either pin 4 or 5 of the resistor. Here is a the blower circuit for a 2002 Dodge Dakota. Hopefully it is the same for your particular year model.

Why does my GM blower motor resistor keep failing?

In some cases, the heat is so high that it melts the connector. This is common on late model GM vehicles. If you discover a melted connector, do NOT attempt repair. Purchase an upgraded pigtail and splice it into the harness along with a new blower motor resistor.

If your car is overheating and/or your heater is not working, it should be inspected and diagnosed as soon as possible to avoid causing damage to the engine and the inconvenience of operating the car under this condition. The statements expressed above are only for informational purposes and should be independently verified.

Why is my car heater not blowing warm air?

If your car is not blowing warm air into the cabin and the coolant level is fine, then you could have an issue with your heater core. If you suspect that something is amiss with your car’s heater core, watch for these signs:

If your system has a bleed port or bleed screw, and you can find it, you can fix this air lock yourself. Run the engine until the fan kicks in. Once your fan has come on, look around the radiator for a bleed port or bleed screw. This is something that can be turned with a screwdriver.

Why does my car heat up in the winter?

Reason #1: Not Enough Coolant. Your car uses coolant – usually made up of 50% antifreeze and 50% water – to cool your engine down, especially during the hot months of summer. During the winter when you crank up your heat, the coolant is brought over from the engine to the heater core that then blows warm air into your car.

Unreliable car heaters can make the cold winter months practically unbearable. Several things can potentially go wrong with automotive heaters because, much like a home heating system, there are many components working together to heat your car. If one or more of these issues is present, your vehicle may blow out cool air rather than heat:

Why does my Furnace go cold when I turn it on?

When your furnace blows cold air, try turning the heating unit off and on. If the air feels warm for a moment or two, then switches to cold, it may be that the flame sensor is dirty. With a dirty flame sensor, your gas burner won’t stay lit, causing the air to go cold soon after the furnace turns on.

Where does the heater blow hot air from?

Q: Heater blows hot air from drivers side and cold air from passenger side of car on 2012 Dodge Avenger. Why?? Heater blows hot air from drivers side and cold air from passenger side of car on 2012 Dodge Avenger.

Why does my car heater blow cold air instead of hot?

If your car heater blows cold air instead of hot air it might stuck vent or plugged up heater core. In order to make sure that the heater is warm we will use OBD scanner to read the real time coolant temperature.

Q: Heater blows hot air from drivers side and cold air from passenger side of car on 2012 Dodge Avenger. Why?? Heater blows hot air from drivers side and cold air from passenger side of car on 2012 Dodge Avenger.

What kind of car blows hot air on one side?

CAR BLOWS HOT AIR ON ONE SIDE COLD ON THE OTHER SIDE. HEATER PROBLEMS DODGE, JEEP, CHRYSLER, RAM – YouTube

What does cold air mean in Dodge car?

Cold air includes passenger vents, defrost and floor. Ive taken it to dodge and they flushed my coolant which did nothing. They ran diagnostics and said all the dampers and everything are operating as they should.

Unreliable car heaters can make the cold winter months practically unbearable. Several things can potentially go wrong with automotive heaters because, much like a home heating system, there are many components working together to heat your car.

Can a faulty thermostat cause a car to not feel warm?

A faulty thermostat will affect the proper flow of water and can cause issues with the heating system. The heater control value isn’t working. This valve opens to allow the water to flow into the heater core. If the heater control valve is the culprit, the air coming into your vehicle won’t feel warm.

It can feel cool for the first few minutes because the engine has to warm up in order for the coolant to heat up and provide heat to your interior. If cool air continues to blow out, the first thing you should check is your coolant level. When your car is low on coolant, it won’t be able to send any to the heater core to create warm air.

Why does my car heater take so long to heat up?

Time how long it takes the engine to warm up enough to produce heat when the heater is turned on. If it takes more than five minutes for the heater to produce heat, it is a sign that the thermostat is stuck open, allowing all the coolant to flow all the time.

What causes a car’s radiator to overheat?

The radiator will then cool it down before it is pumped back through the engine block by the water pump. If any of the engine cooling system components are damaged, this will cause the car to overheat. The following are some possible problems that may occur with the engine cooling system:

What happens to the coolant when the engine is too hot?

The rest of the hot coolant is regulated by the thermostat, which maintains a consistent engine temperature that does not rise above or fall below the engine’s normal operating temperature. If the engine is too hot, the thermostat will open to allow the flow of coolant into the radiator.

What to do if your car heater is overheating?

If you are interested in a transmission overhaul, or installation of a new (dealer supplied) or professionally rebuilt transmission, YourMechanic professionals in certain locales can assist with that. Please simply inquire based on your locale.

If any of the engine cooling system components are damaged, this will cause the car to overheat. The following are some possible problems that may occur with the engine cooling system: If the heater is blowing cold air and the car is overheating, it is likely that the problem is related to the engine cooling system as well.

The radiator will then cool it down before it is pumped back through the engine block by the water pump. If any of the engine cooling system components are damaged, this will cause the car to overheat. The following are some possible problems that may occur with the engine cooling system:

The rest of the hot coolant is regulated by the thermostat, which maintains a consistent engine temperature that does not rise above or fall below the engine’s normal operating temperature. If the engine is too hot, the thermostat will open to allow the flow of coolant into the radiator.

If you are interested in a transmission overhaul, or installation of a new (dealer supplied) or professionally rebuilt transmission, YourMechanic professionals in certain locales can assist with that. Please simply inquire based on your locale.

Why is there no heat coming out of my engine?

If you have enough coolant, it could possibly be your thermostat that is causing the problem. Whether or not water circulates around your engine is determined by the thermostat. If the thermostat is broken or stuck, it will not allow the water to flow – meaning there will be no heat.

Why does my car heater not turn on?

If the thermostat is broken or stuck, it will not allow the water to flow – meaning there will be no heat. If both of these are working properly, your heater controls could be broken or clogged. Watch this 3-minute video for advice from award winning mechanic Scotty Kilmer on how to help resolve this issue: Could you possibly have a water leak?

Why does my hot water heater not last long?

If the nice warm heat doesn’t last very long, this is because you’re drawing the heat away from the circulated water. Check your temp gauge again and if starts to fall whilst you have the heaters on, the thermostat is broken. They’re cheap and your neighbouring handyman can fit one.

Why does my air conditioner fan run all the time?

A defective thermostatic switch could make the fan run continuously, reducing the coolant temperature to the point where you can’t get enough heat into the interior. If the fan runs all the time, including from a cold start, you might have this problem. Solution: Getting the thermostatic switch replaced should resolve the problem.

What causes condensation on the inside of a van?

Add these activities to the increasing temperature of your living space, and the air will quickly become warmer and more humid. When there is a large temperature difference between the cold outdoors, and a warm humid van interior, condensation will form on the cold surfaces.

Why does my car overheat when I Turn on the heat?

Shianne, Turning the heat on removes heat from your coolant by blowing air through your heater core into the cabin of your vehicle. Your car is most likely overheating due to a low coolant level or a problem with your engine’s cooling fans. There are other problems that may cause overheating, but they are much rarer.

Why does my air conditioner not get cold?

When the freon later expands, it gets very cold. Air blown across metal filled with cold freon causes the air to cool quickly. If your compressor isn’t working, the air won’t get cold. And your compressor might not be working because of low freon levels, an electrical problem, or an overheated engine.

When the engine is warm feel both heater hoses. If one is cool and one is hot then you have an obstructed heater core (or a bad heater core valve, if it has one. some vehicles use a mechanical valve to turn the coolant flow on and off to the heater core).

Engine temp rises to 240+ after warmup while in idle and while driving. Heater only blows out cold air. Changed thermostat but no change. Maybe there’s a blockage in your heater hose?

Why does my air conditioner keep blowing cold air?

Heater valves: These valves control the heat output of the heater core. They can be mechanical or vacuum-operated (like a rotary knob that you turn) or electronic (in electronic climate control systems with specific temperature settings). A valve that is stuck in the closed position will prevent heat from entering the cabin.

If one of the heater hoses (there are 2 of them, approx 1 inch in diameter) going from the engine to the firewall right underneath the windshield is hot when the engine is warmed up but the other hose is still cold or maybe only luke warm then the heater core is plugged up and needs to be replaced. Good Luck, Kenny/MrBlueOval

What should I do if my heater is blowing cold air?

Check the radiator, it’s probably bone-dry. if not, then check the heater core as it might be plugged up.

Can a blown fuse cause a blower fan not to work?

Solution: This can be as simple as a blown fuse, it could be a wiring issue, or the blower fan could need replacement. You can check to see if the fuse is blown and replace it, but your mechanic will likely need to intervene if it’s more complicated than that.

If one of the heater hoses (there are 2 of them, approx 1 inch in diameter) going from the engine to the firewall right underneath the windshield is hot when the engine is warmed up but the other hose is still cold or maybe only luke warm then the heater core is plugged up and needs to be replaced. Good Luck, Kenny/MrBlueOval

Check the radiator, it’s probably bone-dry. if not, then check the heater core as it might be plugged up.

What to do if your car does not blow out hot air?

First and foremost, check the coolant level. If there is not enough coolant, it will not blow out hot air at all. You can lift the hood and look for a large clear tank with a cap and the words “max” and “min” on it. Check to see if it is full enough.

A faulty thermostat will affect the proper flow of water and can cause issues with the heating system. The heater control value isn’t working. This valve opens to allow the water to flow into the heater core. If the heater control valve is the culprit, the air coming into your vehicle won’t feel warm.

Why would a car heater blow cool air?

One of the most common causes of a car heater blowing cold air is from low coolant. As stated before, coolant is what warms the heater core – if the coolant is low, there may not be enough heat transfer from the heater core to the air to heat the passenger compartment.

Why is my car overheating in the winter?

Overheating occurs in winter due to a deficiency that occurs in a vehicle’s cooling system. Most common faults are coolant leaks or a blocked thermostat. Coolant passes through the engine’s coolant passages, as it does the heat that is produced by friction and combustion in to the engine and it is transferred in to the coolant.

When your car heater blows cold air?
- Problems with the engine’s thermostat. The thermostat works as a valve to control the coolant flow to the radiator.
- Low coolant level. The coolant fluid is the source of heat supporting the heating system.
- Air bubbles in the cooling system.
- Issues with the heater core.
- Issues with the heater controls.
  
  What causes your car heater to blow cold air?
  
  Why does my car heater blow cold air?
  
  When Your Car Heater Blows Cold Air Quick Crash Course in Car Heater Operation. First off, everything here applies to vehicles with water-cooled engines. Car Heater Blowing Cold Due to Cooling System Issue. Stuck thermostat. Stuck Thermostats. Air in the Cooling System. Plugged Heater Core. Coolant Not Flowing Through the Heater Core. Other Reasons a Car Heater Can Blow Cold.
  
  Why is my heater blowing cold air?
  
  A heater blowing cold air could be a result of a leak in your ducting. Over time, the changing temperatures wear on all sorts of things and your ductwork is no exception. Your ducts are usually in the attic and outside of your insulation, exposing them to the bitter cold.
  
  Squeeze the top radiator hose to help air pump around the system (taking care to avoid any moving parts, in particular the radiator fan, which could come on suddenly without warning). Between the engine heat and the water pump, all the air should be forced from the system.
  
  Squeeze the top radiator hose to help air pump around the system (taking care to avoid any moving parts, in particular the radiator fan, which could come on suddenly without warning). Between the engine heat and the water pump, all the air should be forced from the system.
  
  What happens when your Ford Taurus heater stops working?
  
  At this point, the blower motor blows air across the it and the newly heated air blows on to the driver and passengers. If the heater has stopped working in your Taurus, this process has failed in one way or another.
  
  Why is the heater not working on my Ford Escape?
  
  If the neither hose has any heat, you may have air in the cooling system, low fluid, or low pressure. If you look at your temperature gauge, and the engine is running hotter than normal, but there is not heat coming from the heater you may be having issues with the water pump.
  
  Why is the water heater in my car not working?
  
  The most common culprit for your heaters not working is a faulty thermostat. These clever yet very simple and cheap contraptions regulate the water circulation on initial startup. They’re easy to purchase and simple to replace if you have a little mechanical knowledge.
  
  Why is my Ford Taurus heater not working?
  
  This weekend I replaced the thermostat and checked the coolant level and the heater still won’t blow hot air. When the blower is running after the car warms up it blows cool air. When you accelerate while driving the air gets a little warmer but not much and cools down completely when you are back at idle.
  
  What does it mean when your car heater is not working?
  
  Sometimes the fan is still blowing but the air isn’t warm anymore. There’s nothing worse than driving through a rainstorm on a cold day and having to pump chilly defroster air onto the top of your head because your heat isn’t working! Other times the fan isn’t blowing at all, but you can feel heat creep out of the vents.
  
  Why is my climate control not working on my Taurus?
  
  Answer: It really sounds like the vacuum lines which control your air ducts under the dash may have developed a leak. The fact that it heats up a little when you accelerate is very telling. You should check under the hood and notice a vacuum hose routing diagram which will tell you where the source of the climate control hose is.
  
  Can a hot air heater get plugged by incorrect coolant?
  
  2: Can get plugged by the incorrect coolant (should be yellow, or almost clear. If green, incorrect coolant) Also check your coolant bottle for signs of oil. If none, flush coolant system. Also, simply takes a few small pieces of metal flake from the block to plug.
  
  Can a hot air heater blow cold air?
  
  Yes, when you stop revving it up it goes back cold. Yes, it seems to be consistant. It blows hot under load then under idle it feels cold, noticeably cooler than when it is under load. I went to the same valve. When I press it in or pull it out I could not feel any difference at idle.
  
  Solution: This can be as simple as a blown fuse, it could be a wiring issue, or the blower fan could need replacement. You can check to see if the fuse is blown and replace it, but your mechanic will likely need to intervene if it’s more complicated than that.
  
  There could be various reasons for car heater not working but it basically happens for two reasons: air from the blower is not blow toward the heater core or the coolant does not flow through the heater core. Several underlying causes are there for which the coolant and the air do not go through their designated paths.
  
  The easiest way is to let your car warm up and turn the heat to MAX. If there is no heat blowing inside of the car – and if only one of the hoses is warm, it means that there is no flow through the heater core. This can also be caused by a faulty heater control valve, though.
  
  Why does my car have no heat in the cabin?
  
  Here are some of the reasons why your car cabin has no heat. 1. Not Enough Coolant Water in the Car The most common problem when you do not have any heat in the cabin is actually a low level of coolant. Open your hood and check the coolant level (When the engine is cold).
  
  What should I do if I have no heat in my car?
  
  Thus the first thing you should do, if you have no heat, is to see if there is in fact enough coolant in your engine. You can do this by lifting the bonnet (the hood) and looking at the header tank, which collects overflow coolant from the radiator. This is a large tank, usually clear plastic,…
  
  Why is the heater in my car blowing out cold air and not?
  
  The problem with the heater on the Vauxhall Corsa (as well as the Renault Clio) is often that there is no power from the heaters at all. This issue has nothing to do with cold air coming out instead of heat. This loss of power is also a common issue on the Renault Clio.
  
  Thus the first thing you should do, if you have no heat, is to see if there is in fact enough coolant in your engine. You can do this by lifting the bonnet (the hood) and looking at the header tank, which collects overflow coolant from the radiator. This is a large tank, usually clear plastic,…
  
  The problem with the heater on the Vauxhall Corsa (as well as the Renault Clio) is often that there is no power from the heaters at all. This issue has nothing to do with cold air coming out instead of heat. This loss of power is also a common issue on the Renault Clio. Or you may have a dirty fan that is stuck.
  
  What do you need to have a heater in your car?
  
  To have heat, you need: enough water in your engine; a working thermostat, a working heater and heater controls a cooling system that doesn’t leak.
  
  Solution: Set the heater to its maximum setting, remove the coolant tank cap and fill it to the proper level. Start the engine with cap still open and let the engine idle for a few minutes. If the coolant level should drop as the thermostat opens, top it up as necessary.
  
  Is the Ford Edge heater blowing cold air?
  
  2014 Ford Edge heater is blowing cold air!!! FIXED! – YouTube 2014 Ford Edge heater is blowing cold air!!! FIXED! If playback doesn’t begin shortly, try restarting your device.
  
  Why does my Ford F-150 blow only hot or cold air?
  
  The heater core is buried deep, but you can feel the entry and exit hoses. Hot water in, hot water out, then everything is fine. If not, your heater core may need back flushing. (Related Discussion: Before replacing heater core – www.f150online.com.) Step 2 – Does the A/C work? Figure 2. Check the coolant temperature sensor.
  
  Why is my air conditioner blowing out cold air?
  
  They also have a vacuum operated valve that shuts the hot coolant from going through the heater core, its so that when you have the ac on its not fighting against the hot heater core. Sometimes these valves get stuck. I just remove it when that happens and I don’t notice any difference with the ac.
  
  Why are the radiators on my truck overheating?
  
  The copper brass radiator can internally corrode and plug themselves up and a condition called solder bloom could cause the tubes to seal shut. Both copper brass and aluminum radiators can also plug up when you add too much stop leak, or while working on the engine you allow gasket material or dirt to enter the cooling system.
  
  When does HVAC system start blowing hot air?
  
  Fault codes can help you make sure this is the cause of the problem. This issue usually begins to occur after around 125,000 miles. If your HVAC system starts blowing hot air in the middle of the summer, restarting your vehicle will often work as a temporary fix. Replacing the actuators offers a permanent fix to the problem.
  
  Why does my Chevy truck have no heat?
  
  When the thermostat opens the coolant level will drop in the radiator, at this point keep filling it as necessary until full. Like joemom says, make sure the thermostat is working properly. 9 people found this helpful. I changed my thermostat all of my hoes is getting hot and it just blowing cold air out my truck I have a 93 Chevy.

Why does my car heater keep blowing cold air?