Car Heater Not Blowing Air

Our air/heater fan only blows air when it is set on high. Just another idea. Or worse yet, you come out to start the car one day, turn on the AC and it's blowing barely cold air when it was fine just yesterday. Step 2 - Most cars are equipped with a cabin air filter or hepa filter. The outside temp here has been anywhere from the 30's to 50's. Blowing Warm Air When it is working properly, your cars' air conditioner is a wonderful thing. Where can I fix the unit?. My car is not blowing air and I just replaced the motor and the resistors. The manual will also show you which fuse to check. But what if your car air conditioner blows cold and then warm air? If it feels like your A/C is playing tricks on you and doesn't blow cold air for long, it could be time to bring your A/C problems to your local Firestone Complete Auto Care. The problem is that the heater will not blow warm air. No heat in your car? Car not blowing hot air? This video will show you how to fix your car's heater whether it is your heater core, heater control valve, blend door, or blower motor resistor, I go. why is my car only blowing hot air? my Ford ka's heater is only blowing very hot air out. Learn more about Chrysler Town and Country at the Edmunds. If the electronic starter does not have power, it will not ignite the burner. Reasons Your Car Won't Heat | Heater Stopped Working Heat in automobiles is supplied by hot coolant circulating through the engine. 3 and I'm having heater problems. Our air/heater fan only blows air when it is set on high. hi there it sounds like the matrix has gone it is at the back of the centre panel at the bottom when the engine is hot touch the matrix to see if its warm. the only way i can get the air flow i mention above is to put the a/c setting on recirculate. Then he flushed it. First, start with checking the antifreeze level inside the radiator if you can see in it, or the plastic overflow bottle on the side. Sounds like some obstruction has gotten into the heater core or the hoses that go to it. When driving, the heat from the engine would blow through the vents due to more air flowing in from the front of the car, but when stopped, the heat stayed in the engine. Several other issues can also cause an AC not to blow cold air as well, including a bad solenoid, bad fuses or vacuum leaks. 18 people found this helpful. Car can idle from cold with no heat until you rev it up and down. COM — Why does your car heater blow cold air? Chances are that if you’re getting a blast of cold air you don’t want when you turn on the vehicle’s heater or defroster, it’s a sign. the A/C cooling works just fine, i keep a thermostat in one of the vents and it sits at 40 degrees. With the car COLD. If it's not blowing hot air. The aircon works and the temp digital display reacts to changes and everything works ok on the display etc. I bought this Car a few months ago from the Dealer. It’s getting cold up here and today my car heater was blowing cold air at me and it’s too cold for that. You either turn it off, or turn the heat up farther to make it heat the air that is blowing. I don't feel that it is a blown heater core, I haven't seen any leaks, don't have any foggy windows when I turn the heater on, nor do I have any odors coming from my truck. In this short auto repair article, a master automotive technician shares his experience, derived from working on air conditioners in. Radiator temperature. All I really hear kick on is the vents, they definitely blow the air, just not cold. Radiators often have one or more fans that blow air through the radiator. DON'T ignore this problem. The heat was coming and going then it just stopped blowing hot air all together. Nissan Qashqai - 09 1. Or not if your car heaters are not working. The hot coolant flows in one side of the heater core and out the other side headed back toward the engine. In this video you will learn how to check the compressor, the pressure in the system, and how to add refrigerant if it's low. AC is not fixed still blowing hot air. Can any one tell me what might be going on ?The temperature guage on the dash is normal and the car has normal heat while moving But not when i stop at a light or at a stop sign!. Years ago this was controlled by vaccum lines, but now everything is electronic. COM — Why does your car heater blow cold air? Chances are that if you're getting a blast of cold air you don't want when you turn on the vehicle's heater or defroster, it's a sign. I'm having problems with my 2001 Ford Fiesta. Was in the car, had the temp set to the red dot, changed the output to the 'face' setting and over 4 or 5 minutes the air went from being really warm to being cool! So the options are: 1) Coolant. Is it possible the thermostate or water pump are faulty. It gets vacuum, but will not blow out other vents. Living in Vermont, I'm hyper-aware of my car's heating system, heated seats, heated mirrors, etc. Maybe it is, but it is scorching outside so it doesn't seem as cold as you would like it. But this air is not very hot. 00 totally ripped off by Firestone, they added the coolant and said they tightened the hose and did a test total rip off the car is not fixed. , Monday through Saturday. It has been leaking a bit of coolant for about a year but topping it up every couple of months does the trick. The temp guage is consistent and steady approximately where it has always been. Well, that's what I thought it would be something as simple as the signal not switching the valve to allow hot water in the heater core or not opening the air flow the right way, but as long as the dealer / Lexus is footing the bill for all this warranty work, I don't mind. Engine block. It can be very uncomfortable and inconvenient if your car's heater system malfunctions as temperatures drop, and instead blows out cold air. He has changed the thermostat, he has flushed the system out but still the hot water is only getting as far as the matrix but not coming back out. Most people would like to see frigid cold air blasting from their small dash vents instantly upon request. Or not if your car heaters are not working. The other main way that car heaters malfunction, other than blowing cold air, is to not blow at all. Brrr! A car heater blowing cold air once things start to get cooler outside is not good. Car Heater Not Blowing Hot Air - cartechhome. However I plugged in the blower motor to the car. Thermostat. Heat emanates off the core and this hot air blow into the car to heat the cabin. No heat in your car? Car not blowing hot air? This video will show you how to fix your car's heater whether it is your heater core, heater control valve, blend door, or blower motor resistor, I go. Depending on system design, you either (A) have a heater control valve stuck in the open position, thereby causing heat to flow through the system at all times. If it's not blowing hot air. Why does my heater fan only blow cold air? 13 Answers. When I reconnect the battery, it comes back on, and it blows cold/hot air via the heater console, but with no control over the blower speed, which blows full blast no matter what level the blower control is at, and again, when the control is turned off AND even when the car is turned off. Blower motor is not getting ground from the control. It is important to understand how the heater works in your car before you can begin to try to diagnose why it is not working. The driver's side is blowing almost uncomfortably hot air. 3 and I'm having heater problems. You can hear it make a noise when you switch from floor to vents like something is opening & closing but doesn't blow out floor vents. After you replace the blower motor and it still doesn't work. Well when i got home today i turned on all settings and everything is working fine, defrost hets hot and heater blows hot, recirculate is working and A/C gets cold. Kind of like the heater/AC in our $45,000. Full Member. When I start the car, let it idle, the coolant temperature guage goes to the exact spot where it always has since it was new, and seems to be normal, but when I turn the heater on it blows "somewhat cold" air. This winter I noticed when idling or stopped the heater blew cold air, even when the engine was warm. I have a honda civic 2001 and it suddenly stopped blowing air. Car heaters that don't blow at all When a car heater doesn't blow at all, the problem is either a bad blower motor or something preventing power from getting to the blower. The heater doesn't give out hot air as it should even after having had the car running for a while. 2007 Lincoln Town Car A/C Does Not Blow Out Vents Author Sparky Posted on June 25, 2016 Categories 2007 , HVAC Tags A/C , Actuator , Heater , Lincoln , Town Car This 2007 Lincoln Town Car came in with the complaint that sometimes the a/c air would not blow out of the face vent. I experienced a similar problem with an older Corolla. the ventilators were very hot and when i turned them around to close them, they were very hot. check the coolant reservoir. 2l model with about 42,000 miles on the clock. radio dont work with code?. my car heater is not blowing any airwhat can be the problem?. The most common cause of a heater blowing cold air is a bad thermostat. If your car’s air conditioning isn’t working, or the system is blowing warm/hot air when you try to turn down the temperature, you have a problem. After driving for about 15 minutes the air flow increases but it's still about half of what it should be. If they are not the same,flush the core. They work by. (side question: what is this fan called? is it the AC fan? The blower motor fan??) The story: So, one day, it just stopped working. A new system should not require a reset to continue cooling. It may not be the easiest of tasks if you are not familiar with working with car air conditioners. The the heat will work as. Hi Brian, I bought the car in August when it was still hot here in Iowa. I let it sit a good 10 minutes so that when I get in, it’s already nice and toasty. Full Member. 7701207717 ) Usually, it is the thermal fuse on it that fails. FIAT Punto II (1999 - 2006) - Heater problems. The air condition is great but no hot air. 8 service reasons your car may not be cooling fast enough Posted on August 18, 2010 by macsworldwide If your car's A/C system is not cooling you off in a reasonable time frame to make you happy, take it to your service professional for an A/C check-up. Car Heater Not Hot. Reader Question. When I turn the heat on in my car it only blows cold air. Just blows cold air. When they go on the fritz the fix is normally simple. First, start with checking the antifreeze level inside the radiator if you can see in it, or the plastic overflow bottle on the side. If your car’s AC is blowing warm air, even after the car runs for a while, it may indicate that you have a Freon/refrigerant leak or a broken compressor clutch, which should spin when working. 2l model with about 42,000 miles on the clock. If it is not blowing any air at all, first check the fuse for the heater/ac motor. The car has just been serviced and has had the oil sump replaced (both 2 weeks ago). One is an inlet and one is an outlet to the heater core. (side question: what is this fan called? is it the AC fan? The blower motor fan??) The story: So, one day, it just stopped working. I'm not sure what concentration level the antifreeze is at. The air conditioner works fine -- it blows cold air. Sometimes blower motors and/or their resistors will fail and stop pushing both hot and cold air through the vents. The AC works just fine and the fan does blow at full power but no matter how long the car has been running for the air still remains extremely. My heater is only blowing cold air, even if I use the temp switch on the dashboard. The heat was coming and going then it just stopped blowing hot air all together. The most common reason that a car air conditioner in otherwise good shape would start to blow hot or temperate air that is clearly not cooled, is due to a lack of coolant. 2) Thermostat. Is your ML blowing hot air even though you have the AC on cold setting? A common problem with the ML320 / ML430 is the AC getting stuck on Hot or Cold setting. Is your air conditioner blowing but not cooling? Here's a quick rundown of the issue. Depending on system design, you either (A) have a heater control valve stuck in the open position, thereby causing heat to flow through the system at all times. The car has coolant and does not overheat. The problem is that the heater will not blow warm air. I have a Ford Focus station wagon year 2000. DON'T ignore this problem. Heater blowing cold air 8 Answers. Fortunately, your air conditioner not blowing is a common problem and a relatively easy fix without having to bring your car to the repair shop. Re: 06 GMC Sierra drivers side A/C blowing hot air I have an 04 GMC Sierra pickup that does exactly the same as what you described above. The most common cause of a heater blowing cold air is a bad thermostat. The blower motor was making a lot of sound. When the car is idling, do all the heater controls work like normal? Does it switch from defrost to floor to vent? You say the heater blows cool at idle, is there a difference in temperature between the hot and cold settings when it's doing that?. My car only has 34,500 miles on it. So the blower works just not when the A/C is on. The heat from the hot coolant is what your heater normally blows throughout the inside of the car. Sometimes people. When I reconnect the battery, it comes back on, and it blows cold/hot air via the heater console, but with no control over the blower speed, which blows full blast no matter what level the blower control is at, and again, when the control is turned off AND even when the car is turned off. Your car will not provide interior heat if the coolant is not allowed to flow properly. If this filter becomes clogged due to lack maintenance it will stop or slow the flow of air exiting the vents. This is an easy fix once you find the bleed port or bleed screw after the fan kicks on while the engine is running. The air condition is great but no hot air. I am not super experienced working on cars, but after some googling it looked like the thermostat could be at fault. When the blower is running after the car warms up it blows cool air. If your car is only blowing cold air, even when the engine is warm there are a few potential causes. Do not let your car overheat! Overheating can cause additional problems, such as blowing your head gasket, even warping your carburetor. Beware though: it's a pain the butt. Blower motor is not getting ground from the control. Now you're wondering what's going on. unfortunately we've had many AC, Heating and most recently hot water heater issues the first year in our house-- and we have opted to not use our home warranty in order to us KB Complete. The heater in your car is basically a smaller version of your cooling systems radiator. Sometimes blower motors and/or their resistors will fail and stop pushing both hot and cold air through the vents. Car AC Not Blowing Cold Air: A Bad Fuse The first thing to check with any issue related to the car's climate control or electronics is the fuse box. Today we look at what might be causing those issues. The heater core remains hot, but air flowing around it is not heated. yesterday it completely stopped blowing out anything on any setting. The water tubes to and from the radiator are hot. Toyota Camry a/c blowing hot air, Toyota, Lexus, and Scion, 16 replies how long before heater blowing hot air?, Automotive, 39 replies Heater blowing cold air, Automotive, 12 replies New car- vents blowing warm air when idling/driving slowly, Automotive, 13 replies problems w my ac/heater on my 2004 maxima, Nissan and Infiniti, 0 replies. This weekend I replaced the thermostat and checked the coolant level and the heater still won't blow hot air. com Car Forums! Read real discussions on thousands of topics and get your questions answered. Here are the top 4 reasons why your air conditioner is not blowing cold air: The air filter is blocking airflow. Long story short, a dirty air filter prevents your AC from delivering enough air around your home. Additionally, the quality of the air being introduced into the cabin will improve by removing more dust and pollen that can cause allergies, instead of adding to the mess. It is a fact that running your heater on recirculate blows harder then vent. Then, gradually, you began to notice that it wasn't really blowing cold air anymore, or that it would only blow cold when the car was moving but not at idle. Not Walmarts fault, but honestly, fix your heater cause this is junk as most auto heaters are. Solution: Change the air filter and see if your furnace starts only blowing warm air. The heater is not blowing hot air either. Took it in today, we'll see. I keep my dual-climate control system on 70 degrees all the time. My car is the 06 3. Not much air blowing out the vents. Heater blowing cold air 8 Answers. Not great when the temp is reading -12 on the clocks!! Coolant level is OK. A heater does not blow air becasue there is no moving air. I have replaced the thermostat, burped the coolant via the brass valve on the thermostat housing. A4 heater, only blowing cool air. Any assistance would be super appreciated. Car Heater Not Blowing Air Here are answers from FAQ Farmers: The duct fan is bad. Sometimes car won't blow hot air even with a functional thermostat and water in the system. I get a lot of questions about car air conditioning systems not blowing cold enough. (side question: what is this fan called? is it the AC fan? The blower motor fan??) The story: So, one day, it just stopped working. My car is the 06 3. If your A/C in your car turns on but isn't blowing any cold air, you might have one of a few problems. If you're wondering, is your Toyota car heater blowing cold air, here are some other issues that you will want to watch for: Not Enough Coolant First, check this to be sure your levels are topped off. By Andrew S. And, in cold weather, heat pumps tend to blow warm air out at 95°F. Where can I fix the unit?. An air conditioner that isn't blowing cold air, in Florida. Like I said,check both hoses,should be the same temp,and feel full. In this video you will learn how to check the compressor, the pressure in the system, and how to add refrigerant if it's low. It is a piece of junk. As did the author of this letter, you want your fan back. why is my car only blowing hot air? my Ford ka's heater is only blowing very hot air out. A faulty thermostat cannot warn the car that its engine has heated up owing to which the coolant will not be transferred, heat up the heater core, and thus it will blow out cool air. We can also blend the flow with air conditioned air to produce almost any temperature required. There are no causative events, it just stopped working. Previously it was very hot air. My car is blowing cold air one day, then hot air the next I have been driving my 2006 Honda accord SE for 3 months and my AC is blowing cold air one day, then blowing hot air the next day. Or not if your car heaters are not working. The heater worked great this winter then suddenly stopped blowing hot air just a couple weeks ago. Basic in design, heaters are usually trouble free. 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. The most common cause of a heater and air conditioner blower not working on a car is a faulty blower motor. Air Conditioner Is Not Blowing Cold Air. Engine block. Most modern systems first cool and dehumidify the air and then reheat it to the desired temperature. Any number of culprits could be causing your car A/C to blow cold then warm air, including:. Ford Fiesta. It is maddening to get into your car or truck on a cold day to find that the heater is not working. The fact that you can't terminate air flow at the vents, however, would not really fit. Whe I turn it on there is no problem with the blower but it just blows warm air. If the fan is damaged or cannot run with its full force, it cannot cool down the heat coming from the Freon (refrigerant) through the condenser. The outside temp here has been anywhere from the 30's to 50's. If your car is running low on coolant, if there’s air in the system or if the core itself isn’t working properly, then this could be the cause of your car heater not working. No heat in your car? Car not blowing hot air? This video will show you how to fix your car's heater whether it is your heater core, heater control valve, blend door, or blower motor resistor, I go. How To Fix No Air Conditioner - No Blower Motor - No Heat - Duration: 12:29. The air is blowing from the vents and it is cool air, not hot air, but its not blowing enough cold air to lower the temperature inside the car. The manual will also show you which fuse to check. Learn 6 reasons why your AC isn't blowing cold air and what to do about it. If there was a short or a surge in the system, the fuse might blow to protect the delicate electronic components from damage -- but in so doing will render the system inoperable until the fuse is. I adjust the settings and it blows cold even when the car isn't just ideling. Learn more about Chrysler Town and Country at the Edmunds. There are several reasons why your car's heater may be blowing cold air, instead of heat. May blow heat on one side and cool air on the other side when the a/c is on. Is your air conditioner blowing but not cooling? Here's a quick rundown of the issue. Faulty Heater Resistor (Otherwise known as the Heater Blower Resistor, Resistor Pack, Heater Rheostat or Blower Motor Resistor, Part No. A faulty thermostat cannot warn the car that its engine has heated up owing to which the coolant will not be transferred, heat up the heater core, and thus it will blow out cool air. Of course since it's getting cold outside, my heater and defroster only blows hot air on the passenger or right side vents. By Andrew S. So the air from the heat pump just FEELS relatively cool compared to your body. As it passes through the engine, the water absorbs the heat and is then circulated through a heater core where a fan blows the warm air into the interior of your car, truck or van. Instead, the motor's heat gives you a nice (or not so nice in the summer) warm air flow instead, so long as the fan is not frozen as well. Fan failure is one of the most common causes of car heater failure. This is like a mini radiator, and the blower blows air over the matrix, and into the car. If your car isn't blowing hot air, the first thing to check is the thermostat. The driver's side is blowing almost uncomfortably hot air. As did the author of this letter, you want your fan back. When I turn on the a/c or heat there is very little air blowing out of the vents. If this filter becomes clogged due to lack maintenance it will stop or slow the flow of air exiting the vents. No air blows through vents, No AC, No Fan, No heat! If this is your first visit, be sure to check out the FAQ by clicking the link above. 00 totally ripped off by Firestone, they added the coolant and said they tightened the hose and did a test total rip off the car is not fixed. The fan inside your car then blows heat off of it to give the cabin heat. How does the Model S heater derive its heat? From the coolant loop or from a heating element? For energy conservation, I imagine that it uses the coolant loop. Depending on system design, you either (A) have a heater control valve stuck in the open position, thereby causing heat to flow through the system at all times. A ride can be even more uncomfortable if you are stuck in traffic. The problem is that the heater will not blow warm air. My car only has 34,500 miles on it. Hi, I have a 2007 1. It's take the car like 10 minutes to start blowing out warm air, and its barely warmplease help me! i've been searching around and the only think i can find is either the heater core (but my car isn't leaking coolant at all) or the thermostat (but my car isn't overheating or not heating up, the CTS is working and my gauges show the engine. If the blower motor is getting power, it's probably a bad blower. My car is the 06 3. The the heat will work as. When a car overheats, it is an indication that there is a problem with the engine cooling system. its annoying me. It seemed to fix the problem until recently i lost the hot air and noticed the radiator leaking. Is your ML blowing hot air even though you have the AC on cold setting? A common problem with the ML320 / ML430 is the AC getting stuck on Hot or Cold setting. Â will sometimes correct itself if car is turned off and let sit for a period of time. Your patience during this time would be much appreciated. I did that and now the heater and engine run great. If your car's AC is blowing warm air, even after the car runs for a while, it may indicate that you have a Freon/refrigerant leak or a broken compressor clutch, which should spin when working. After getting my house heating fixed my car heating has decided to give up. Reason #1: Not Enough Coolant. Many different things can go wrong here causing the whole system to work poorly or not at all. Ive left it on for up to 10 mins to see if it would at least warm u. It gets vacuum, but will not blow out other vents. The heat from the hot coolant is what your heater normally blows throughout the inside of the car. Not only is driving in the cold less than comfortable, but your defroster also doesn’t work without heat either. He has changed the thermostat, he has flushed the system out but still the hot water is only getting as far as the matrix but not coming back out. First, the air conditioner may not be the problem. I do not know wtf is going on. Check out what he's been through, and why he should have asked an expert from the start. But this air is not very hot. The heater works by circulating the hot coolant from the engine through a radiator, then forcing air through that radiator the air forced through then heats up prior to entering the cabin. Maybe it is, but it is scorching outside so it doesn't seem as cold as you would like it. Start with the fan speed turned to its highest setting. Air Conditioner Is Not Blowing Cold Air. If it's not blowing hot air. It is important to understand how the heater works in your car before you can begin to try to diagnose why it is not working. Heater has decided to blow cold air only. This could be caused by a restricted heater core or a thermostat that is staying open - or the t-stat is opening too soon. Noise could indicate that there is a problem. Previously it was very hot air. Re: 06 GMC Sierra drivers side A/C blowing hot air I have an 04 GMC Sierra pickup that does exactly the same as what you described above. The cooling fan in the condenser is the first thing that you should look into while finding out the reason for car air conditioner not blowing cold air when idling. There is simply not enough freon capacity in the system to cool the air to the drivers side. Most late-model cars use electric motors (called actuators) to change the air temperature and direction of the airflow by opening and closing flaps in the heater box under the dash. My front air does not blow out (it works in the back). Hi Can anyone give me some guidance or help, I have a vauxhall vectra 07 plate 1800, the heater not been blowing hot air, took it to garage and they said they did all the usual things but put this tester on it apparently it was a chemical tester and they said it failed that, and it indicated a problem with the head gasket. What typically causes this is the door breaks and no longer is moving and you have to replace the door. Stuck Thermostat There's a valve that opens and closes depending on the temperature of the. Low Air Flow From AC Vents – Auto Repair Tips/Tools June 27, 2009 9:52 am dennisb - Auto Tool Sales Air Conditioning , DIY , How To Auto Repair Leaves accumulated near the fresh air intake can enter the car’s evaporator case. You can call U-FIX-IT Appliance Parts at 817 472-7740 for free personalized help with the diagnosis. , Monday through Saturday. When I turn on the a/c or heat there is very little air blowing out of the vents. Can any one tell me what might be going on ?The temperature guage on the dash is normal and the car has normal heat while moving But not when i stop at a light or at a stop sign!. If the heater is working fine, both these hoses will be hot to the touch. Days will go by and then out of nowhere the blower well start to work and blow perfectly fine on all speeds for a day or so and then it will stop. Hey all! Been awhile but have an issue. You would have a problem with the temp blend door inside the dash. This winter I noticed when idling or stopped the heater blew cold air, even when the engine was warm. Replace it. A flush can be done by disconnecting the heater hoses at the water pump (when the car is cold) and using compressed air to push the coolant and gunk backward, out the inlet hose. Heater not working in Brand New CLA I am having the same problem with the heat in my 2014 CLA. As did the author of this letter, you want your fan back. If the fan is damaged or cannot run with its full force, it cannot cool down the heat coming from the Freon (refrigerant) through the condenser. Sometimes people. Off to toyota and thats £400 for a new radiator fitted. Hence the role of heater fan is crucial in the entire assembly, as without it working in full blast, you may find car heater blowing cold air inside. What happens though when this car heater that is so valuable to us during these crazy winter months begins to blow cold air?. Brrr! A car heater blowing cold air once things start to get cooler outside is not good. Fan is not blowing air inside the car. How To Fix No Air Conditioner - No Blower Motor - No Heat - Duration: 12:29. Replace it. When I start the car, let it idle, the coolant temperature guage goes to the exact spot where it always has since it was new, and seems to be normal, but when I turn the heater on it blows "somewhat cold" air. The air ducts have leaks. Car heater blowing warm, but not hot air? Chevrolet Silverado 2500 blows warn air on both drivers and passenger side. The fan inside your car then blows heat off of it to give the cabin heat. A new system should not require a reset to continue cooling. Its seems issue in control assembly (climate control module). But, when we adjust the temperature to heat, the temperature stays cold and the heater does not get warm. A faulty thermostat cannot warn the car that its engine has heated up owing to which the coolant will not be transferred, heat up the heater core, and thus it will blow out cool air. Chrysler has issued this service bulletin to advise dealer to flash upgrade the HVAC software as a first attempt to correct the issue of intermittent cold air or blowing warm air regardless of the temperature setting. To cool yourself in a car without air conditioning, freeze a couple damp rags, drape them over the AC vents in your car, and turn on the fan so it blows cool air. Furthermore, your engine may be at risk if your heater is blowing cold or lukewarm - it could be the result of debris and buildup in your cooling system, which impedes the flow of coolant and will eventually cause your vehicle to. Any other suggestions? this car is starting to rightly píss me off. This is like a mini radiator, and the blower blows air over the matrix, and into the car. The heat from the hot coolant is what your heater normally blows throughout the inside of the car. My car is blowing cold air one day, then hot air the next I have been driving my 2006 Honda accord SE for 3 months and my AC is blowing cold air one day, then blowing hot air the next day. I am having a very strange issue with my heating in my 2012 Holden/Chevy Cruze Hatchback (1. Maybe it is, but it is scorching outside so it doesn’t seem as cold as you would like it. Within a few seconds of stopping the heater blows cold air. These were all excellent. Replace it. Fortunately, there are things that you can do if your air conditioner is not blowing cold air. Car AC Not Blowing Cold Air: A Bad Fuse The first thing to check with any issue related to the car's climate control or electronics is the fuse box. Car Heater Not Working - Blowing Cold Air! There are several reasons why your car's heater may be blowing cold air, instead of heat. 5L with 98k miles. Antifreeze is topped up, problem started with intermittent heat, now none at all. Solution: Change the air filter if it’s dirty. The the heat will work as. Toyota Camry a/c blowing hot air, Toyota, Lexus, and Scion, 16 replies how long before heater blowing hot air?, Automotive, 39 replies Heater blowing cold air, Automotive, 12 replies New car- vents blowing warm air when idling/driving slowly, Automotive, 13 replies problems w my ac/heater on my 2004 maxima, Nissan and Infiniti, 0 replies. It's an 2004 Audi A3. You may have to register before you can post: click the register link above to proceed. In such a case, you can fix your car thermostat, which is very economical and easy to do. Any suggestions? Thanks, John.