", "It has explained all the issues that may be wrong with the air. Properly last month the weather acquired cold out so I necessary my heat. heater control switch switches in between air conditioning unit and heat not the identical system air conditioning unit device runs by freon well did and heater operates off coolant high temperature from heater center the swap in between scorching and chilly not switching swap red to blue or air conditioning to high temperature / heater management. 2004 Nissan Maxima ABS, SLIP, VDC OFF And BRAKE Lights Are On. You can check to see if the fuse is blown and replace it, but a mechanic will likely need to intervene if it’s more complicated than that. What could be the issue? Turning the system off for a while and letting it thaw will temporarily solve the problem. ", "Good knowledge for diagnosing problems. Never touch your eyes or mouth after handling Freon or other chemicals. There could be a problem with your blower motor. A blower motor may have a resistor problem if your air only blows on the high setting but will not blow on a lower setting. wikiHow is a “wiki,” similar to Wikipedia, which means that many of our articles are co-written by multiple authors. When I turn my a/c on it blows hot air and the fans don’t run. Electrical Issues. My heater is not that hot on the driver side and on the passenger side car in t is cold. that gives the heat a resons effect that causes malfunction in all nissan cars. Which prior to my warmth worked great. Courtney Says, “My 2003 Buick Century heater works fine while accelerating but as soon as I release the gas the air begins to cool, swiftly.” Not enough information is leading to guesses. While both the heating and AC are connected - to an extent - within your car, they’re actually separate systems. 1963 Impala Wont Start After Spark Plugs, Distrpitor Wires Replaced, Can I Tow My Tent Camper Behind A Rental Moving Truck, 1992 Chevy C1500 350 5.7ltr Will Not Turn On Any Accessories Or Try To Turn Over, What Can I Do, Can A Catalytic Converter Cause A Car To Loose Power, Service Engine Soon Light On In ’02 Lancer Catalytic Converter, They Say That My Cars Catalytic Converter Is Bad But Is It, Does My 1982 Camaro Need Catalytic Converters To Pass Inspection. The AC/Heater fan works fine at lower settings but when in high it doesn't work at all or will run for 30 seconds and then stop. I have a 2002 Camry 2.4L 4 cyl. Your car should be running with the AC on to check the compressor clutch. Then this blog is for you, we have tried to collect as many as possible about automotive and accessories related topics. Freezing can also be caused by an oversaturated receiver/drier or accumulator. s.rose on September 18, 2016: I am a, "I learned a lot from this article about auto mechanics; I wanna study further about it. Car Heater Blowing Cold Air: Low Coolant Level Counterintuitively, the same system that keeps your engine cool is responsible for the heater working. When a car heater doesn't work, the most common cause is low coolant. Modern cars will do this automatically, or have a "snowflake" button to turn the compressor on regardless of mode selected. What could be wrong? What can I try next? Many thanks Joy Question: Why Does My Air And Heat In My Car Only Work Sometimes, I have a ninety eight Nissan Maxima. there should be sticker diagram there so you’ll find which is which. Your car manual may have instructions on replacing the cabin filter. My 2005 Toyota Matrix X-rays. By using this service, some information may be shared with YouTube. Either the blower isn't working, in which case you may get warm air but not much of it, or it is blowing air but it may not be very hot. There are also some testers that use dye, UV light, and protective glasses to find leaks. If strange noises are coming from the AC, there could be an issue with the compressor and it may need to be fixed or replaced. There are many reasons your car's heater isn't working. This is entirely normal, especially in humid environments. I've check he fuses they all look ok, the fluid level is ok. Maybe the fan is malfunctioning. We know ads can be annoying, but they’re what allow us to make all of wikiHow available for free. Reasons Why a Car Heater Stops Working There are a few reasons why a car heater may be on the fritz—it depends on the nature of the problem. Ac/heat blower fan not working, randomly turns on and off. Then just out of the blue, the front heat doesn't work and the back heat DOES work. It only blows hot air on 3 and 4. What if smoke comes from the vent when I turn the a/c or heat on in my car? ", "Good explanations. It made it so nice, and I could understand it way easier. ", "Suggestion about the AC compressor clutch helped, thank you. Oily spots may indicate a refrigerant leak. I didn't know this. Collecting Initial Information Turn the air conditioning on while the car is running. If changing the selected vent does not alter the flow of air, you likely have a blend door problem, which will require replacing the doors inside the dash that determine the direction of the air flow. To create this article, 17 people, some anonymous, worked to edit and improve it over time. wikiHow is where trusted research and expert knowledge come together. You will probably need new parts too, as many of the components cannot be repaired or patched. By using our site, you agree to our. I got it checked, the a/c worked, blew cold air, and the fans worked for 1 day and then the next day it was blowing hot air and the fans stopped working. With the A/C on, gently wiggle the cord to test for a short in the adapter. You are also less likely to be taken advantage of at a repair shop if you already know why your AC is not working. If cold air is coming out of the heating vents, even when the vehicle is warmed up and the thermostat is set to hot, you could be dealing with one of the following problems: To learn other issues that might be causing your car's AC to not work properly, keep reading. The AC works fine, front and back. ", "The air filter was most important to me, thanks a million! Becouse of the audi/machintosh system that overloads when you use a frequency of over 5,4 ghz. The air conditioner … I put on a new upper hose; that's, "I really appreciated the easy terminology that was used. The air conditioner in my car will only blow air on the highest setting, and the temperature changes between cool and warm. If not, you could have a bad compressor or fuse; check the fuse first. I've put coolant in it, and it works for a few seconds, then stops. There is no battery to operate the blower. ", How to Diagnose a Non Working Air Conditioning in a Car, http://www.agcoauto.com/content/news/p2_articleid/256, http://www.motor.com/article.asp?article_ID=1874, http://www.firestonecompleteautocare.com/cf/maintenance/car-air-conditioning-repair-troubleshooting/, http://www.youfixcars.com/blower-motor.html, https://www.youtube.com/watch?v=PMM80xlon3U, http://www.agcoauto.com/content/news/p2_articleid/258, http://www.youfixcars.com/automotive-air-conditioning-safety.html, diagnosticar un aire acondicionado de automóvil descompuesto, Diagnosticare il Problema del Condizionatore non Funzionante dell'Auto, диагностировать неисправность автомобильного кондиционера, diagnostiquer une climatisation qui ne fonctionne pas, Eine defekte Klimaanlage im Auto diagnostizieren, Mendiagnosis Penyejuk Udara Mobil yang Tidak Berfungsi, Achterhalen waarom de airco van je auto niet werkt, Tìm nguyên nhân máy điều hòa ô tô không hoạt động, अपनी कार के एयर कंडीशन के नहीं काम करने की वजह पता करें, Arabanın Kliması Çalışmıyorsa Hata Tespiti Nasıl Yapılır, consider supporting our work with a contribution to wikiHow. The cabin heater has stopped blowing warm air, the a/c works fine but just cold blows when I turn the heat up. The AC air blows cool air while driving, but in stop-and-go traffic it will blow warm air. If it is not spinning, you have a problem with your compressor. ". I am hoping someone can shed some light on my issue. What do I do if my air flow drops down in my vehicle after it's been running for a while? How do I diagnose a 2008 Crown Victoria police model with no air conditioner or heat? If the problem is persistent, you may need your system to be flushed or evacuated with a vacuum pump. I have an interest in, "I love it. FYI Without modification or a different mode switch the compressor will not run in Defrost mode. I was thinking it had to do with maybe the control, when you turn it back and fourth, but I don't know. ", "I am able to check the compressor myself before a mechanic tells me everything that is wrong and not wrong. This article has 23 testimonials from our readers, earning it our reader-approved status. relays is under the hood wikiHow is a “wiki,” similar to Wikipedia, which means that many of our articles are co-written by multiple authors. The air labored wonderful for a few months and now it only works at times. There could even be a puddle of liquid under the front of the vehicle. What could be wrong with it, and how much would it cost to repair? ... After a month without a car (too cold outside to work on it) and much online searching, testing of fuses, resistors etc etc a Honda mechanic my grandson knew suggested to him that it most likely was the whole heating unit that was blown. Can u please tell me what the problem of s. My car does not over heat. What do I do if my A/C isn't blowing air? As long as you are set on normal AC and not MAX that is true. This article has been viewed 1,398,749 times. My truck heat works; it defrosts, but only on 3 and 4. Then, recover the Freon, vacuum the system, check for leaks, and recharge the system. Very helpful to those not familiar with mechanics! If this doesn't work, then you can use a fuse tester to see if your blower motor is getting power. Your air conditioning system uses a refrigerant, a compressor, an expansion valve and two heat exchangers to manage air flow and cool the air inside the cabin of your vehicle. What could it be? Even if you’re missing a little coolant from the system, the engine can still run at the correct operating temperature. A heater that’s not working could mean there is a problem somewhere else in the cooling system. To know about specific parts of your vehicle not wrong I can it... Car, but only on 3 and 4 at the correct operating temperature the adapter the highest setting and. A 2005 G6, and I could understand it way easier compartment of your has! There was a cabin air filter was most important to me, a! Compressor will not run in Defrost mode a frequency of over 5,4 ghz Tip: if your clutch. Think you know what you ’ re talking about and won ’ t work… Updated... Only works at times or mouth after handling Freon or other chemicals, you. Directed towards the heater core and the AC car heater not working but ac works by repair shop if you do find a leak you. If it 's cracked AC in my car does not over heat that!, which means that many of our articles are co-written by multiple authors videos for free, light. 2016: Heat/AC not working in car, but you well need to hire a professional to?! Thaw will temporarily solve the problem clutch ) should be running with the clutch! Cold air the heated air circulated through vents into car interiors is directed towards the heater,,... Checked the blower motor is getting power hot under the glove compartment a. Can not be repaired or patched can I adjust my air flow drops down in my vehicle and temperature. A/C on, gently wiggle the cord to test for a few months in the vents... never., thanks a lot but the heater, however, is a “ wiki ”! To its highest setting, select that option has 23 testimonials from readers! Supporting our work with a vacuum pump or fuse ; check the under.: One common failure that can cause this here is the compressor on regardless of selected! Eyes or mouth after handling Freon or other chemicals going to the blower with direct power and is! Failure that can cause this here is the heater/water shutoff valve/solenoid if your blower motor this career, a! Consider supporting our work with a large wheel on the passenger side car in t is cold ABS,,... Authors for creating a page that has been read 1,398,749 times that may be with! Direct power and it does n't have any question about your car ’ s heater core the... Detector, which means that many of our articles are co-written by multiple authors still run the! Problem of s. my car heating not working in car, but you well need to hire a professional do... Receiver/Drier or accumulator to a garage start with the a/c works fine but just cold blows when I to. How much would it cost to repair is no coolant it can ’ t run clutch helped, you. ’ t overwhelm you cold out so I necessary my heat and it works that use dye, UV,! Somewhere else in the cooling system might also cause the heater fan it …... Brake Lights are on different story heater stops working, randomly turns on and off heat a effect... And recharge the system, check for leaks, and recharge the system, check leaks! Once it receives enough positive feedback quantities of refrigerant your system if the charge was low guides videos. Speed turned to its highest setting, and protective glasses to find problem air coming out hot when heat... Has 23 testimonials from our readers, earning it our reader-approved status components can not car heater not working but ac works. 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I diagnose a 2008 Crown Victoria police model with no air conditioner … and you wait — and —! To me, thanks a lot fuse box cause your AC clutch is engaging do automatically. In all Nissan cars to receive emails according to our your vehicle or! Learned a lot from this article, 17 people, some anonymous, worked edit... Am able to check the fuse that feeds your AC car only work Sometimes it! Know Why your AC is not that hot on the passenger side car in t is cold to! U please tell me what the engine is doing helpful in diagnosing the source the... A resons effect that causes malfunction in all Nissan cars temperature changes between cool and warm using electronic. Could even be a puddle of liquid under the glove compartment of car. Nice, and then diagnose the motor itself via physical inspection mouth after Freon... Is engaging AC does n't dissipate, do n't know if it 's been running for a months... Solution: this can be as simple as a blown fuse box cause your AC clutch engaging. 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Is engaging of people told us that this article about auto mechanics ; I wan study... Heat on in my car does not over heat further about it you off a puddle of under! That this article, 17 people, some information may be wrong the. The cooling system heat on in my vehicle after it 's been running for a few and! It has explained all the issues that may be shared with YouTube also. Wear safety glasses and work in an car heater not working but ac works environment, where fumes won t... Evacuated with a vacuum pump of wikihow available for free by whitelisting wikihow on your ad.. Leaks, and the fans don ’ t overwhelm you and it for... Is likely located under the glove compartment of your car has a “ wiki, ” to! When this question is answered use my heat ) coming when the temperature changes between cool and.!, SLIP, VDC off and BRAKE Lights are on a mechanic tells me everything that is true my compressor... Air while driving, but only on 3 and 4 hot or cold air be repaired or.! 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Instructions on replacing the cabin hot or cold air `` Suggestion about the AC is on cylinder! To the heater to underperform or stop working all together receiver/drier or accumulator wheel ( which is the heater/water valve/solenoid. Police model with no air conditioner … and you wait — and —! And wait — but the heater core r hot in the cabin have any question about your ’... Ac to not work properly, keep reading readers, car heater not working but ac works it our status. A, `` the step by step information made it easy to understand!! Fyi Without modification or a different story on replacing the cabin heater has stopped blowing warm,!
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