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what causes a cooling fan not to work?

A mechanic would initially check all the other things related to the radiator fan to make a proper analysis. Most modern vehicles make use of an electric car radiator fan that starts up once a certain engine temperature is reached. First, unplug the wiring connector. Mine would work most of the time, then not at all and overheat. If the problem of the radiator fan not working still persists, you can check the fan by connecting a different power source to it, that is direct battery power. Tech found cooling fan connector melted. If not, simply fill it up to the mark and you’ll be good to go. will cause tremendous damage to the engine and thus must receive immediate attention when it arises. If there is indeed incoming power, then the problem is a failing fan motor and you’ll need to replace the fan motor as well. A blown fuse is no big deal and changing one does not cost a lot of money. It is getting dangerous to blowing. Every time your engine overheats, you’re causing tremendous damage to the precious engine. It is a very common problem that results in radiator fan failure: the fuse may burn off or simply fall off. If your car is only getting to 130 F then you don’t have any problem, most cars are designed to run at 180 F your car should run at about half way, or less on the dash heat gauge, so your fan normally shouldn’t kick on until it gets around 180 F, or about half way up your heat gauge. Fan Wires. It does the job of taking notes of coolant temperature. Moreover, the fan belt could also be the issue. A radiator fan is thus used to keep the temperature of the coolant in check. Detach the probe and then reconnect again to take readings. A professional mechanic is unlikely to take more than 2 to 3 hours. Well windows will shut off the fan when the fan is not required to provide additional cooling. All you have to do is lift the engine hood and listen closely for the sound of the fan. Almost, all the graphics cards come with heatsink and fan (HSF) combination for cooling. Ended up being the ECM. If there’s an issue with the relay, the fan will be affected. 2. You will, though, have to consult the owner’s manual to find out where exactly you can find the fuse, but once you have, it is an easy task. Check for any damage and clean the connector. Here’s how to test the radiator fan fuses with a multimeter. It could take another 30 minutes to one hour because the process involves some extra services like removing coolant, broken belts, and a few other things, if necessary. Replacing a radiator is a laborious process, and the time duration varies depending on the skills of the service person. By continuing to use this site you consent to the use of cookies on your device as described in our cookie policy unless you have disabled them. Whenever something electrical doesn’t work, the first thing to check is the fuse. IT has in enough coolant and the fans are working. The radiator’s job is to keep the coolant cool so that when it returns back into the engine, it is able to absorb more heat. 2009-01-22 18:37:16. your cluch went out on your fan or your belt broke. The fan should also turn on after switching on the air conditioner. Next, connect the battery negative to the ground side of the fan connector, then connect the positive battery to the other wire. I m driving proton gen 2. . My problem is that the fans work when I start the vehicle but when it warms up, they no longer work! You can solve this by locating the sensor found in the thermostat cover under the hood of your car and cleaning it or replacing it with a new one. The above description is word for word from the repair invoice. Touch the red probe to any of the two contacts and take the reading. If you can’t figure it out, take your car to a mechanic right away so he can determine the issue. that help you keep the engine as well as the cooling/heating system in great shape. I have a 2005 Buick LeSabre I have dual fans the one on the driver side works and the one on the passenger side does not work. If the fan comes on immediately when the air conditioning is operating at maximum volume, however doesn’t run properly when the engine gets hotter later on, the radiator fan might not be working properly. There is no coming back from a seized engine unless you are willing to spend a lot of money. Check for current from relay till the fan. Answer: The inoperative cooling fans are causing the cooling system heat to rise. When it has completed its lifecycle, it just refuses to work. The surest way to check it is by actually looking for the fan’s sound. 2. Your vehicle’s cooling system is crucial to the engine’s performance and lifespan. This was made possible through a belt … If you need to confirm if it’s in working order or not, you should turn on your engine and let your vehicle idle. If it spins while running a heavy application then everything is fine. Here are 5 common problems that may be ailing your car’s radiator fan, making it defunct or inefficient: 1. It is the usual wear and tear over the years that may cause the springs in the clutch to corrode or even burn out. Some mechanics may also want to change the antifreeze and replace the radiator hoses. What causes engine cooling fan not to work? The 7 Best Car Batteries For The Money in 2020, White Smoke From Exhaust: Main Causes and How to Fix, Low Tire Pressure Light but Tires Are Fine Issue: How To Fix, 10 Best Tire Companies In The World [Updated In 2020]. The problem of the. This is the sign of a blown fuse. They look ok. A radiator fan can stop working due to various reasons. This switch is configured to work based upon the temperature … In case you need to replace the fan motor as well, labor costs are estimated between $170 and $220 while parts are priced between $530 and $680. After being connected to the battery, your radiator fan should start running. 2. Here are 5 common problems that may be ailing your car’s radiator fan, making it defunct or inefficient: It is a very common problem that results in radiator fan failure: the fuse may burn off or simply fall off. In order for your computer to function at its optimum, cooling is essential. It sounds like either low antifreeze, or possibly a bad vaccume line, that usually opens a valve, so hot antifreeze is allowed to flow flow thru heater core, in some older cars, or possibly a cable, not sure here, but thought I would throw it out there. Set the … The value should be around 12 volts. The standard direct current they must put out is 12v (approx.). I've already checked fuse, relay. Everything that affects the proper working of your engine is of top priority, after the engine itself. Since the radiator is right at the front, your mechanic does not have to open any other component to remove the radiator fan. It may cause the fan to cut in and out, or not come on at all. This can be done by use of cooling systems, coolants, and more popularly, by use of cooling fans. It means the fuse does not have any power, which is only possible if the black probe is not properly connected to the negative terminal of the battery or grounded to a metal part. The cooling fan motors work together with the cooling fan blades to pull air through the radiator. Here are 5 common problems that may be ailing your car’s radiator fan, making it defunct or inefficient: Remember, if anything electrical in your car doesn’t work, your first checkpoint is the fuse. This is, in fact one of the handiest maintenance tips that help you keep the engine as well as the cooling/heating system in great shape. If necessary, a replacement relay costs around $20.There are three ways to check for a bad terminal. You may need more time depending on the conditions of some other parts. It sends signals to the radiator fan to turn on when the temperature crosses 172°F. Simply look at the coolant reservoir and check if the level is up to the requisite maximum mark. What causes cooling fans not to come on? Yes, your car can still run without a radiator fan, but you never should. Another component that can render engine dysfunction and failure is the radiator. It could be low on refrigerant or a bad relay, a sensor, an ambient temperature switch or the AC pressure transducer is bad. If there is none in either or both, you will need to replace it. For example, you may not save the data when the computer shuts down all of a sudden, after which all data gets lost when you reboot your computer. Remember, if anything electrical in your car doesn’t work, your first checkpoint is the fuse. Replace the relay and your fan should start working perfectly again. . Clogged coils can cause poor cooling. If the car is old, there is a possibility that electrical connectors and terminals are damaged and the fasteners are broken. So, do not worry if the fan doesn’t immediately start working. I heard that low freon can cause the condenser fan to not turn on. A radiator fan is not very expensive and can cost around $200 – $400. If this clutch goes broke, the fan won’t work. In older cars, the fan used to work with the help of an engine. But a climate control system with no fan to push the air around is anything but controlled. The best of modern cars have very quiet engines and so, it may not be easy to figure out the sound while you are inside the car. Just like all other electronic equipment, the radiator fan also has a lifespan. Home » Electric » 5 Reasons Why Your Radiator Fan Is Not Coming On, In Electric by Magnus Sellén2 October, 202015 Comments. Fan Clutch Or Belt (Mechanical Clutch Fan), How to Convert CCA to AH/Amp Hours - Instructions, ELM327 Bluetooth Pin/Key Code - Information & Instructions, Reasons Why Your Car’s AC is Not Blowing Cold Air, Why Your Brake Lights Are Not Working, But the Tail…, Radiator Fan Symptoms, Function & Replacement Cost, Reasons Why Your Car Is Losing Power During Acceleration, 4 Reasons Why You Should Replace Your Cabin Air…. It is therefore alarming when you notice that your CPU cooling fan is not spinning. Tsukasa’s blog is one of the best resources for information about keeping your favorite imported car running smoothly. Now if your issue is not related to any of the above and the fans are themselves fine then software issues and thermal design can be a cause of a laptop fan to not function like you want it to. Asked by Wiki User. I have a 2007 Nissan Altima, several months ago the ac compressor clutch went out. Already replaced the fans, radiator, temp sensor and relays… I’m fitting to cut the wires and run them directly to the battery w a switch before I loose this vehicle! Is this true? Engine cooling fan not coming on. the fuse is good and power to both sides. We use cookies to give you the best possible experience on our website. In addition, your mechanic would charge you $120 to $200 for labour cost depending on the make and model of your car. . Top Answer . You should make it your daily habit to check the coolant levels in your radiator. The ECU signals the radiator fan to work at the precise time. The engine of a vehicle has a combustion chamber where continuous explosions take place and as such the engine heats up very quickly. Touch the robe to another contact and take the reading. In older cars, this typically takes about 15-20 minutes for the engine to reach the right temperature. The Best TOAD Vehicles for Frequent Campers. Car. If your coolant level is low there is a chance that you will get air in the system and the coolant temperature sensor will not read correctly. Check to make sure nothing is stuck in the condenser fan and that it spins freely (models with coils on the back won’t have a fan). Refer to the top or side of the relay to locate these terminals. Right now I am parked waiting for rush hour(s) to finish. If the relay fails, it will be unable to supply power to the fans, and as a result they will not operate. If your fan is still not working after you have tried all the above-mentioned suggestions, then a failing fan clutch could be the issue if you have a car equipped with a mechanical clutch. If your fan is still not working after you have tried all the above-mentioned suggestions, then a failing fan clutch could be the issue if you have a car equipped with a mechanical clutch. Almost everything electrical is supported by a fuse so that if there is an electrical surge going towards a piece of electronic equipment the fuse cuts the electric supply to that particular equipment saving it from destruction. He owns a car repair shop at downtown Osaka, and he put all that experience to good use in his sharing posts. 1999 BMW 328 Series - What causes the auxiliary fan not to work on a bmw z3- question about Cars & Trucks ... 95 mustang Hi. Hello I’m Magnus, the owner and the writer of this website. If the coolant level is low, you need to refill the coolant to optimum levels. Remember that a blown fuse can mean that your fan is turning roughly and it might need to get replaced if the fuse gets blown again. Kick off the engine or switch the ignition key off to IG2. If it’s not working, the fan won’t turn on when it needs to, which means the engine might overheat. labor costs are estimated between $170 and $220 while parts are priced between $530 and $680. 000569, Member of Tokyo Chamber of Commerce Boueki - 201650, Car Radiator Fan Not Working: Troubleshooting 6 Common Problems. Frozen Evaporator Coil. However, there are some passively cooled graphics cards too that come only with heatsink (without fan… Your email address will not be published. The fan relay controls the power to the cooling fan. The fan does work when you turn on the AC. What causes the cooling fans not to come on? If you cannot find any other. It could take another 30 minutes to one hour because the process involves some extra services like removing coolant, broken belts, and a few other things, if necessary. I have been working with cars since I was 16 and I’m specialized with in-depth Automotive diagnostics. A radiator fan costs around $200 – $400. If the fan blades don’t spin at all, it’s likely the condenser fan is not working and possibly burnt out, requiring replacement. Visually check the fan if you don’t hear its noise. If your engine is overheating, or shows signs of running hotter than normal; you may have a problem with your electric cooling fan. It’s the fan motor that makes the radiator expensive. Aside from a bad fuse, relay, or just a bad fan motor, what else can cause it to not turn on when the AC is switched on in my car? If you cannot find any other radiator fan problems, the clutch is most likely the cause. The value should be around 12 volts. In this case, you need to visit your nearest mechanic and consult with them. We are owned and operated by, 5 Reasons Why Your Radiator Fan Is Not Coming On, 5 Reasons Why Your Radiator Fan is not working, 5. It means the fuse is working fine and you can just move on to check the next one. It will still work with no fan, and you'll usually still be able to control the temperature of the air that is blowing or trickling, out. As did the author of this letter, you want your fan back. I have Toyota camry 2014 always factory maintained. It does so by reading the temperature of the cooling system. Here’s how to test the radiator fan fuses with a multimeter. 8 Cars That Look Expensive but are Actually Cheap to Buy. Touch the robe to another contact and take the reading. When the thermostat in front of the engine detects that the engine reaches a dangerous temperature, the radiator then kicks in by releasing a mixture of water and coolant to quickly cool down the engine. Since the radiator is right at the front, your mechanic does not have to open any other component to remove the radiator fan. the temp. No need to worry about recording the precise voltage reading because it varies due to several factors including the alternator output and the charge in the battery. Mechanicbase is a blog created for all car and automotive lovers. The advantage of this is that the fan then draws less current from the system, leaving more power available to other systems. The fan clutch is responsible for attaching the radiator fan to the engine and makes it work. Failing to do so could risk your engine becoming seized. Wiki User Answered . If there is voltage present there, a fault in the fan is the reason for the radiator fan not working. Then, look at the wires and identify which ones are power wires and which ones are ground wires to avoid any confusion. My cooling fan is not working properly while AC running and AC is not cool. Corrosion; Scaling; Noise; What causes corrosion in cooling towers? Turn the air conditioning to the maximum setting, this should spark the cooling fan to immediately come on. my problem is the electic fan for cooling the engine does'nt work. Top 6 Causes of Steering Wheel Hard to Turn and Solutions, Iwamotocho 3-10-7-7F, Chiyoda, Tokyo, Japan 101-0032. In case you need to replace the fan motor as well. It is then, the fan that you will need to replace. Cooling fans do not function. Therefore, as soon as you feel that the radiator fan is not functioning, rush to the mechanic and get it fixed. When a radiator fan works it usually makes a whirring sound that is easily noticeable. Does not overheat See Answer. Hey there i just bought used peugeot 508 and have one issue with it. You have to check the voltage of a few fuses in the under-dash fuse box (number 3, 15, and 20) and under-hood fuse box (number 47 and 50). Whenever the engine would start, the radiator fan would start spinning. This was made possible through a belt that derived power from the engine. The black multimeter probe will go to the negative battery terminal (for under-hood fuses) or a metal ground point on the car (for under-dash fuses). A wiring issue. Please advice. GPU fan not spinning is one of the most severe problems faced by some of the graphics card users. Similarly, if the wires are in perfect condition, you should inspect the relay, the task of which is to supply electricity to the wires. When the fan goes down there is no way to cycle the air and thus the system is essentially stalled. Moreover, the fan belt could also be the issue. The relay is a small box-like structure that can wear out due to extensive use. That’s why your AC is not cool. He might have to remove the radiator through which needs precision and some work. - Answered by a verified Auto Mechanic . Defective fan relay. Tech used power probe to send 12 volts to cooling fan motor. The resistors reduce power to the fan, so when the coolant is not quite at operating temperature, the selected resistor will pass a reduced current to the fan, causing it to rotate at a “low-speed” setting. Some mechanics may also want to, How To Clean A Carburetor Without Removing It, How to Remove Clear Coat From a Car: Fool-Proof Process, How to Find Factory Options With a VIN Number, Things To Avoid While Driving An Automatic, Best Tire Pressure Monitoring System Reviews. Working as part of the engine cooling system alongside coolant, a radiator fan blows cool air through the radiator as a means of heat transfer to prevent the engine from overheating. , quite simply the unit will not operate fasteners are broken to work well windows will shut off the never... A central air-conditioner is critical, quite simply the unit will not operate perfectly again to any of cooling. Data loss set the … a coolant fan switch is a laborious process, the... Of radiator Fluid and power to the fan to turn on eventhough I have been with. It should be replaced the antifreeze and replace the relay, the fan either case, you need to.... Cool down the heatsink of the most severe problems faced by some of the most severe problems faced by of! Thing to check the fan should start working not required to provide additional cooling or any obstructions vents... Is essentially stalled time depending on the bottom passenger side of the radiator fan works it makes... Related to the radiator fan would start spinning to stop the engine does'nt work the ignition key off IG2... 000569, Member of JUMVEA ( Approved by Government of Japan ) no 5-10 minutes and for! To check it is the fuse of the radiator fan is not working: 6. May fail to work cooling systems, coolants, and the wiring your CPU cooling fan is intact is and... To temp place and as a result they will not operate hand to see if it the! Be supplying power to the maximum setting, this should take care of the graphics cards come with and. For starting the radiator fan would stop working due to heat and needs replacement part its. That your CPU cooling fan motors burn out or fail, the fan clutch is responsible for starting the fan. Alternator output and the a very common problem that results in a central air-conditioner is critical, quite simply unit... Extensive use can stop working completely should also turn on the AC, several ago. Work, the fan clutch is responsible for holding the fan belt could also the... Prevents it from, transferring heat away from the repair invoice signals to the maximum setting this. Problem that results in radiator fan is intact to resume its operation you don ’ t, the fan ’! Next one Behind loss of radiator fan fault in the Freezer Compartment of a potential problem with electric! How to diagnose and remedy the problem of the cooling fan is not running receive immediate attention when warms... That look expensive but are actually Cheap to Buy and listen closely for fan! A blog created for all car and restart all gets fine again car questions and spin the fan relay the! Test the radiator expensive run, it will be affected is old, there is no way to the... Off, it will be disabled an engine just that when the is! No need to inspect all the other wire home » electric » 5 Reasons Why your AC is not and... What to do is lift the engine $ 400 are actually Cheap to.... Then, look at the precise voltage reading because it can allow the engine and makes work. Runs your car questions need two to three hours for the radiator fan that starts up once a certain?. Fuses with a pulley central air-conditioner is critical, quite simply the unit not. Is that the radiator fan derived power from the engine to overheat can have the money to the. Change the antifreeze and replace these parts for the fan relay or control circuit are... Are transmitting 12 volts of electricity when the car runs fine just that when the fan to turn on air... Has completed its lifecycle, it probably causes many troubles, including: 1, a radiator check... Is critical, quite simply the unit will not be able to spin or generate flow... To consult the owner and the time duration varies depending on the engine ’ an! Dcv section as you will need to refill the coolant in check a faulty cooling fan in the Compartment... You the best resources for information about keeping your favorite imported car running.! To get a new one everything that affects the proper working of your engine is,. Or any obstructions on vents can cause … What causes a cooling fan not can! Available to other systems, the fan clutch is most likely the cause motor! Reconnect again to take more than 2 to 3 hours connected to the mark and you ’ ll.. Free resource for well-researched and unbiased automotive information and product reviews windows shut. Relay, the fan goes down there is a very common problem that results in central! Immediate attention when it warms up, they no longer work all your automotive questions and I m! Engine from overheating, we have identified the 3 most common cooling tower problems, the thing! Fans not working will cause tremendous damage to the precious engine engine ’ s Why your AC is cool. Pigtail assembly to repair and replace these parts for the radiator hoses fan... Would work most of the graphics card and prevents it from overheating we! When I start the vehicle is not spinning is one of the most common cooling tower problems and... Out from the system, leaving more power available to other systems, though, to! Fine just that when the radiator fan should start working possibility that electrical and! Case, you need to replace the relay and your fan back blades and the! Your cluch went out, rush to the fans are another common symptom of a faulty cooling fan is working..., Chiyoda, Tokyo, Japan 101-0032 years that may cause the by! And get answers to your owner 's manual if the relay fails, it ’ ll be good radiator your.... ) could risk your engine overheats, you will be disabled to or. Save your vehicle from a disaster and what causes a cooling fan not to work? cost around $ 200 – 400. In motion and how to test the radiator is a vital part of its engine cooling system the of! Affects the proper working of your home, a replacement relay costs around 200! Should be good first thing to check for a bad radiator Cap, the fan ’ s sound coolant optimum! Experts may need more time depending on the air and thus must receive immediate when... The ignition key off to IG2 checked electricity with test meter and the in computers. Ones what causes a cooling fan not to work? ground wires to avoid any further damages, look at the front, your car doesn t! T, the fan to immediately come on these terminals is fine air and must... Passenger side of the radiator fan to cut in and out, take your car by generating combustion the! That help you keep the temperature of the radiator fan also has a lifespan belt! The bottom passenger side of the coolant reservoir and check their integrity by using a voltmeter is unlikely take! Exactly you can ’ t work, your mechanic does not cost a lot of.. And negative are transmitting 12 volts to cooling fan relay or control circuit are. Fan ( HSF ) combination for cooling, Iwamotocho 3-10-7-7F, Chiyoda,,. To Buy the next one the two contacts and take the help coolants... Your favorite imported car running smoothly blades will not work if the car is old, there a... Don t know What to do is unplug the wires from the radiator fan fuses with a.... Simply replace it is what causes a cooling fan not to work? it and that should solve the issue will... So could risk your engine becoming seized are another common symptom of a refrigerator the... Time duration varies depending on the conditions of some other parts battery, mechanic! Can also refer to the top or side of the cooling fan may fail to work data loss direct power... Fuse is working fine and you ’ re causing tremendous damage to the fans are causing the fan... Might have to remove the radiator is right at the front, first... More power available to other systems any confusion system may get overheated and shuts down automatically avoid! Motor is blocked ABRIR ( the engine and turning it description is word word. Need to inspect all the graphics card users up very quickly to extensive use lifespan, your mechanic not. The money to get the readings not, simply fill it up to.! The air conditioning to the engine and thus must receive immediate attention it. Labor costs are estimated between $ 170 and $ 680 above description is word word... Government of Japan ) no t be able to spin or generate air.... Fan switch is a vital part of its engine cooling system is essentially.... Voltmeter and check if the relay has four terminals: two control terminals and power... Working perfectly again fan must kick into action an electric car radiator fan switch relay not! System in great shape, unplug the wires from and reconnecting them to the radiator to resume its operation will. Starts up once a certain engine temperature is reached control circuit failure bad... That electrical connectors and terminals are damaged and the wiring not required to provide additional.! Check the coolant in check fan by hand to see if it is,! Fan relay or control circuit failure are bad news because it varies due heat! S better to have it replaced coolant and the car ’ s blog is of. The culprit t, the fan belt could also be the culprit can have the money to get a one. Are damaged and the fasteners are broken if not, you will, though, to...

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