Through our vehicle checks and approved dealer network, AA Cars helps you buy with confidence. Of all the ones listed above, start with the coolant level, then check the fuse. 6. Although new cars are not immune to wiring problems, radiator fan failures due to issues with wiring are more likely to occur on older vehicles. Most modern vehicles use electric cooling fans to help pull air through the radiator so that it can keep the engine cool. Automobile Association Developments Ltd. If your engine coolant’s too low, it means that the cooling fan will have to work harder to keep the engine at a normal temperature. If the fan motor is not at fault, leave the ignition switched on, take the connections off the thermo-switch and briefly touch them together. If it’s not working, the fan won’t turn on when it needs to, which means the engine might overheat. If the radiator fan is not working, it’s a serious problem. 2. The first thing that you would want to do is locate the fuse for your Liberty’s radiator fan and make sure that it hasn’t blown. A red light means that your engine's overheating. When I popped the hood I noticed that the fans were not working. There are springs within the fan clutch that can wear out or corrode over the years. After that, the order isn’t so important. Log in to your account to book lessons, access your online learning material and recommend a friend. Faulty wiring could be to blame. Check for any damage and clean the connector. If not, you have a fan or relay problem. If you’re moving, air will flow over the radiator and cool it down. If the radiator fan is not working, it’s a serious problem. Budget for your trip and spend only what you've loaded on to the card. The mechanic will check to see if all the wires to the fan are properly connected and in working order. I went to the car wash today and left it ideling. But, you don’t want to miss the easy fixes before you start testing wiring. Find a trusted garage and book, hassle-free, with Smart Care. Jeff . If t he 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. Enjoy discounts on restaurants, days out, car care and more. They are designed to only run when needed. If bridging the pins on the switch does not spin the motor, check the loom for voltage. The fuse under the dash is good and the motor is also good. The fan wiring is some of the more vulnerable wiring in your Liberty. Many modern cars don't have a temperature gauge, but there'll be a light to tell you if the engine's overheating. If it is getting 12+ volts, the fan should be coming on. Log in to see your policy documents, keep tabs on renewal dates and check your cover level. If you have had problems with your engine overheating, check your radiator fan and water pump. The wiring harness itself can go bad. On most modern cars, the cooling fan is controlled by the Engine Control Unit (ECU) which gets a signal from the coolant temperature sensor. Hi, I just had my aircon serviced and the mechanic told me that the aircon is fine, but that the radiator cooling fan is not working, thus preventing the aircon working properly as it controls the cooling fan. Engine bay fan - at driver's side rear air intake You can easily tell which one is running once out of the car. Your mechanic will look for one these common cooling fan faults: As the radiator fan is electrical, the problem could be with the fuse. You’ll need to locate and test the engine temp sensor. You might also see a warning message on the dashboard display. Jump to Latest Follow 1 - 7 of 7 Posts. Depending on the model year and engine, the location varies. 2. Download the app to report and track a breakdown quickly, find Member benefits near you, and more. Fan Problems: Unusual noises are a good indication there is a problem with the fan itself. The radiator fan motor is controlled by the PCM and a radiator fan switch. It is the last line of defense between you and an overheating engine. If it does end up being this sensor, they are very affordable. The cooling fan relay is the relay that controls the engine’s cooling fans. Coolant Level. When I looked down at the temp gauge it was almost to the H mark. 2) Flushed the radiator - still over heats. Find help to manage your current loan or apply online for additional borrowing. They are designed to only run when needed. Disconnect the wiring plug and both electric fans should start when the engine is started and run will continuously with the engine. If they're not, then there could be a wiring issue (e.g., one of the fan connectors isn't attached properly), or one of the fan motors could be bad. If it stops working, your engine could overheat and be damaged. You need to inspect all the wiring leading into and out from the radiator fan. Book hassle-free with Smart Care and get a 1 year guarantee. Check the fuse(s) for the electric radiator fans. There are many reasons why your Jeep Liberty’s radiator fan is not working. Although the fan itself can go bad, that’s definitely not the place to start a diagnosis. 1 - 7 of 7 Posts. The radiator fan itself may be faulty. Honda Fans not working? Run jumper wires between the connector's two electrical terminals. Unless the wiring issue is fixed, the fuse will blow again. Here are the most common reasons that your radiator fan does not turn on: Before poking your hands around your fan, make sure to treat it like it still could come on, and and keep your hands out of its path. Just because the radiator fan is not on does not mean that it is not working. Log in or register to manage your account online, Cooling fan not working? If one or more fuses are blown and the replacement fuse blows as well, check for fan blades for debris and ease of rotation. If everything else seems on the up and up, the springs in the fan clutch have worn past the point of proper function and can no longer do their job. And if it has stopped working, you’ll need a professional to repair it for you. (IT works) Hello all, my radiator fan is not working when it warms up. However the parking lights will not light up, which is wierd since the blinkers work, hmm. This should cut in after 20-30 mins of the engine just sitting idling. Adding coolant to a radiator dry enough not to trigger the engine temp sensor can cause problems from drastic temperature change. Here are some more specifics: The fan motor is controlled by the following important components. If your coolant level is low, then it might not feel as if your car is getting cool, even with the radiator fan turned on and working. It may cause the fan to cut in and out, or not come on at all. If so, a replacement fan costs upwards of $45. I can feel the fan blade is not directly attached to a motor because it can move freely without the motor on, but with some resistence. The headlights and blinkers in the front work. Bad Radiator Fan Motor. PCM (Powertrain Control Module = fuel injection computer). A safe alternative to carrying cash abroad. The radiator fan is obviously the one that Rob had problems with - dirty contacts on the sensor. If it’s scraping, wobbling, or grinding, it could indicate that the fan motor and fan blades are no longer connected. Your car’s cooling fan, or radiator fan, plays an important job in keeping your engine cool. Which makes sense. Retired Ford Mechanic told me that it is usually the fan motor - they go out at about 50,000 miles. The most common symptom of a faulty cooling fan motor are cooling fans that do not come on. If the cooling fan motor burns out, the cooling fans will then, in turn be disabled. If there is anything that you would like to add, please leave a comment below. If the motor that drives the fan is faulty, then a new motor will have to be fitted. If everything else seems to be fine, the fan clutch is the most likely cause of radiator fan … 3) There is a radiator coolant temperature sensor below the fan on the passenger side. If there is power flowing but the motor doesn't spin, the motor may have burned out. See Contact Test in Step 1. There is a electric motor to circulate the coolant next to the thermostat. All aspects of the cooling system, from the fan to the thermostat to the radiator hoses, must be in good operating condition to ensure that the engine does not overheat, which can lead to a costly repair bill. I dont really know what else to mess with, I debated just running a wire strait from the fuse box under the dash and put a manual switch to turn the fan on and off with bu Once you have a known good motor then backtrack to the relay and see what's going on there. If it does not, check to see that there is current flowing to the switch by using a … If it is blown, replacing the fuse will only solve the problem for a very limited period of time. 2021, Even when the unexpected happens. To check the level, look for the coolant expansion tank in the engine bay. It was fine. If a red or yellow temperature icon lights up on your dashboard, you should stop as soon as it’s safe to do so. If the motor fails the blades will not be able to spin or generate air flow. Your author has personally had a shredded tire completely pull the fan wiring out of his vehicle. But, there won’t be enough coolant to reach the temperature sensor. The fan relay controls the power to the cooling fan. If the engine coolant level isn’t high enough to keep pressure in the engine it will run hot. 8L90E Specs, Performance, and Identification, TH400 Transmission Specs, ID, and Common Problems, Jeep Wrangler:  Radiator Fan Not Working Diagnosis, Jeep Commander:  Radiator Fan Not Working Diagnosis, Chevy Impala: Brake Lights Stuck On → Diagnosis. Your Liberty’s radiator fan will not kick on. Your Jeep Liberty‘s radiator fan has one of the most important jobs on the vehicle. According to the mechanic there's power to the motor, but it doesn't run. 92 RS Radiator fan not working. If the red or yellow temperature light comes on, you need to: In modern cars, it’s hard to check the cooling fan yourself as you often can’t see it. If your Liberty has a bad engine temp sensor the radiator fan won’t know to come on, because the ECU won’t know how hot the engine is. But if you stop, for example in a traffic jam, your engine has to use an electric cooling fan to force air through the radiator. 2. DO this easy check First!If your Honda Fans aren't working it can be easy repair. It is the last line of defense between you and an overheating engine. I bought a Ford Racing fan (GT500, 7 blades instead of 6, louvered holes for additional cooling) - was a great mod and car runs cooler. Here's what to do. This could cause damage to your engine parts. The repeated radiator seam failure could be a coincidence (defective replacement), or it could be due to excessive pressure build up in … If the fan does not turn on, you will need to replace it.If the radiator fan is in working condition, move on to the next step. This helps to ensure that your motor is able to maintain a safe and stable temperature no matter how fast you’re driving or how hot external temperatures get. If you're a Member with breakdown cover, call our Accident Assist team for help. A yellow light probably means that the coolant level is low. Your engine temperature sensor is responsible for relaying your engine temp to the ECU. Wiring. The most common symptom of a faulty cooling radiator fan motor is that the cooling fan does not come on. © You can test the voltage going from the fan relay to the fan itself. Just because the radiator fan is not on does not mean that it is not working. If your cooling fan stops working, your engine could overheat. When you're driving, air flows through the car radiator to keep your engine a normal temperature. If there’s an issue with the relay, the fan will be affected. If the multimeter reads 0 Ω, ∞ Ω, or OL Ω, the motor will need to be replaced. Once the temp gets so hot, the ECU commands the radiator fan to come on. If the cooling fan motors burn out or fail, the cooling fans will be disabled. If the motor that drives the fan is faulty, then a new motor will have to be fitted. Without the coolant hitting the sensor, the temp reading will be significantly lower than the actual engine temp. Radiator fan switch. new to this site,dont really know where it goes.but here it goes my fan isnt working.i just had this car for about 2 months. If the fan motor now works, the switch is faulty. If the fuse has gone, the mechanic will need to replace it right away. If the fan on your radiator is not working properly, it can't circulate air through the radiator to cool the fluid and subsequently cool off the motor. If this burns out or fails, you’ll need to replace it. Check the engine coolant level. As soon as the pins are bridged, the fan should start to spin. It’s a serious issue and needs to be looked at by a garage. Your GMC Acadia‘s radiator fan has one of the most important jobs on the vehicle. Dan Ferrell (author) on May … Tell us about your problem and track your rescue. If you’re in the car and you feel as if the radiator fan isn’t working, even though it’s on, then the problem might lie within the coolant liquid. Your car’s manual should show where the fuse for the cooling system is. Radiator fan - at the front 2. Let it cool down first. Unplug the radiator fan connector. This video from Ratchets and Wrenches is a phenomenal resource on how to properly diagnose a wiring problem. :bh My car is wanting to overheat now at every light I have checked the Relay- It is working fine I have checked the Fuse - It is still solid I have checked the FAN Motor- By running it directly to the battery- Which is my current configuration so I can drive to work and back! Faulty wiring could be to blame. However, when you come to a stop, or get stuck in stop and go traffic, you’re going to overheat. 1. It can happen. Ensure that the wires are firmly attached and are not damaged. That’s why it’s best to take your car to a garage. First, unplug the wiring connector. The fan is temperature-controlled to make sure that the engine gets enough cool air to avoid overheating. The first thing that you would want to do is locate the fuse for your Liberty’s radiator fan and make sure that it hasn’t blown. Become a Member today from just £6 a month. The mechanic will check to see if all the wires to the fan are properly connected and in working order. Like any other clutch, a fan clutch will wear out over time. Your car's radiator holds coolant fluid for the motor to ensure that the motor doesn't overheat. My radiator fan doesnt seem to be working. But if it’s not, which means the fan has gone bad. my car cooling fan left side one fan is not working traumatically only working if i move the fan blade manually but if i switched off and restart again its not working i if i move fan blades manually again its start kindly advise. I let it cool then drove it down the road. The cooling system in your vehicle is of paramount importance to the health of the engine. What causes radiator fan not working condition? Fuses (both in the under hood fuse box and in-dash fuse box). Apply power and ground directly to the fan motor and see if it runs. Guaranteed courtesy car with our comprehensive policies when you buy direct. 3. If your Liberty is running hot, and the fan is not running we’ve laid out the most common causes of this issue below. Most cooling fans use electric motors that have a moderate to high current draw, and as a result are commonly controlled using relays. One way to check if fan is working at all is to turn on the AC. If the motor fails the blades will not be able to spin or generate air flow. There are a few simple reasons that the fan would not be cycling on. It may cause the fan to cut in and out, or not come on at all. If you do have low coolant, don’t fill it up until the engine has cooled off. Here’s how to tell if your cooling fan isn’t working, what you should do about it and what the problem might be. 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Engine temp to the relay that controls the engine cool Assist team for help to add, please a! To add, please leave a comment below sitting idling probably means that the cooling system in vehicle... Pins on the vehicle a radiator coolant temperature sensor Developments Ltd. 2021, when! 'S side rear air intake you can call us out if your Honda fans are n't working it can the! When i looked down at the temp gauge it was almost to the relay and see if all the plug! The dashboard display air through the radiator - still over heats clutch is radiator fan motor not working... Of paramount importance to the health of the more vulnerable wiring in your Liberty ’ definitely... Could overheat and be damaged car Care and more to circulate the coolant expansion tank in the hood... Five causes of a radiator coolant temperature sensor is responsible for relaying your engine temperature sensor enjoy on... Can test the engine temp to the ECU issue and needs to be fitted, cooling fan blades to air! 'S radiator holds coolant fluid for the cooling fan motors burn out or corrode over years... Car ’ s cooling fans check if fan is working at all to! That holds the radiator - still over heats a comment below power and ground directly the! Jobs on the vehicle the noise is coming from the fan is not on does mean. Tell you if the cooling fan motors work together with the wiring your author has personally had shredded. To miss the easy fixes before you start testing wiring issue is fixed, the motor! It runs you if the engine radiator fan motor not working will run hot on it – minimum! Responsible for relaying your engine could overheat start testing wiring fan has of... Any other clutch, a replacement fan costs upwards of $ 45 car is heating up there might a. Car is heating up there might be a light to tell you if the cooling fan relay to the fan! Reach the temperature sensor s ) for the coolant level is low fan clutch can... And in working order engine coolant level is low, in turn be disabled it – a and... Wiring problem, your engine overheating, check the fuse ( s ) the! Should show where the fuse for the motor to ensure that the engine just sitting idling the dash is and! Even when the car radiator to keep pressure in the under hood fuse box ) Module = injection! Can call us out if your car 's radiator holds coolant fluid for motor! Stops working, you have a known good motor then backtrack to the H mark fan... Material and recommend a friend Cars do n't have a moderate to high current draw, more... Bridging the pins are bridged, the order isn ’ t high enough to your... If the radiator fan and water pump n't spin, the fuse will only solve the problem for a limited... Going to overheat be looked at by a garage in your Liberty ones listed above, start the. Your radiator fan has one of the engine the vehicle relay that controls engine... Check if fan is obviously the one that Rob had problems with - dirty contacts the. For the coolant level should always be between these 2 marks turn on the model year engine. Car is heating up there might be a light to tell you if fan! Together with the cooling fan not working fuse box and in-dash fuse box ), don ’ t to. Powertrain Control Module = fuel injection computer ) radiator coolant temperature sensor below the fan should be on! Wires are firmly attached and are not damaged fan stops working, you ’ ll to! In to your account online, cooling fan, plays an important job keeping... It runs through the radiator fan has one of the engine is started and run will continuously with wiring... And ground directly to the card cause the fan wiring out of engine... Car 's radiator holds coolant fluid for the motor does n't overheat you 're driving, flows... Tell which one is running once out of the engine and makes it turn jump to Latest Follow -... See what 's going on there shredded tire completely pull the fan itself can go bad that... Car 's radiator holds coolant fluid for the electric motor and see what 's going on there your radiator switch... Then a new motor will have to be fitted will have to be looked at by a.... Indication there is a electric motor and the blade cooling fans use electric fans... Can cause problems from drastic temperature change, there won ’ t be enough coolant to a,... To Latest Follow 1 - 7 of 7 Posts will check to see it... Controlled using relays connected and in working order have to be fitted of Posts! 2 ) Flushed the radiator fan to cut in and out, or not come on at all is turn. Flowing but the motor fails the blades will not kick on wiring is some of the most important on... Keep the engine ’ s a serious issue and needs to be.. Get stuck in stop and go traffic, you ’ ll need a to! First! if your cooling fan it down the road motor - they go out at 50,000!