2. 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. 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. Your car's radiator holds coolant fluid for the motor to ensure that the motor doesn't overheat. 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. Your Jeep Liberty‘s radiator fan has one of the most important jobs on the vehicle. The radiator fan itself may be faulty. There are many reasons why your Jeep Liberty’s radiator fan is not working. However, when you come to a stop, or get stuck in stop and go traffic, you’re going to overheat. Your author has personally had a shredded tire completely pull the fan wiring out of his vehicle. 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. 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. 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. It can happen. It may cause the fan to cut in and out, or not come on at all. 2) Flushed the radiator - still over heats. Find a trusted garage and book, hassle-free, with Smart Care. However the parking lights will not light up, which is wierd since the blinkers work, hmm. 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. Your Liberty’s radiator fan will not kick on. One way to check if fan is working at all is to turn on the AC. Faulty wiring could be to blame. But, you don’t want to miss the easy fixes before you start testing wiring. Find help to manage your current loan or apply online for additional borrowing. Once you have a known good motor then backtrack to the relay and see what's going on there. I think there is a clutch between the electric motor and the blade. 3. Log in to your account to book lessons, access your online learning material and recommend a friend. The fan relay controls the power to the cooling fan. Adding coolant to a radiator dry enough not to trigger the engine temp sensor can cause problems from drastic temperature change. Log in to see your policy documents, keep tabs on renewal dates and check your cover level. There are usually two marks on it – a minimum and maximum level mark. The radiator fan is obviously the one that Rob had problems with - dirty contacts on the sensor. 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. Coolant Level. If there is power flowing but the motor doesn't spin, the motor may have burned out. If not, you have a fan or relay problem. It’s a serious issue and needs to be looked at by a garage. 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. If your Liberty is running hot, and the fan is not running we’ve laid out the most common causes of this issue below. Book hassle-free with Smart Care and get a 1 year guarantee. 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. Unless the wiring issue is fixed, the fuse will blow again. Here are some more specifics: The fan motor is controlled by the following important components. If the fan is not working even when the car is heating up there might be a problem with the wiring. If everything else seems to be fine, the fan clutch is the most likely cause of radiator fan … Many modern cars don't have a temperature gauge, but there'll be a light to tell you if the engine's overheating. I let it cool then drove it down the road. 1 - 7 of 7 Posts. If this burns out or fails, you’ll need to replace it. If the engine coolant level isn’t high enough to keep pressure in the engine it will run hot. 92 RS Radiator fan not working. I went to the car wash today and left it ideling. The radiator fan motor is controlled by the PCM and a radiator fan switch. Once the temp gets so hot, the ECU commands the radiator fan to come on. 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. If the motor that drives the fan is faulty, then a new motor will have to be fitted. If one or more fuses are blown and the replacement fuse blows as well, check for fan blades for debris and ease of rotation. The mechanic will check to see if all the wires to the fan are properly connected and in working order. Your car’s manual should show where the fuse for the cooling system is. If so, a replacement fan costs upwards of $45. Unplug the radiator fan connector. The fan wiring is some of the more vulnerable wiring in your Liberty. Budget for your trip and spend only what you've loaded on to the card. On most modern cars, the cooling fan is controlled by the Engine Control Unit (ECU) which gets a signal from the coolant temperature sensor. Automobile Association Developments Ltd. If the multimeter reads 0 Ω, ∞ Ω, or OL Ω, the motor will need to be replaced. Wiring. If it stops working, your engine could overheat and be damaged. Is the noise is coming from the fan motor area ? Check for any damage and clean the connector. They are designed to only run when needed. 6. There are a few simple reasons that the fan would not be cycling on. Radiator fan switch. If the motor that drives the fan is faulty, then a new motor will have to be fitted. You can test the voltage going from the fan relay to the fan itself. You’ll need to locate and test the engine temp sensor. According to the mechanic there's power to the motor, but it doesn't run. The cooling fan motors work together with the cooling fan blades to pull air through the radiator. It was fine. There is a electric motor to circulate the coolant next to the thermostat. If there’s an issue with the relay, the fan will be affected. Tell us about your problem and track your rescue. Most modern vehicles use electric cooling fans to help pull air through the radiator so that it can keep the engine cool. If the fan motor now works, the switch is faulty. :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! The coolant level should always be between these 2 marks. Your car’s cooling fan, or radiator fan, plays an important job in keeping your engine cool. 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. Your engine temperature sensor is responsible for relaying your engine temp to the ECU. Of all the ones listed above, start with the coolant level, then check the fuse. The fan is temperature-controlled to make sure that the engine gets enough cool air to avoid overheating. To check the level, look for the coolant expansion tank in the engine bay. 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 it’s not working, the fan won’t turn on when it needs to, which means the engine might overheat. If you’re moving, air will flow over the radiator and cool it down. As soon as the pins are bridged, the fan should start to spin. The mechanic will check to see if all the wires to the fan are properly connected and in working order. If the cooling fan motor burns out, the cooling fans will then, in turn be disabled. If you're a Member with breakdown cover, call our Accident Assist team for help. Guaranteed courtesy car with our comprehensive policies when you buy direct. 2. My radiator fan doesnt seem to be working. A car radiator fan has one very important job — to make sure that as much air as possible is drawn across your engine’s radiator. Through our vehicle checks and approved dealer network, AA Cars helps you buy with confidence. You can call us out if your car won’t start or you think the engine's overheating. If bridging the pins on the switch does not spin the motor, check the loom for voltage. Here is how to test if the fan is functioning properly: 1. Depending on the model year and engine, the location varies. Which makes sense. If you do have low coolant, don’t fill it up until the engine has cooled off. 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. Here’s how to tell if your cooling fan isn’t working, what you should do about it and what the problem might be. Radiator fan - at the front 2. If you have had problems with your engine overheating, check your radiator fan and water pump. You might also see a warning message on the dashboard display. If it does, this could point to a faulty switch (or airlocked radiator / low coolant / jammed thermostat). The fan clutch is the assembly that holds the radiator fan to the engine and makes it turn. It is only when I am at idle. 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. Hello all, my radiator fan is not working when it warms up. If the radiator fan is not working, it’s a serious problem. A safe alternative to carrying cash abroad. © Reply. This could cause damage to your engine parts. Good luck!! Your GMC Acadia‘s radiator fan has one of the most important jobs on the vehicle. 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. A wiring issue. Honda Fans not working? If the motor fails the blades will not be able to spin or generate air flow. A red light means that your engine's overheating. 3) There is a radiator coolant temperature sensor below the fan on the passenger side. Check the engine coolant level. Your mechanic will look for one these common cooling fan faults: As the radiator fan is electrical, the problem could be with the fuse. 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. What causes radiator fan not working condition? When I popped the hood I noticed that the fans were not working. 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 2. Log in or register to manage your account online, Cooling fan not working? This should cut in after 20-30 mins of the engine just sitting idling. Bad Radiator Fan Motor. A yellow light probably means that the coolant level is low. 2021, Even when the unexpected happens. Become a Member today from just £6 a month. 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. Most cooling fans use electric motors that have a moderate to high current draw, and as a result are commonly controlled using relays. Apply power and ground directly to the fan motor and see if it runs. Ensure that the wires are firmly attached and are not damaged. But, there won’t be enough coolant to reach the temperature sensor. You need to inspect all the wiring leading into and out from the radiator fan. And if it has stopped working, you’ll need a professional to repair it for you. But if it’s not, which means the fan has gone bad. DO this easy check First!If your Honda Fans aren't working it can be easy repair. The cooling fan motors work together with the cooling fan blades to pull air through the radiator. There are springs within the fan clutch that can wear out or corrode over the years. If you're thinking about changing your car, giving your home a new lease of life, or just want to consolidate your borrowing – a loan with us could help. There are five causes of a radiator fan not working condition Blown fuse — electric radiator fans. If it is blown, replacing the fuse will only solve the problem for a very limited period of time. Dan Ferrell (author) on May … 1. It is the last line of defense between you and an overheating engine. My radiator fan wont spin! If a red or yellow temperature icon lights up on your dashboard, you should stop as soon as it’s safe to do so. Jeff . Fuses (both in the under hood fuse box and in-dash fuse box). See Contact Test in Step 1. If the radiator fan is not working, it’s a serious problem. PCM (Powertrain Control Module = fuel injection computer). 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. The most common symptom of a faulty cooling radiator fan motor is that the cooling fan does not come on. Enjoy discounts on restaurants, days out, car care and more. Just because the radiator fan is not on does not mean that it is not working. 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. The fuse under the dash is good and the motor is also good. Although the fan itself can go bad, that’s definitely not the place to start a diagnosis. If it’s scraping, wobbling, or grinding, it could indicate that the fan motor and fan blades are no longer connected. Here's what to do. Jump to Latest Follow 1 - 7 of 7 Posts. Download the app to report and track a breakdown quickly, find Member benefits near you, and more. Retired Ford Mechanic told me that it is usually the fan motor - they go out at about 50,000 miles. Let it cool down first. Long-term exposure to heat, vibration, moisture, and corrosion can cause connections to go bad, or wiring insulation to become brittle and flake off, leaving wires exposed. After that, the order isn’t so important. That’s why it’s best to take your car to a garage. 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. This video from Ratchets and Wrenches is a phenomenal resource on how to properly diagnose a wiring problem. 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. Check the fuse(s) for the electric radiator fans. 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. They are designed to only run when needed. The most common symptom of a faulty cooling fan motor are cooling fans that do not come on. 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. If it does not, check to see that there is current flowing to the switch by using a … 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. The wiring harness itself can go bad. If the motor fails the blades will not be able to spin or generate air flow. The cooling fan relay is the relay that controls the engine’s cooling fans. 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. The headlights and blinkers in the front work. When I looked down at the temp gauge it was almost to the H mark. It is possible that a wire has worn out due to heat and needs replacement. If the fuse has gone, the mechanic will need to replace it right away. First, unplug the wiring connector. (IT works) Radiator fan motor relay. Just because the radiator fan is not on does not mean that it is not working. Without the coolant hitting the sensor, the temp reading will be significantly lower than the actual engine temp. If it is getting 12+ volts, the fan should be coming on. Something wrong with the fan motor. It may cause the fan to cut in and out, or not come on at all. The repeated radiator seam failure could be a coincidence (defective replacement), or it could be due to excessive pressure build up in … If there is anything that you would like to add, please leave a comment below. If the cooling fan motors burn out or fail, the cooling fans will be disabled. When you're driving, air flows through the car radiator to keep your engine a normal temperature. Run jumper wires between the connector's two electrical terminals. Disconnect the wiring plug and both electric fans should start when the engine is started and run will continuously with the engine. Faulty wiring could be to blame. Like any other clutch, a fan clutch will wear out over time. Save Share. The cooling system in your vehicle is of paramount importance to the health of the engine. Engine bay fan - at driver's side rear air intake You can easily tell which one is running once out of the car. If your cooling fan stops working, your engine could overheat. 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