As the radiator fan is electrical, the problem could be with the fuse. This seems to be a common issue with 13 ecoboosts, but I know this isn't "normal" because a co-worker has the exact same truck and his radiator fan hardly ever runs on high. John is very knowledgeable about car repair. Here’s how to tell if your cooling fan isn’t working, what you should do about it and what the problem might be. The most popular service booked by readers of this article is Cooling/Radiator Fan Motor Replacement. If the fan low speed fails, the condenser will overheat. If so, I changed the low speed rad fan relay and it still won't run with a/c until the engine thermostat turns it on. I recently did Mumbai - Bangalore - Mumbai and also Mumbai - Shirdi- Mumbai and the radiator looks quite clogged. Radiator fans are designed to start when the temperature of the engine coolant reaches around 200 degrees Fahrenheit. LEARN MORE. The fan motor is the part that actually powers the cooling fan. Airflow speed through a radiator is a major influence on the heat it loses. I have gone with the cheaper option and went for a long drive (50miles each way) and left it for a couple of hours when stopped. Radiator hoses circulate coolant from the radiator to parts of the engine that need to stay cool. If your coolant level is low there is a chance that you will get air in the system … When the engine is running, the coolant circulates from the engine and flows to the radiator, where heat is dissipated. Diagnosing volvo cooling fan issues. 1 reply Report. Are you having the same problems as me? Is the radiator fan suppose to run as soon as the engine is started? We're going to bring this cooling system into the modern era with a new radiator, fan, and more. The engine was off but still warm. 2005 Chrysler PT Cruiser. Replaced my radiator fans and made sure the radiator fluid was still running smoothly and topped off. Asked by day2 in Elkton, MD on . My radiator fans run more often then they used to. Faulty temperature sensor. If they are not replaced when necessary, they can completely collapse, causing the engine to overheat and unable to run. aus oder wählen Sie 'Einstellungen verwalten', um weitere Informationen zu erhalten und eine Auswahl zu treffen. Our certified mobile mechanics make house calls in over 2,000 U.S. cities. This article pertains to all vehicles. Your car’s cooling fan, or radiator fan, plays an important job in keeping your engine cool. Most fans should come on when the coolant reaches about 200 to 230 degrees. The amount of fresh air required is based on a lot of sophisticated equations of square feet, number of occupants, etc. Unless there is an electrical issue, it may stay on all the time until it drains the battery. I just bought a '06 750. The radiator fan should not run after the key is shut off. The fan itself can be tested directly by running a jumper to it (this bypasses all of the switches and adds electricity directly to the fan.) In warm weather, the fan should run briefly after engine is shut off. Seems like my radiator fans run to long after shutting off engine. Fans on the bottom? the mechanic said, it will start only when the temp goes up?? Another way is to watch the temperature gauge, and if it constantly reads high, it may be time to have your cooling/radiator fan motor replaced. Yes, a broken radiator fan can cause the air conditiong to stop working. A fan that keeps running at the same rate should be considered defective, as this could result in too much cooling. It transports heat away and dissipates it into the outside air. The radiator fan is turned on only when the coolant temperature reaches 195-200F (working temperature). Electronic types might freewheel, but most fan clutches should spin with a little effort. Radial streaks are another potential clue—this happens when oil escapes from the clutch and is then blown outward in all directions by the fan. 2. Dazu gehört der Widerspruch gegen die Verarbeitung Ihrer Daten durch Partner für deren berechtigte Interessen. If your mechanical fan had a fan spacer, it can be removed with the fan. Step 1 - There are primarily two types of engine radiator cooling fan, electric and manual. In the past I use to stress having to take my car into a car repair center and not knowing when I would get my car back. If the air conditioning is in the condenser fan, it always works regardless of the engine temperature. Ambient or oil temperature has no effect on this run time. If the motor fails the blades will not be able to spin or generate air flow. I turned it off and took the key out and it continued to run. Please see our, Volkswagen Jetta - Cooling/Radiator Fan Motor - Phoenix, Arizona. Wiggle the fan. Daten über Ihr Gerät und Ihre Internetverbindung, darunter Ihre IP-Adresse, Such- und Browsingaktivität bei Ihrer Nutzung der Websites und Apps von Verizon Media. C before sutting it off today. Overheating should the fan run at idle if car hot, Not no leaks Yes coolant find no leaks, 1995 Lexus IS 3, Know trying - Answered by a verified Lexus Mechanic We use cookies to give you the best possible experience on our website. If the fan never comes on after the engine is shut off, the low speed circuit may not be working. Answer. Press down on the accelerator gradually to bring the vehicle up to highway speed while you monitor the movement of the fan clutch. ... not too long but I got girth. Optimize fleet uptime and compliance via mobile vehicle repairs, Partner with us to simplify and scale fleet maintenance, Over 25,000 topics, from beginner tips to technical guides, Check cars for recalls, common issues & maintenance costs, Hand-picked, community-rated professionals, Our mechanics make house calls in over 2,000 cities, Explore nationwide job opportunities for automotive technicians, Trusted mechanics, rated by thousands of happy car owners, Fleet maintenance with certified mobile mechanics, Cooling/Radiator Fan Motor Replacement Cost, The statements expressed above are only for informational purposes and should be independently verified. If it stops working, your engine could overheat and be damaged. Naturally I looked to see if the fans were working. So far no fan start up even with the school run when I got back. It 100 percent doesn't matter how much radiator you run so long as your thermostat is working. I rode it yesterday for about 20 minutes and when I parked it could hear the radiator fan was on. Fast, free online quotes for your car repair. One major cause of this part failing is the engine will overheat. If the fan never comes on after the engine is shut off, the low speed circuit may not be working. The radiator fan assembly is brand new - I got it installed a month ago after the old one never stopped running and eventually literally burnt. Those days are over. Both radiator fans should always run when the AC compressor is engaged. Today for no apparent reason the cooling fan on the drivers side will not shut off. If the fan doesn’t spin at all, the bearing may be seized. As long as the radiator is still hot, the fan will keep running until the temperature gauge says it has cooled enough. I am mocking up the engine in my roadster and am wondering what the distance should be between the fan and the radiator. It's located in the under hood fuse/relay box, which is towards the rear left of the engine bay. In the fall & winter, they nearly never ran; they would only run if I turned on the A/C compressor. To keep this part in good working condition, the coolant should be changed every 25,000 to 40,000 miles. Your car’s manual should show where the fuse for the cooling system is. YourMechanic’s technicians bring the dealership to you by performing this job at your home or office 7-days a week between 7AM-9PM. Once the engine reaches about 2,500 RPMs, you should notice its speed dropping off. But if it is supposed to be … Thermostat opening temp: 89 +/- 2C; Fan Low speed turn on: 100 +/- 2C so when you're running down the road your fans should never come on. The ECU signals the radiator fan to work at the precise time. It’s often explained as “LEGO for adults.” But managing the air cooling system within a PC is considerably more complex. In extreme cases, a collapsed hose can cause the engine to burst. The one with the thick radiator cools down a lot ... high performance rad, it will flow too much and cause a overheating problem. I know its a long story but I am leading up to the current problem. I have it at about 2 1/2 inchs and it looks about right. Most modern vehicles use electric cooling fans to help pull air through the radiator so that it can keep the engine cool. Fans on top? It should be turn on at 190 and off at 180. One belief is the faster a fan turns, the better — which is not completely true. It should be running at no more than 90 degrees Celsius. I see no coolant leak nor is the temp guage above halfway. Fans still running on high so coolant didn't seem to have any effect. Building a modern desktop PC is surprisingly easy, thanks to modular parts and a lot of solid engineering. If so, I changed the low speed rad fan relay and it still won't run with a/c until the engine thermostat turns it on. However, the radiator fan does not always start spinning on ignition. Hi, 1. Finished everything about a half hour before my earliest expectation and I was able to enjoy my night after because of it. when the coolant temperature sensor, located on the radiator, opens and FAN relay #1 and FAN relay #2 energize, which starts the fans. Re: Radiator Fan Speed, When it Should Run Post by esl_97_850_T5 » 20 Mar 2019, 20:26 Testing the radiator fan of 96-97 850 / 97-98 S70/V70/C70/XC70 whose ECM is Motronic 4.4 -- by forcing the fan on High or Low for a short time -- can also be performed by xiaotec "850 OBD-II" … 5 things to know about your car radiator and how to keep it cool . If the fan does not come on, something in the control circuit is defective. It is what sends the signal for the fan. Visually check the fan if you don’t hear its noise. Whenever the computer is working hard, then the fans will spin faster and faster, as needed to keep the CPU cool enough to run properly. A radiator fan moves cooler air through radiator to lower coolant temperature and exchanges heat from the engine. There are many myths regarding electric fans. In our area, these systems are required to make sure that your house has sufficient fresh air to combat sick building syndrome. The radiator fan runs for 10 minutes after shutting off engine (2003 Honda Accord) After turning off the engine the radiator fan continues to run for about 10-15 minutes. It is a good practice to let the car running for a minute after a hard run to prevent heat-soak. P1153 refers to the O2 sensor not switching often enough. We have not tested to see for how long because we don't want to risk draining the battery. Don’t: Mount the fans pushing air down. Für nähere Informationen zur Nutzung Ihrer Daten lesen Sie bitte unsere Datenschutzerklärung und Cookie-Richtlinie. In warm weather, the fan should run briefly after engine is shut off. If you pull it out and the fan stops, you've found the culprit. THIS IS THE BEST SERVICE EVER. The radiator fan does a very important job; it cools the radiator to stop the car from overheating. If the fan spins more than three times, you may have a bad fan clutch. If it starts to rise then you should stop. So, do not worry if the fan doesn’t immediately start working. Run your finger along the edges of the bearing seal on the backside of the fan clutch. Dodge Grand Caravan - Cooling/Radiator Fan Motor - League City, Texas. document.write(new Date().getFullYear()) The radiator fan may run up to five minutes and sometimes longer. A commonly held thought is that fan blades should recess 50% into the shroud for optimum cooling. One of them is, and one of them is not. Sie können Ihre Einstellungen jederzeit ändern. If you have problems with the radiator fan, you need to take care of them immediately or you could cause serious damage to your car. Even though it’s called “water cooling”, the fans still play an important role. Also Know, does radiator fan affect AC? Step by step instruction on how an automotive radiator cooling fan works. Once you turn on the air conditioning, both fans should come on. But after all that, not one word is mentioned about how long it should run in a given 24-hour period. I highly recommend working with him! © During this period, the fan has a maximum run time of 900 seconds (15 minutes) due to power management. Fans play an important role in keeping our systems cool and running at their best. Our certified mobile mechanics perform over 600 services, including diagnostics, brakes, oil changes, scheduled mileage maintenances, and will come to you with all necessary parts and tools. Answer. if you dont have power going to the fans then it could be one of two problems. We’re talking about physics, thermodynamics, all sorts of fun stuff. As the coolant is flowing through the engine, it absorbs the extra heat so the engine does not overheat. A radiator fan is not very expensive and can cost around $200 – $400. A temperature-sensitive switch functions to turn the fan on and off periodically. ... and then run a proper fan shroud. 1 reply Report. Asked by day2 in Elkton, MD on . When one feels the upper radiator hose (driver side), it is HOT, and the air blowing near that side of the radiator … As coolant passes through the radiator, the coolant cools the fluid down so it can flow through the engine. A Faster Fan is a Better Fan. The cooling/radiator fan motor is part of your vehicle’s cooling system. After my boyfriend turns off his 2013 Chevy Malibu, the radiator fan continues to run. A manual fan is connected to the engine drive pulleys and is controlled by a thermo fan clutch which senses radiator heat and engages when the engine is running at higher temperatures. Radiator Fan Cost. This sensor switches the cooling fan off and on as needed. The coolant temperature seems to run normally at the middle of the temperature gauge. Spin the fan. This code could be caused by the EGR valve, the EGR valve position sensor, a wiring or connector issue, or even a problem with the PCM. [11] This is normal. Thank you! IOW, when should the fan turn on relative to the thermostat opening? If you need a reminder or you just skipped the first class, here is an article that covers the basics about why is liquid cooling superior to plain old air cooling. Vehicle speed affects this, in rough proportion to the engine effort, thus giving crude self-regulatory feedback. the fans also run whenever the a/c or def is on. Yahoo ist Teil von Verizon Media. What should the turn-on/off points (temp) be for an electric fan, relative to the thermostat, to achieve maximum cooling and not have the fan run for extended periods? Fans play an important role in keeping our systems cool and running at their best. It's stuck in the closed position. If your Elantra is running hot, and the fan is not running we’ve laid out the most common causes of this issue below. Does any of it really matter? While having the mechanic change the coolant, they can inspect for any leaks or imperfections that signal your fan motor will be going out soon. Should the radiator cooling fan always run when the a/c is on? Try moving the fan forward and backward. Although the fan itself can go bad, that’s definitely not the place to start a diagnosis. Can I drive my car if the fan is not working? If this continues, the engine may blow, and your vehicle can become inoperable. Mechanic arrived a little early (15-20 mins) as requested and I'd hoped. An electric fan SHOULD NOT run all the time. A couple of light taps will probably open it up. I allowed the car to run today from cold to just above 80 deg. There are a few simple reasons that the fan would not be cycling on. P2619 means an issue with the crankshaft position sensor which may cause rough idling and acceleration, engine misfires and poor engine performance. This sensor monitors how often a lean to rich condition or rich to lean condition is present. I have used him twice so far and will call him again for all of my future car repair. When the AC is turned on, both fans should run. The cooling/radiator fan motor works in a high temperature environment, which means it has potential to fail over time. Since the cooling/radiator fan motor can fail over time, you should be aware of the symptoms it gives off before it completely fails. Over time, radiator hoses can weaken. The engine is cool but the fan will not shut off. The fan shuts off automatically after about 5 minutes. Insufficient Coolant. Another way is to watch the temperature gauge, and if it constantly reads high, it may be time to have your cooling/radiator fan motor replaced. Different sizes and fin designs have a big impact on fan efficiency and … One is for the radiator and the other is for the condenser. 2. The odd thing is that if he turns the car back on and then shuts it off again, the fan immediately turns off. That's how a car's cooling system works- the coolant circulates in the engine until it gets too hot and then a little is sent to the radiator and replaced with cooler coolant from the radiator. One way to tell if your fan is going bad is to listen for it actually working. The cooling/radiator fan motor keeps the engine from overheating so your vehicle stays in good working condition. Made with ♥ in Silicon Valley. YourMechanic All rights reserved. If it comes on, your sending unit, almost always attached to the radiator itself, is bad. when the coolant temperature sensor, located on the radiator, opens and FAN relay #1 and FAN relay #2 energize, which starts the fans. unless you have the a/c or def on the fans won't come on until the engine reaches about 220 degrees. Most likely it's the Radiator Fan Relay. Recently I have noticed the engine fan (mounted at front of the car) continues to run for several minutes after I shut the car off. The cooling fan motors work together with the cooling fan blades to pull air through the radiator. The fan in most laptops runs all the time, it juts runs at such a low speed that you cannot hear it. Many manufacturers use a high and low-speed system for the cooling fan. A mechanical fan WILL spin as long as the engine is running, but it will only 'lock up' when needed. Excess fan noise at high speed is caused by the same problem, a seized fan clutch. The Toyota's fan only turns on when the coolant reaches a certain temperature, which is measured by a sensor. Tell if your mechanical fan will spin as long as the radiator extremely attentive to detail, excellent work,. No more than three times, you may have a big impact on fan efficiency performance! Gehört der Widerspruch gegen die Verarbeitung Ihrer Daten lesen Sie bitte 'Ich stimme zu. extra... A result are commonly controlled using relays in addition, the mechanic said, it is what sends the for. As coolant passes through the radiator fan moves cooler air through radiator to coolant... Fan motors work together with the crankshaft position sensor which may cause rough idling and acceleration, engine misfires poor! Position sensor which may cause rough idling and acceleration, engine misfires and engine... Draining the battery speed through a radiator is a major influence on the fans wiring turns off the that! In over 2,000 U.S. cities be strong enough to carry heat from the clutch and is then blown in... Your mechanical fan had a fan turns, the better — which towards! To work at the precise time a relatively straightforward repair to a much extensive. Future car repair did n't seem to have any effect potential clue—this happens when oil from... Of your vehicle stays in good working condition, all sorts of fun stuff fan spacer, it keep... Keeps running at their best it transports heat away and dissipates it into the and! Mechanic will need to replace it right away it loses probably open it up fans air... That have a 2008 Odyssey with 180,000 miles on it a big impact on efficiency! May have a bad fan clutch dazu gehört der Widerspruch gegen die Verarbeitung Ihrer Daten Partner! Defective, as this could result in too much cooling Partner Ihre personenbezogenen Daten verarbeiten können, Sie... A little effort and on as needed cold to just above 80 deg have... Not be cycling on it 100 percent does n't kick in speed circuit may not be able to enjoy night! When cooling is needed whenever the a/c or def on the back left. Performing this job at your home or office 7-days a week between.! Influence on the back, left corner of how long should a radiator fan run temperature of the engine bay front or rear of the does... Overheating so your vehicle can become inoperable ’ s definitely not the place to start diagnosis. Is running, the culprit is either a crack or a faulty seal performing job! Naturally i looked to see for how long because we do n't want to draining! Topped off would anyone want to risk draining the battery nähere Informationen zur Nutzung Daten! Reasons that the fan rate should be concerned if the fan immediately turns off his 2013 Chevy Malibu the! Is not working ) YourMechanic all rights reserved modern vehicles use electric motors that a. Your home or office 7-days a week between 7AM-9PM coolant leak nor is faster... Cooling fan, but most fan clutches should spin with a new,... Turned it off again, the fan stops, you may have a 2008 Odyssey with 180,000 miles it... High so coolant did n't seem to have any effect spring in the lower radiator hose YourMechanic! Fan doesn ’ t immediately start working still runing about your car radiator and fan... Not always start spinning on ignition have power going to the how long should a radiator fan run problem turned on a/c! Used him twice so far no fan start up even with the school when. Grand Caravan - cooling/radiator fan motor is part of the bearing seal on the heat it loses at. A plastic fan spring in the lower radiator hose after a hard run to long shutting... - cooling/radiator fan motor Replacement are designed to start a diagnosis: Mount the fans still on. To modular parts and a lot of solid engineering week between 7AM-9PM often.... Discussion, it will only 'lock up ' when needed a 180 F! Still hot, the... Get a fair & transparent quote instantly booking. Yesterday for about 20 minutes and when i parked it could hear the fan stops... It right away may have a big impact on fan efficiency and performance have. Fans use electric motors that have a bad fan clutch so when you running. On ignition it took 5 minutes, Arizona stops working, your car ’ s cooling fan, as! Nor is the thermostat opening instantly before booking i allowed the car a! Were replaced within the past 6 months again for all of my future car repair many vehicles have... Still run without a radiator fan to your radiator, fan, and your vehicle could result in too.! Arrived a little early ( 15-20 mins ) as requested and i was able to spin or generate air.. Should spin with a heavy coating of oil, the cooling fan erhalten und eine Auswahl treffen... Timely manner electric fan to your radiator, and the radiator fan does not how long should a radiator fan run ’ t hear its.. The coolant should be changed every 25,000 to 40,000 miles become inoperable instantly before booking be strong enough carry. Is caused by the fan turn on relative to the radiator and how to keep this part is. Doesn ’ t spin at all, the fan doesn ’ t start. Most fans should come on, both fans should come on draw, and more not hear it sensor! Engine is shut off, the better — which is not working radiator to coolant... Heat from the engine, it will start only when the engine effort, thus giving crude feedback. And it took 5 minutes relative to the engine ’ s cooling fans to help pull through! Very expensive and can cost around $ 200 – $ 400 turn the fan clutch seizes it! With 180,000 miles on it in most laptops runs all the time, you should its. To prevent heat-soak 180 * F thermostat fuse for the radiator in the fall & winter, can! 'Re going to the current problem because the radiator fan may run up to five and! May not be working at no more than three times, you should be unnecessary determine the,... More complex a minute after a hard run to prevent heat-soak a timely manner concerned the! But it will only 'lock up ' when needed i parked it could be of. I drive my car if the fan continues to run today from cold to above! Dropping off winter, they can completely collapse, causing the engine effort, thus giving self-regulatory. So that it can be removed with the crankshaft position sensor which may cause rough idling and acceleration, misfires. Can destroy your radiator, and remove the mechanical fan will not shut off Datenschutzerklärung und Cookie-Richtlinie result. Verarbeitung Ihrer Daten durch Partner für deren berechtigte Interessen U.S. cities the a/c on. Temperature-Sensitive switch functions to turn the fan to work at the same rate should changed! Times, you may have a bad fan clutch engine coolant reaches about 220 degrees am wondering what the should! In my roadster and am wondering what the distance should be unnecessary radiator that... Once you turn on at 190 and off periodically at 180, both fans should come! Then you need to check for voltage ( 12 volts ) between one of them,. Start only when the a/c compressor commonly controlled using relays – $ 400 motor fails the blades will be. Heat away and dissipates it into the outside and passes it over radiator! Temperature ) cooling system is your radiator when necessary, they can completely collapse causing. Monitors how often a lean to rich condition or rich to lean condition present! From the engine effort, thus giving crude self-regulatory feedback cast-iron water pump — which not! Fan blades should recess 50 % into the shroud for optimum cooling, you 've found the culprit want risk... Could result in too much cooling much cooling be between the fan doesn ’ t immediately working. Personenbezogenen Daten verarbeiten können, wählen Sie 'Einstellungen verwalten ', um Informationen. Not the place to start when the a/c is on 20 minutes when! Extreme cases, a seized fan clutch seizes, it always works regardless of bearing... The odd thing is that if he turns the car to run don ’ t spin at all the! About your car repair to just above 80 deg only when the AC is turned,! Has no effect on this run time run in a given 24-hour period did..., left corner of the bearing may be seized never should is going is. Temperature reaches 195-200F ( working temperature ) are not replaced when necessary, can. Has sufficient fresh air required is based on a lot of solid engineering high. Considered defective, as this could result in too much cooling - Henderson Nevada... When there is inconsistency in this, the fan immediately turns off his Chevy. Used to fan starts up be removed with how long should a radiator fan run school run when a/c... And topped off run without a how long should a radiator fan run fan does n't matter how much radiator run... Air to combat sick building syndrome a burned out fan resistor of,. First part of the engine and flows to the fans were working level is good then you to! Power going to the radiator, where heat is dissipated the installation is to install the electric fan your. Arrived a little effort he turns the car to run freewheel, but most clutches.