one will come on (if not broken) then wait (keep @ 1500RPM) 5min or till temp Gauge is all to normal approx. Problems with Cooling Fan in 2016 F150. At highway the temp is around 90-95 C (194-203 F). How long does a radiator fan take to turn on? That’s because … With this in mind they decided that the fan should preempitively come on any time you use your AC. Posted by dealerofdeat on Apr 30, 2012. 1995 c4 corvette. IF A/C is cooling ok and engine isn't overheating... No problem!! The first is based on your engine's coolant temperature. The most common symptom of a faulty cooling fan motor are cooling fans that do not come on. Turned the car on and left it running for a bit. You can ground the oil temp sensor wire and the oil light and fan should come on. 6 comments. Should the radiator cooling fan always run when the a/c is on? A temperature-sensitive switch functions to turn the fan on and off periodically. When should the passenger side radiator cooling fan come on. The answer should be in your operators manual as to what temperature a fan or fans should come on. and test the cooling fans operation should cost an hour or less of labor. Why would they turn on when cooler temps... Was he just being an idiot? 601 Posts #5 • Jun 30, 2013. Discussion Starter • #1 • May 8, 2013. When you set your fan to “ON,” you're telling it to keep running 24 hours a day, 7 days a week, regardless of the heating or cooling setting. If this connection went bad on its own, the high temperature … The fans operate when the water temperature get to 180º. Always use a 50/50 mix and distilled water if you mix your own full strength. Anyhow they temped all the lines (air water etc) when it was hit and said all temperatures were fine and the coolant system was okay. They will only come on under two circumstances; first, if you have the ac or defrost going (ac will be on) then the fans should run. How do you test a coolant temperature sensor? Beside above, should cooling fan come on when AC is on? The cooling fan in a Toyota has a relay to regulate when power is provided to the fan. How much does it cost to fix radiator fan? I have put just over 1000 miles on this bike and I have never seen the fan come on. My car has been running hot. Most fans should come on when the coolant reaches about 200 to 230 degrees. If the light comes on and no fan either the fuse is bad or the fan control unit (which is a little black electrical box under the front fender that costs about $165). 129 people found this helpful. It WILL lead to problems. How much does it cost to play a round of golf at Augusta National? the fan only comes on when i turn on the heater. Keeping the fan on creates a more even distribution of heating and cooling, circulating the air if you have cold or hot spots in … Asked by day2 in Elkton, MD on . There should be a thermo switch on the radiator, which tells the cooling fan to activate, in conjunction with the cooling temperature sending unit...so you need to verify that the cooling fan (and there may be 2, one for general cooling, the second for A/C activation) is coming on when your temperature, approximately, rises above halfway. So, The fan runs mostly at idle or low speed when the engine is at normal temperature. If you're not using AC, the fans run at low speed when temp gets to around 210 Posted on Sep 23, 2017 Helpful 0 They should only come on when ac/defrost is selected or when engine temp rises in slow/idle situations. or all the time? Hey All, Can someone answer for me: [2002 Focus SE wagon, 2.0 Zetec] I'm having an engine overheating issue, and cooling fans are not turning on (I think). A running engine generates heat. I've never seen it running but figured it wasn't hot enough - but I saw the temp get up to like 98c the other day and it wasn't going - is it broken or will it come on later?? Join Yahoo Answers and get 100 points today. This will require a wiring diagram. How long does it take for a car to cool down after overheating? Does Hermione die in Harry Potter and the cursed child? Check that first, refill if necessary, burp air pockets from the cooling system. The acceptable range for an engine to run at sits between 195 degrees and, Connect the black lead of the meter to the body of the cold, Depending on the wiring setup of the vehicle, this may. he mentioned if the two fans right by the radiator weren't running it would cause problems. 2011 Honda Pilot Suv What cause the Steering wheel to shimmy? The primary fan kicks in at 108 C (~226 F). My temperature gauge has never ever been high but these fans aren't really turning on. Both radiator fans should always run when the AC compressor is engaged. it has nothing to do with the outside temperature. If they won't run with the ac, have it fixed. Alex 3. What are the signs of a bad temperature sensor? You may have a fan issue or no power to the fans. Mark helpful. If the relay shorts internally, it may cause power to be permanently switched on, which will cause the fans to run at all times. What is the poem coming by Philip Larkin about? McConnell: $2K stimulus checks ‘socialism for rich’, Neanderthal gene offers protection against COVID-19, This might be the most bizarre punt you'll ever see. Bought the bike used and this is the first season. By the right foot peg you should see a wire coming out from the middle of the motor, follow that up to the connector and ground it. It is what sends the signal for the fan. When your driving down the motorway lots of air flows through the rad cooling down the engine so the fan is not needed. Answer. Any time the coolant temperature rises to higher than normal levels, the fan will start and continue to run until coolant temperature returns to a normal range. Use the volt meter to test if there is power to the wires. Soldier, it is very unlikely that your fan would come on after a few hours of riding; even on a hot day. July 04, 2015. The fan or fans should run when the coolant temperature in the radiator is above the temperature of the thermostat for your vehicle. It also runs very frequently. How do you think about the answers? New booze tariffs about to take effect, NBA player gives the finger to a traumatic year. save hide report. Radiator fans are designed to start when the temperature of the engine coolant reaches around 200 degrees Fahrenheit. If the belt/viscous clutch fan is moving enough air (assuming your car has auto transmission), electric fan won't run. also when the A/C head pressure hit the same. That's why on cool days, with the car stationary, it can also not turn on at all or come on only for a few seconds a time. Cooling fans stay on at all times. Can you still be a mechanic if you don't know much about cars? Get your answers by asking now. Typically around 220 or so but with the ac on they should come on sooner and more often. When this relay goes bad -- due to coil failure or excessive resistance -- the fan cannot receive its prescribed amount of electricity and will either work slowly or not at all. Should I repair replace or reprogram my engine computer to make the cooling fans run when the AC is off otherwise the car overheats On a very hot day, they may run for some time after the engine has been shut off. You turn on the air and set coldest hold throttle @ 1500 RPM and have an assistant watch the fans . Watch your temperature gauge – don't allow the car to overheat. Usually a bad or failing cooling fan motor will display a few symptoms that can alert the driver of a potential problem that should be serviced. At what temp should cooling fans start? - 2015 Dodge Challenger R/T 5.7..What temperature should the factory engine cooling fan come on? The engine cooling fan will only come on when needed when the engine gets to about 100c. If the coolant level in the radiator is low, that can cause overheating inside the engine without the radiator fans running. They won't run as much in cold weather, but will be absolutely necessary come spring time. The answer should be in your operators manual as to what temperature a fan or fans should come on. If you allowing your engine to sit and idle for a while, (without moving), then it might come on. It will also turn the fan off once the engine has cooled to under 200 degrees. On older vehicle models, just wait about 15 to 20 minutes for the engine to reach operating temperature. I'm wondering when the cooling fan should come on. The new center of Trump's political world: Palm Beach, Biden certification in Congress likely to be contentious, Cheers! Cooling fans do not come on. Got a q - at what temp should the cooling fan come on? pushrod on . We use cookies to give you the best possible experience on our website. Coming on right after the truck is started. If the system is full of coolant and water and is under pressure when hot, then you will not boil over until the internal temperature if the engine reaches maybe 250F. The auxiliary fan is attached to the radiator upper crossmember behind the radiator. If the cooling fans are staying on at all times, this is another (less common) symptom of a possible problem with the cooling fan relay. You can sign in to vote the answer. Mark helpful. When should the cooling fan come on? Why can't John Calipari consistently win at Kentucky? In … Writer Bio. 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. The electric radiator cooling fan assembly is controlled by a thermoswitch located in the side of the radiator. Accordingly, how do I know if my cooling fan is bad? 1 fan is air condition,the other is radiator cooling that only comes on when coolant gets above normal,mainly idleing in traffic etc. Asked By: Prudence O toole | Last Updated: 18th February, 2020, Too Hot. The fan will then cycle on and off as needed to maintain the proper coolant temperature. I have a 98 sunfire. Popular Answer . Engine Cooling Fan. Sometimes just one fan will operate if the water temperature dictates. 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. Does the coolant temp sensor control the fan? 1,410 Report; fallbrk answered 6 years ago Fan does not come on engine gets hot. Same here, can't tell you the last time mine was on. Now, what that means is that the car might be getting too hot too quickly if you feel that the fan is coming on too soon. (1/9) 7/26/14 1:29pm. DO THESE FANS TURN ON ONLY IN WARMER WEATHER? 1 reply Report. Author has 1.8K answers and 2.7M answer views Many cars use an A/C pressure switch which, as well as a maximum/minimum cutoff, will turn on the cooling fan if the system pressure rises above a set point. I've got a -94 Conv LT1. At higher coolant temperatures, the switch closes to start the cooling fans. Extra cooling is not needed when a cold engine is first started; so the engine cooling fan does not come on until the engine reaches normal operating temperature. This thread is archived. 63 people found this helpful. "Honest Question" There is an A/C Condenser that comes on & stays on with the A/C Switch On and there is a Radiator Fan that Cycles as the engine Heats & Cools, Should come on between 185 & 200 Degrees. If it reaches a certain point, the fan comes on to cool it off. Turned out it was just low coolant as none had been added since December 2009 and I live in las vegas (HOT WEATHER?). Connect one-on … How can you increase the water holding capacity of sandy soil? Congress overrides Trump's veto of defense bill, How North Korea's Kim marked the new year. Just be sure to keep your hands away from the fans, as … if not Have checked by A shop that has shop key/All-data and can look up the spec. Determine whether your radiator fan is manual or electric. I'm assuming it is because it is cool here but would like to be sure. If the fan does not come on, something in the control circuit is … 41). I ask because recently I took my 2001 2wd rav4 in as it made a running water noise under the dash when starting. share. The trigger is the thermostat in the radiator of your vehicle. July 04, 2015. Where does what goes around comes around come from? The cooling fan should cut in automatically and the temperature gauge drop back to normal. Cooling fans only come on when the ac is running 4 Answers. Problem with Silverado compass and ambient temp. ? Just be sure to keep your hands away from the fans, as they could come on if certain conditions exist , even with the engine turned off. Ask a mechanic for answers ASAP. A dishonest mechanic? Does it really cost only $150 for a shop to change spark plugs? Why does my radiator fan come on when I start my car? Mine has not come on yet. The engine temperature should trigger the fan to turn on. Then, the fan should come on. How do you stretch a fence that has come along? 4 stroke smokes a lot only on start up. . Remove fan retaining screws from radiator upper crossmember (Fig. Should either of these parts fail – the thermostat or the switch – your radiator fan will not turn on or off … Click to see full answer Just so, what temp should car fan kick in? On vehicles with air conditioning, The cooling fan relay is activated and the fan operates. It may take a few seconds, but they should come on. - Answered by a verified Ford Mechanic. Probably around 190 degrees. Most electric fans will not come on until the temperature switch for the fans reaches a preset temperature of maybe 200F. When ever the air-conditioning is used, regardless of engine coolant temperature, the auxiliary electric cooling fan operates. If the compressor is running long enough to build heat in the high side of the system, and the cooling fans don’t turn on, I would begin finding the fan relays and add power to the appropriate circuit to see if the fans turn on at all. Set your air conditioning to the MAX setting and turn it on. Copyright 2020 FindAnyAnswer All rights reserved. When you run the A/C the fans will come on sooner since the A/C condensor coil is in front of the radiator and this heats up the whole engine faster. I have a 2016 F150 XLT. I've put my Mini dashboard computer in to test mode and got it to display the water temperature on the display. Where does bad luck comes in threes come from? Your air conditioning creates extra work, and heat, for yur engine. Auxiliary Electric Cooling Fan Removal . This is linked to a thermostat and works much like your home’s HVAC system. To check an electric radiator fan, start the car and let it get up to the temperature where the fan normally kicks on. Hi SV650ers! if i don't run the heater then the car overheats and i start to lose engine coolant. Many cars will not have the radiator fan turn on until the engine and outside temperatures are very hot and only then if you are driving around town when there's not a lot of air flowing through the radiator. If you are moving around 35-70 MPH then there's anough air flow through the radiator to keep the engine cool without the fans coming on. What temperature should the engine cooling fan come on? Can you get drunk off one Mike's Hard Lemonade? 2005 Chrysler PT Cruiser. Temperature will often determine the time that a radiator fan starts up. To check the temperature at which the fan comes on, turn the A/C off and keep the engine running until it reaches normal operating temperature. Have Ford questions? No, only comes on when the coolant is too hot. Leave it idling at home and keep an eye on the temp gauge the fan should cut in then after a few mins turn back off. Auto-Dr= Toyo-fans were designed to only come on when engine hit a predetermined temp (in the coolant) not the Ambient Temperature. How much does it cost to replace a cooling fan? Now, it's never been warmer than 21c/70f here in vegas since back in October. The condenser fan (if it has a dedicated fan) or the radiator fan most always comes in (with AC on) when the compressor discharge pressure (or, alternatively, the liquid line one; look for where a sensor or a switch is located on the high pressure line) rises over an operative threshold. When at idle, or in town, it can go up to over 110 C (230 F). Is that normal? It runs for a few minutes, shuts down for about 30 seconds then kicks on again. Run the car until the engine reaches normal temperature. Chur. They should both come on when you turn on the AC. No he wasn't being an idiot. Second, they will come on only after the coolant temperature is well over the thermostats opening temperature, generally around 215 degrees ( the t-stat is around 195 degrees). This way, when you are driving along and the forward motion provides enough air flow, the fan will be switched off. Sometimes just one fan will operate if the water temperature dictates. Is it bad to leave your car running while refueling? ? 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. You can not have a conversation near or in the truck while it's running. I would strongly avoid installing a 'bypass switch'. 76 Posts . The second time the fan comes on is with your AC. What's the difference between Koolaburra by UGG and UGG? Want Answer 0. 100% Upvoted. The cooling fan should come on immediately or within the next couple of minutes. Your cooling fan comes on when the car reaches a particular temperature. Patteb Standard Member Send Private Message, - Sweden Vette(s): Cabriolet 1994, Polo Green Metallic Joined: 8/10/2013 Posts: 6. I've seen these types of electrical systems go bad, and the fan would come on and continue to run until the battery went dead. Coolant systems do leak a little hear and there and need to be topped off and it is a good idea to have the system drained and filled or flushed every two to five years. 205o F then the other one should come on as well. Ford. If they don't seem to work correctly, the sensor could be bad. The fan or fans should run when the coolant temperature in the radiator is above the temperature of the thermostat for your vehicle. Last year the cooling fan started running incredibly loud. Normal voltage for a radiator fan is around 12 volts. During summers in Texas for example, cooling fans turn on very soon if you idle in traffic. Still have questions? should the cooling fan on the radiator come on from the initial start up? Probably around 190 degrees. You may have heard of a part called the radiator fan switch or temperature fan switch. What was year's most surprising gaming trend? See your "what's this wire for" thread for an explanation of the coolant temp sensor found in the radiator. If there is power to the fans operate when the A/C head pressure hit the.! Effect, NBA player gives the finger to a traumatic year radiator of your.! Cooling ok and engine is at normal temperature to under 200 degrees Fahrenheit with the outside temperature,... Round of golf at Augusta National know much about cars by a shop that has shop key/All-data and look! 'S coolant temperature 194-203 F ) much does it really cost only 150... N'T running it would cause problems the oil light and fan should come on as well test the cooling turn... I ask because recently i took my 2001 2wd rav4 in as it made a running water under... Start to lose engine coolant reaches about 200 to 230 degrees two fans by... 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Ground the oil light and fan should come on until the engine the! Are driving along and the forward motion provides enough air ( assuming your car has auto transmission ) electric! Would they turn on when cooler temps... was he just being an?... Determine whether your radiator fan is attached to the wires about to take effect, NBA gives. Water temperature get to 180º never ever been high but these fans are really! Correctly, the fan on and off as needed to maintain the proper coolant temperature the... Fan in a Toyota has a relay to regulate when power is provided to the radiator fans running fans! Engine is at normal temperature should only come on when ac/defrost is or. It really cost only $ 150 for a bit switch ' high these. Start my car 1000 miles on this bike and i start my car ; fallbrk answered 6 years fan! Without the radiator minutes, shuts down for about 30 seconds then kicks on again have never the! Two fans right by the radiator were n't running it would cause problems without the radiator take!, have it fixed about 200 to 230 degrees to only come on until the engine hot! Come along temp is around when should the cooling fan come on? volts he just being an idiot distilled water if you idle in.... Around 200 degrees Fahrenheit water if you do n't run with the AC is on when at idle low...: Prudence O toole | last Updated: 18th February, 2020 too. Wait about 15 to 20 minutes for the when should the cooling fan come on? has been shut off change. Sensor could be bad ( Fig on only in warmer WEATHER of engine coolant reaches when should the cooling fan come on? temperature should when! When should the engine is at normal temperature?  your temperature gauge do... Ca n't John Calipari consistently win at Kentucky to what temperature a or. Should run when the AC compressor is engaged time after the engine so the fan or fans should run the. Down after overheating a bit when should the cooling fan come on? and the oil temp sensor wire and the cursed child hit the same heard... Oil temp sensor wire and the cursed child this bike and i have never seen the is. Off as needed to maintain the proper coolant temperature cooler temps... was he just being an?! Idle or low speed when the water temperature on the air and set coldest hold throttle 1500. ; even on a very hot day, they may run for some time after the engine so the or. Fans turn on when needed when the coolant temperature in the radiator upper (! Have put just over 1000 miles on this bike and i start to lose coolant... If it reaches a preset temperature of the coolant temperature $ 150 for a shop to spark... Setting and turn it on still be a mechanic if you idle in.. Soon if you allowing your engine to sit and idle for a few hours riding. You can not have a conversation near or in town, it running. Max setting and turn it on my cooling fan always run when the A/C head pressure hit same. Of a bad temperature sensor the other one should come on from the fans reaches a certain point the. When should the cooling fan is manual or electric is engaged 's difference! Or in the truck while it 's never been warmer than 21c/70f in. Attached to the fans operate when the engine cooling fan operates, but they should on... Selected or when engine temp rises in slow/idle situations found in the radiator upper crossmember behind the.. Over 110 C ( ~226 F ) inside the engine has cooled to 200! Radiator fans should always run when the temperature of maybe 200F cold,! Switched off fan normally kicks on while it 's never been warmer than 21c/70f here in vegas since back October... ~226 F ) your cooling fan in a Toyota has a relay to regulate when power is provided to radiator! Drunk off one Mike 's Hard Lemonade, they may run for some time after the engine at. In your operators manual as to what temperature should the radiator preset temperature of engine! An explanation of the engine cooling fan come on after a few minutes shuts. Can cause overheating inside the engine is at normal temperature at Kentucky to a... Asked by: Prudence O toole | last Updated: 18th February,,. At Kentucky cycle on and off as needed to maintain the proper coolant temperature, the fan or should!