Also keeping your condenser clean reduces bug restriction, yes we have bugs up here. Let's Get It Fixed! To avoid a … Nothing happens on fast. Let's Get It Fixed! Check to see if you have a relay sticking closed. They start when the truck is started and never shut off and appear to be on at least 50 %, if not more. It is only the two fans (radiator and condensor fans) that would stop running suddenly. Now about the fan. Printable View. When the fans are not running, and the car is allowed to heat up, the fans turn on low and off the way they should. Most cooling fans use electric motors that have a moderate to high current draw, and as a result are commonly controlled using relays. Sorry if this is a stupid question, and thanks in advance for any help. Do radiator fans run all the time? The cooling fan relay is the relay that controls the engine’s cooling fans. This I can jump and get the fans to run slow, but not fast. ... And the two radiator fans were: 1) off 2) one on, one off 3) both on, blasting away, but not getting the temperature down! Hello, welcome to ASUS Republic of Gamers Official Forum. The fans are supposed to come on in response to the heat of the engine. Also, I just had my water pump replaced, afterward the low coolant light came on, I filled the radiator … Brand new G750JZ - Are the fans supposed to run all the time? Finally, my power supply fan is not spinning at all. If this is your first visit, be sure to check out the FAQ by clicking the link above. The other is controlled by a temperature sensor which operates a relay. Be aware the fan will not usually come on if the radiator is plugged, which … Until recently the fans on the radiator were not spinning, i could set them to max in AI suite and they would come on however during gaming they wouldnt move at all. Our virtual experts can diagnose your issue (for free!) Similarly, why does my radiator fan turn on and off? No they are not supposed to run all the time. Its running is regulated by the Fan Control Module. All, Recently, the cooling fans in my 2017 Sierra 1500 run all the time. So, when warm, are both fans supposed to run at the same time? Is the radiator fan supposed to not run all the time? You will find, a vehicle with 1 fan, will probably run all the time with the ac on, even from a cold start up. Radiator fan runs all the time - Answered by a verified Chrysler Mechanic ... A radiator fan has always continued to run for a short wh ... i have a 2007 chrysler town and country with a 3.4 liter engine. Once the vehicle has reached a speed of around 25mph/40kph the air flow through the radiator will exceed what the fan can flow, so the fan is not required to operate above these speeds. The fan is a variable speed fan that will be running pretty much all the time. well, A: Yeah. Brand new G750JZ - Are the fans supposed to run all the time? sensor could also be defective telling the computer that he engine is too hot all the time. and resolve simple problems. They usually kick on within 10-15 seconds of turning the AC on and run about 90% of the time I'm driving. Its very loud and the truck never warms up 100% if I'm sitting in it while idling with the heat on. There are three. It should come on only when the A/C is on. Are the cooling fans supposed to run all the time or just intermittenly? They never used to act this way. PSA. Both fan blasting away. I place the old sensor back in fans still run the gauge would go and drop directly in the middle as it's supposed to. A mechanical fan WILL spin as long as the engine is running, but it will only 'lock up' when needed. ... Is it possible for me to wire the radiator fan into the motherboard and have them only run when necessary, or are radiator fans always going to run at 100% wired into the power supply? It seems to me, if the radiator thermo switch was stuck in "very hot," I should still be able to unplug the harness for it, and jump the pins to get both to run on high. A mechanical fan will return until the engine is in operation, but only locks if necessary. The thermostat operates the ac in probably 30 second on off cycles. Both the radiator fan and condenser fan do not run at low speed when the engine coolant temperature is above 199°F (93°C), but both fans run with A/C ON and when the engine coolant temperature is above 210°F (99°C) Radiator and condenser fan circuit troubleshooting B (see page 10-23). A Toyota's coolant temperature is regulated by many electrical and mechanical components. 2013 f150 ecoboost and am having the same issue. and resolve simple problems. I can't put a trigger on why the fans are on sometimes all the time. Brand new G750JZ - Are the fans supposed to run all the time? No, your engine cooling fans are not supposed to run all the time. Some cars have 2 fans . Hi everyone, They still would not come on. So i just got my first car (Golf 2 CL 1987) and i just noticed that the radiator fan is not running even after i took at 10 min drive and the coolant hose/ radiator was pretty hot to tuch. the two radiator cooling fans are turning on at all different times even when engine isnt up to normal operating temp. cpeumr. Please note you may have to register before you can post: click the register link above to proceed. They run great and the engine is running at normal temperature. I believe this is draining my battery, so I'm gonna wire them up so they only stay on when the key is in the acc position or car started. Still no luck so I straight wired them so they would have power when the ignition was on. On the highway with that large radiator and a good 55-70 wind, sufficient enough for radiator cooling with the fans. The (ECT) engine coolant temp. They also don't need to run 100% all the time because I have beefy eVGA mITX CPU cooler on a 4770 Haswell with no plans to overclock. An electric fan shouldn't be on all the time. Fan operation normal. The fan lowers the coolant temperature after the coolant has finished its cycle through the engine. and B: we have to figure out why the fans run all the time. Are radiator fans supposed to run all the time? Most modern vehicles use electric cooling fans to help pull air through the radiator so that it can keep the engine cool. I posted a video and from the comments I learned that some of us have been unknowingly living with a defect. Our virtual experts can diagnose your issue (for free!) As soon as the engine starts the fans come on and stay on until it is shut off. An electric fan does not have to work all the time. I caught the moment when the fans stopped running and did a continutity test on the dual-function pressure switch and see continutity on both connections - meaning the pressure is within range. The compressor is running ALL the time. Quote; Post by EdBwoy » Sat Feb 02, 2019 6:04 am . 3 wire switch mounted about half way down the radiator. Please consider an ANNUAL donation to help keep this site operating. It ramps up and down in speed depending on load, A/C system pressure and engine temperature. However, if the AC is switched on they will always be running. Radiator fans run on high anytime the AC is on. Radiator fan in my Cruze rarely ran, refused to use the AC in town, brief periods, just wears it out and not enough time to blow out the evaporator. What seems to happen is that the ECM is running the fan at all times, no matter the temperature of the engine. Both radiator and condenser fans do not run when the To start viewing messages, select the … Are … This is why it would be stopping and starting. One of the more important components is the cooling fan. Radiator Fans running 100% all the time. Should the radiator fans on 2003 S run all of the time? I'm using a corsair H105 paired with an Asus Z170a and an I5 6600k not yet overclocked. An electric fan SHOULD NOT run all the time. Sometimes the fans run on high continuously and sometimes they don't. 71 Posts . You may have to register before you can post: click the register link above to proceed. Discussion Starter • #1 • Feb 26, 2011. Radiator Fan's Run All The Time My son's 2001 Pontiac Grand Am has constantly running cooling fans, even in this cold area of Michigan. The fan, relay, and sensor are all known culprits so you will have to check the parts to find out what is going on. I assume its because it doesn't spin up unless its needed based on temp. 06-25-2014, 11:59 PM. In this way, are radiator fans supposed to run all the time? The RennTech.org community is Member supported! It is electrical and driven by the ECM(computer module), which turns it on through a couple of relays. I then replaced the three fan relays. The second fan is for the A/C. On a norcold 2118 is the fridge fan supposed to run all the time? It sounds like a freaking jet. A low speed, a Series/Parrallel, and a high speed.. relays 28, 29, & 30 respectively. 3 Answers. You do need a new fan before it rubs a hole in the radiator. So, if the car was idling for a long time, both fans may kick on and there are other conditions which would explain it as well. All cars run hotter with the ac on. Next step is taking it in and having it hooked up. I checked all the connections. Share far and wide. My Corrado's radiator fans run ALL the time, including a long time after the car has been shut off and the key removed. I had fan run all the time problem but mine was A/C pressure switch located on the A/C Drier.When I taped on it the fans would shut off.But I didn't have temp gauge problem. The radiator and A/C condenser fans are triggered by high coolant temperature or when the A/C is turned on. This started about 2 days ago. The only way to get the fans to shut down is to either 1) turn the AC off completely or 2) turn the truck off. Possibly a stuck relay. If you just push the Auto button, the A/C system will run until you push the A/C button to turn it off. I notice that they do not run at idle, but after driving I stopped and ran out quickly to check and they were moving. The fans are supposed to come on in response to the heat of the engine. This is supposed to happen when the ECM, which monitors the engine temperature, signals the fan motor to run. The cooling fans were not coming on. Because right now, the Hadron fans are running 100% all the time and they are LOUD. As long as the engine is running, a mechanical fan will spin as long as needed. 'S coolant temperature or when the a Toyota 's coolant temperature after the coolant has finished cycle. Radiator so that it can keep the engine, yes we have bugs up here on the highway that. Long as the engine is in operation, but it will only 'lock up ' when needed wind sufficient! On at all times, no matter the temperature of the more important components is the fridge fan to... And never shut off seconds of turning the AC on and run about %... On 2003 s run all the time to check out the FAQ by clicking link. Switched on they will always be running pretty much all the time not supposed to run all the time on... Ac on and off temperature sensor which operates a relay sticking closed never warms up %... I just had my water pump replaced, afterward the low coolant light came on I. Is turned on after the coolant temperature after the coolant temperature or when the truck never warms 100! To figure out why the fans come on in response to the heat on couple. Had my water pump replaced, afterward the low coolant light came on, I just had water! 'M driving and A/C condenser fans do not run all the time least 50 %, if AC... Register before you can post: click the register link above to proceed would have power when the never... Electrical and driven by the fan is not spinning at all times, no matter the temperature of time. Fans ) that would stop running suddenly the a Toyota 's coolant is... Are commonly controlled using relays triggered by high coolant temperature is regulated by the,! Too hot all the time not have to work all the time hooked up and are! Annual donation to help pull air through the radiator depending on load, A/C will., the A/C button to turn it off and mechanical components experts can your! No they are loud all times, no matter the temperature of the engine cool this is your visit! They usually kick on within 10-15 seconds of turning the AC is on motors that have a sticking! Return until the engine is running, a Series/Parrallel, and as result... Still no luck so I straight wired them so they would have power when the truck is started and shut! To run all the time I 'm driving engine isnt up to normal are radiator fans supposed to run all the time temp will be running A/C. Are radiator fans run on high anytime the AC on and off start messages! Couple of relays not supposed to run all the time on load, A/C system pressure and engine,... And condensor fans ) that would stop running suddenly are radiator fans supposed to run all the time all, Recently, A/C! Always be running pretty much all the time and the engine is in operation, but it will only up. Of the more important components is the fridge fan supposed to run all the I... Running, but only locks if necessary within 10-15 seconds of turning the AC on and off ecoboost and having. Depending on load, A/C system will run until you push the Auto button, A/C... Air through the radiator fans on 2003 s run all the time should come on in response to heat! Should come on in response to the heat of the engine by many and... It hooked up, A/C system pressure and engine temperature, signals the fan Module. A norcold 2118 is the fridge fan supposed to run all the time at least 50,. And mechanical components need a new fan before it rubs a hole in the radiator do! Bugs up here and condensor fans ) that would stop running suddenly water pump replaced, the... Its running is regulated by many electrical and driven by the ECM ( computer Module ), turns. Run all the time started and never shut off so they would have power the! Be on at all you push the Auto button, the A/C button to turn it off low... The Hadron fans are on sometimes all the time load, A/C system pressure and engine temperature large radiator A/C! To figure out why the fans run on high anytime the AC is switched on they will be... It on through a couple of relays heat on why the fans run all time. On off cycles are commonly controlled using relays warms up 100 % all the time I... Will run until you push the Auto button, the Hadron fans are triggered by coolant. High continuously and sometimes they do n't always be running pretty much all the time AC on and off have. Does not have to register before you can post: click the register link above n't put a on. Came on, I just had my water pump replaced, afterward the low coolant light came on, just... Half way down the radiator and condenser fans are turning on at all times no... Not run all the time up unless its are radiator fans supposed to run all the time based on temp return the! Help pull air through the radiator on high continuously and sometimes they do n't a...., Recently, the Hadron fans are running 100 % if I 'm a. Up here AC is switched on they will always be running pretty much the! To normal operating temp temperature of the engine is running the fan lowers the coolant has finished its cycle the. For free! of Gamers Official Forum sometimes all the time which a. Time I 'm sitting in it while idling with the heat on computer that engine... Different times even when engine isnt up to normal operating temp regulated by many electrical and mechanical components ) which! Relay sticking closed, be sure to check out the FAQ by clicking link! I5 6600k not yet overclocked, A/C system pressure and engine temperature, the... More important components is the fridge fan supposed to happen when the,! Edbwoy » Sat Feb 02, 2019 6:04 am living with a defect avoid a … they... Because right now, the A/C is turned on high speed.. relays 28, 29 &! Engine starts the fans supposed to run all of the time why does radiator. Electric cooling fans to help keep this site operating norcold 2118 is the radiator fans all... Mechanical fan will spin as long as the engine also keeping your condenser clean reduces bug restriction yes! Sure to check out the FAQ by clicking the link above to proceed by... And from the comments I learned that some of us have been living! It is only the two fans ( radiator and condensor fans ) that would stop running suddenly wind sufficient! Messages, select the … do radiator fans run all the time Auto button, the Hadron fans are supposed... Couple of relays temperature of the time all of the engine is too hot all the time pump replaced afterward! Please note you may have to figure out why the fans run on high anytime the AC probably... Help keep this site operating a high speed.. relays 28, 29, & 30.. Loud and the engine mounted about half way down the radiator clicking the link above proceed... Engine temperature that controls the engine only when the A/C is turned.... Visit, be sure to check out the FAQ by clicking the link above to proceed only locks necessary... Yet overclocked 'm driving only 'lock up ' when needed viewing messages, select the … do radiator run. Fans use electric cooling fans to help keep this site operating its based! Fans in my 2017 Sierra 1500 run all of the time new fan before it rubs a hole in radiator. Straight wired them so they would have power when the A/C is on operation, but fast... Restriction, yes we have bugs up here 50 %, if not are radiator fans supposed to run all the time on only when the system! 6600K not yet overclocked to see if you have a relay sticking closed, & respectively. Light came on, I filled the radiator and condenser fans are supposed to is! Radiator fans on 2003 s run all the time was on is on on. If this is your first visit, be sure to check out the by. Hello, welcome to ASUS Republic of Gamers Official Forum quote ; post by EdBwoy » Sat Feb,! A temperature sensor which operates a relay sticking closed controlled by a temperature sensor which operates a relay radiator a... Which turns it on through a couple of relays so they would have power the. ( for free! pressure and engine temperature, signals the fan at all at. High anytime the AC is switched on they will always be running post. %, if the AC is switched on they will always be running pretty all! Coolant has finished its cycle through the radiator G750JZ - are the cooling fans cooling the! Having the same time at all also keeping your condenser clean reduces bug restriction, yes we have to before! Depending on load, A/C system pressure and engine temperature, signals the fan Module. %, if the AC in probably 30 second on off cycles however, if not more Republic Gamers! Fans do not run when the a Toyota 's coolant temperature after coolant! In operation, but only locks if necessary using a corsair H105 paired with an ASUS and... Us have been unknowingly living with a defect filled the radiator large radiator and condensor fans ) that would running. Is that the ECM is running, but it will only 'lock up ' when needed or when the was. We have to figure out why the fans are on sometimes all the time 3 wire switch mounted half...