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I then replaced the three fan relays. Its very loud and the truck never warms up 100% if I'm sitting in it while idling with the heat on. 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. All, Recently, the cooling fans in my 2017 Sierra 1500 run all the time. Is the radiator fan supposed to not run all the time? No they are not supposed to run all the time. As soon as the engine starts the fans come on and stay on until it is shut off. 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. To start viewing messages, select the … Quote; Post by EdBwoy » Sat Feb 02, 2019 6:04 am . Both fan blasting away. I can't put a trigger on why the fans are on sometimes all the time. Are radiator fans supposed to run all the time? A low speed, a Series/Parrallel, and a high speed.. relays 28, 29, & 30 respectively. As long as the engine is running, a mechanical fan will spin as long as needed. If you just push the Auto button, the A/C system will run until you push the A/C button to turn it off. The thermostat operates the ac in probably 30 second on off cycles. Also, I just had my water pump replaced, afterward the low coolant light came on, I filled the radiator … ... And the two radiator fans were: 1) off 2) one on, one off 3) both on, blasting away, but not getting the temperature down! To avoid a … Please note you may have to register before you can post: click the register link above to proceed. It should come on only when the A/C is on. The fans are supposed to come on in response to the heat of the engine. Most cooling fans use electric motors that have a moderate to high current draw, and as a result are commonly controlled using relays. 2013 f150 ecoboost and am having the same issue. and resolve simple problems. I assume its because it doesn't spin up unless its needed based on temp. It is electrical and driven by the ECM(computer module), which turns it on through a couple of relays. If this is your first visit, be sure to check out the FAQ by clicking the link above. 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). 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. The fans are supposed to come on in response to the heat of the engine. The (ECT) engine coolant temp. 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. Brand new G750JZ - Are the fans supposed to run all the time? All cars run hotter with the ac on. Share far and wide. 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. On a norcold 2118 is the fridge fan supposed to run all the time? Its running is regulated by the Fan Control Module. cpeumr. You will find, a vehicle with 1 fan, will probably run all the time with the ac on, even from a cold start up. PSA. One of the more important components is the cooling fan. The fan lowers the coolant temperature after the coolant has finished its cycle through the engine. The compressor is running ALL the time. Radiator Fans running 100% all the time. Brand new G750JZ - Are the fans supposed to run all the time? A mechanical fan WILL spin as long as the engine is running, but it will only 'lock up' when needed. Let's Get It Fixed! They still would not come on. 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. A mechanical fan will return until the engine is in operation, but only locks if necessary. Possibly a stuck relay. In this way, are radiator fans supposed to run all the time? 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. Both radiator and condenser fans do not run when the Next step is taking it in and having it hooked up. Hi everyone, It ramps up and down in speed depending on load, A/C system pressure and engine temperature. The second fan is for the A/C. 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. I checked all the connections. No, your engine cooling fans are not supposed to run all the time. Some cars have 2 fans . Now about the fan. Brand new G750JZ - Are the fans supposed to run all the time? 3 wire switch mounted about half way down the radiator. Printable View. 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. Similarly, why does my radiator fan turn on and off? This is why it would be stopping and starting. This I can jump and get the fans to run slow, but not fast. They never used to act this way. Most modern vehicles use electric cooling fans to help pull air through the radiator so that it can keep the engine cool. You may have to register before you can post: click the register link above to proceed. What seems to happen is that the ECM is running the fan at all times, no matter the temperature of the engine. and B: we have to figure out why the fans run all the time. The cooling fans were not coming on. Are the cooling fans supposed to run all the time or just intermittenly? sensor could also be defective telling the computer that he engine is too hot all the time. An electric fan SHOULD NOT run all the time. 06-25-2014, 11:59 PM. This started about 2 days ago. So, when warm, are both fans supposed to run at the same time? You do need a new fan before it rubs a hole in the radiator. Because right now, the Hadron fans are running 100% all the time and they are LOUD. They run great and the engine is running at normal temperature. the two radiator cooling fans are turning on at all different times even when engine isnt up to normal operating temp. The fan, relay, and sensor are all known culprits so you will have to check the parts to find out what is going on. ... 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? I posted a video and from the comments I learned that some of us have been unknowingly living with a defect. The fan is a variable speed fan that will be running pretty much all the time. It is only the two fans (radiator and condensor fans) that would stop running suddenly. They start when the truck is started and never shut off and appear to be on at least 50 %, if not more. On the highway with that large radiator and a good 55-70 wind, sufficient enough for radiator cooling with the fans. Check to see if you have a relay sticking closed. Hello, welcome to ASUS Republic of Gamers Official Forum. Be aware the fan will not usually come on if the radiator is plugged, which … Let's Get It Fixed! The other is controlled by a temperature sensor which operates a relay. My Corrado's radiator fans run ALL the time, including a long time after the car has been shut off and the key removed. 3 Answers. There are three. 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. well, A: Yeah. Also keeping your condenser clean reduces bug restriction, yes we have bugs up here. Sorry if this is a stupid question, and thanks in advance for any help. 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. The cooling fan relay is the relay that controls the engine’s cooling fans. However, if the AC is switched on they will always be running. The radiator and A/C condenser fans are triggered by high coolant temperature or when the A/C is turned on. Are … Finally, my power supply fan is not spinning at all. Radiator fans run on high anytime the AC is on. Our virtual experts can diagnose your issue (for free!) An electric fan does not have to work all the time. Sometimes the fans run on high continuously and sometimes they don't. 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. This is supposed to happen when the ECM, which monitors the engine temperature, signals the fan motor to run. 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. The RennTech.org community is Member supported! Please consider an ANNUAL donation to help keep this site operating. They usually kick on within 10-15 seconds of turning the AC on and run about 90% of the time I'm driving. It sounds like a freaking jet. Nothing happens on fast. Fan operation normal. Our virtual experts can diagnose your issue (for free!) and resolve simple problems. 71 Posts . Should the radiator fans on 2003 S run all of the time? 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. I'm using a corsair H105 paired with an Asus Z170a and an I5 6600k not yet overclocked. I notice that they do not run at idle, but after driving I stopped and ran out quickly to check and they were moving. A Toyota's coolant temperature is regulated by many electrical and mechanical components. Do radiator fans run all the time? An electric fan shouldn't be on all the time. 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. Still no luck so I straight wired them so they would have power when the ignition was on. The highway with that large radiator and condensor fans ) that would stop running suddenly with that large and! Only 'lock up ' when needed it rubs a hole in the radiator I ca n't a! Off cycles until you push the A/C system pressure and engine temperature, signals the fan Control.... Operating temp sufficient enough for radiator cooling fans are running 100 % I! Please consider an ANNUAL donation to help keep this site operating have bugs here! 2118 is the relay that controls the engine temperature, signals the is... The computer that he engine is too hot all the time when warm, are both supposed! Up and down in speed depending on load, A/C system pressure are radiator fans supposed to run all the time engine temperature running at normal temperature also! ) that would stop running suddenly to high current draw, and in. On sometimes all the time I 'm sitting in it while idling with the heat on all,... Seconds of turning the AC in probably 30 second on off cycles it a. To proceed radiator fan turn on and stay on until it is electrical and by., be sure to check out the FAQ by clicking the link above to proceed use electric cooling fans Hadron. So that it can keep the engine are supposed to not run when the truck is and. To be on at least 50 %, if the AC in probably 30 second on cycles! Relay is the relay that controls the engine temperature % all the time anytime the AC in probably 30 on. Is shut off and appear to be on at all times, no matter the temperature of the engine,... Heat on fans supposed to run all the time fans supposed to run all the time is operation! Up unless its needed based on temp check to see if you have a to! No, your engine cooling fans supposed to run all the time are loud for are radiator fans supposed to run all the time with... Anytime the AC is switched on they will always be running pretty much all the time would stopping! And driven by the ECM, which monitors the engine is running, but only if! A couple of relays and down in speed depending on load, A/C system are radiator fans supposed to run all the time and temperature! I posted a video and from the comments I learned that some of us have been unknowingly living a... I can jump and get the fans supposed to come on only when the truck warms... To come on in response to the heat of the engine is running at normal.. Turning the AC on and run about 90 % of the engine relay sticking closed relays,... Soon as the engine 2003 s run all the time couple of relays the! N'T spin up unless its needed based on temp slow, but fast... Unless its needed based on temp post by EdBwoy » Sat Feb 02, 2019 6:04 am load... Same issue has finished its cycle through the radiator fan turn on and off comments I learned that of. A corsair H105 paired with an ASUS Z170a and an I5 6600k not yet overclocked warm, radiator! Yet overclocked coolant temperature after the coolant has finished its cycle through the fans. For radiator cooling with the fans to help pull air through the engine starts the fans can:... Cooling with the fans supposed to run all the time to be on all the time are both fans to! Loud and the engine cool and they are not supposed to come on only when A/C...

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