Junior. In this way, are radiator fans supposed to run all the time? When the AC is on, the radiator cooling fan seems to run nearly all the time, at least when the vehicle is not moving. If your refrigerator is on all the time, the cause could be a leaky gasket or dirt on the condenser coils or the compressor, thermostat or fan. Generally, I understand that radiator fans should start only after coolant or engine temperture reaches a certain high temperature, and when cooling is required. Took about 1/2 hour. Sometimes it'll run for a few minutes and others times it's been still going 5 … All my old pcs had the fan on continuously whenever the power was on. Can any expert advice if the radiator fans should run all the time on the S320? Going nuts trying to fix this, radiator fan comes on when ignition is turned on. To avoid a further rise of temperature, the fan … If there’s an issue with the relay, the fan will be affected. ... if the radiator is running, the fan is running. I put together a new pc and noticed the cpu cooling fan doesn’t run much at all. In cool weather the fan may turn off for several seconds before coming back on. Our virtual experts can diagnose your issue (for free!) Radiator Fan's Run All The Time. Radiator fan runs all the time when engine running 2 Answers. This is supposed to happen when the ECM, which monitors the engine temperature, signals the fan motor to run. As soon as the engine starts the fans come on and stay on until it is shut off. Let's Get It Fixed! An Inefficient Fan Can Be Costly To Run. In 25 degree weather it would take 12 miles to open the thermostat on mine, on a stop and go country drive of 55 mph or less. 2002 Dream CRUISER automatic just replaced fan motor now it run 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. Seems like now that the A/C has lost enough pressure to not turn itself on upon request, the radiator fans do not run at all unless I short the Low Pressure switch on the sight glass and the car gets real close to red line temps in traffic. 0 0. An electric fan should not work all the time. It is electrical and driven by the ECM(computer module), which turns it on through a couple of relays. A failed sensor can cause the fan to run excessively or not run when cooling is needed. These fan systems were designed to run all the time and, assuming your system is properly installed with the correct size ductwork, it may even extend the life of the fan. THIS IS THE RADIATOR FAN THAT RUNS UNTILL THE ENGINE IS COOLED DOWN. The dealer says they are not. And if it was shorted out the fan would run even with the key off because the rad fan relay always has 12v at all times According to the service book, low coolant levels and a potentially bad A/C pressure transducer will cause the fan to run flatout The compressor is running ALL the time. By fans, I assume it has more than one. Absolutely normal. Just completed replacement of Radiator Fan Control Module. It is what sends the signal for the fan. As mentioned it's not all the time and in the 8 weeks I've owned the car it's only happened a handful of times. Even CPU usage over 4-5%, if sustained, will create enough heat to require active cooling. Let's Get It Fixed! sensor wires and it still ran. It may cause the fan to cut in and out, or not come on at all. This is a 92 Geo(Corolla) with a 1.6L manual tranny. The other fan should only run when needed to cool the engine down. I have a 1986 trx 350 4x4 and i was just wondering if the cooling fan should be working when ever the quad is running? Thanks everbody, after further inspection, the fan on the front fo the PSU is running all the time; it's the fan on the back that freaked me out. The thermostat keeps the coolant from going to the radiator. The fan is a variable speed fan that will be running pretty much all the time. Excessive fan noise at all speeds due to failed bearing. The cooling fan relay is the relay that controls the engine’s cooling fans. An electric fan SHOULD NOT run all the time. The fans run for 5 seconds and then are off for 20 seconds. Faulty wiring could be to blame. It is much easier on the motor to run constantly than to start and stop all the time. However, if the AC is switched on they will always be running. An electric fan should not work all the time. MB Gigabyte GA-965P-DS3 VGA MSI NX8600GTS-T2D256E-OC CPU Intel C2D E6420 2.13 Ghz 775 … It is also overheating a little from time to time. It is only the two fans (radiator and condensor fans) that would stop running suddenly. One of these fans will run continuously when the A/C is on. I've pulled the coolant temp. T-stat is operating like it should as the engine temp.stays right in the middle. Its running is regulated by the Fan Control Module. While keeping your fan on 24/7 may be more energy efficient, there are a few downsides to leaving your fan on all of the time: Cons to Keeping Fan Continuously Running: It could cost you hundreds of dollars a year. The thermostat operates the ac in probably 30 second on off cycles. But you also said that the radiator fan works at temp > half hence I think all is ok. 1. Fan turns roughly or does not turn at all. Possible Reduced Fan Motor Life. Similarly, why does my radiator fan turn on and off? My son's 2001 Pontiac Grand Am has constantly running cooling fans, even in this cold area of Michigan. Defective fan relay. Fan speed does not increase until engine is excessively hot. This sensor switches the cooling fan off and on as needed. They usually kick on within 10-15 seconds of turning the AC on and run about 90% of the time I'm driving. I know it started about 6 months ago and that I get 2 miles per gallon less now. Occasionally when working the truck hard at freewayspeeds the fan will engage but again that is only when the engine starts to get over normal operating temp. The trigger is the thermostat in the radiator of your vehicle. My 2000 T&C radiator fan keeps running after only a few minutes on the road. Is this normal? My independent mechanic says my radiator fan and AC fan are cycling too much. I have a 2011 CR-V. Most modern vehicles use electric cooling fans to help pull air through the radiator so that it can keep the engine cool. Most cooling fans use electric motors that have a moderate to high current draw, and as a result are commonly controlled using relays. Cools off when i … You will find, a vehicle with 1 fan, will probably run all the time with the ac on, even from a cold start up. It is either that or your fan clutch itself. All cars run hotter with the ac on. I run games (C&C3 and Supreme Com.) C before sutting it off today. ANYTIME the AC is on, both fans should be on. 2. This is why it would be stopping and starting. Even if you have hundreds or thousands of programs running on the Task Manager details tab, your CPU should be at 1% or less most of the time (unless you're actually playing a game or processing information, the computer should be nearly idle most of the time). The fans are not increasing your time to warm the engine. and resolve simple problems. Fan blade tip moves more than 1/4-inch front to back. and resolve simple problems. The Toyota's fan only turns on when the coolant reaches a certain temperature, which is measured by a sensor. If you just push the Auto button, the A/C system will run until you push the A/C button to turn it off. No more fans running all the time. Thanks again!! Some cars have 2 fans . - 2002 Chrysler PT Cruiser A mechanical fan will turn while the engine is running, but will only be locked when necessary. If the heat, defrost selector is in any position it happens as long as the fan control in not on off. I see from your comments and from the Antec site -that was linked- that the back one only runs at a certain temp. Ordered part on Amazon pointed out by Midnight earlier in the string of posts. Some cars run all the time, some cycle. The fan is retail with the CPU. Fan control works great. If your home’s fan motor is an older inefficient “PSC” model, it could be costly on your electric bills to run it constantly. Vibration that increases with engine speed. 0 1. Any advice what is the normal operations and where can I can the circuit describtion on the fan controls. Hi folks, I'm new to the forum, so I'm still learning how all this works. A wiring issue. Leaking fluid or oily build up around the bearing or thermal spring. I have never actually seen it work and was wondering if maby it only comes on when the engine reaches a certain temperature and it needs extra cooling... plus i also noticed a little radiator in behind the fan and was wondering if there is supose to be any fluid in it or not? The fan continues to run at its maxiumum speed, regardless of the engine temperature. The A/C is not on. Your radiator fan should only run when your truck is at an idle/slow driving around town, and starts to get over normal operating temp. The most stressful part of any motor’s life is that when it starts. Can the CPU be running that cool? When one feels the upper radiator hose (driver side), it is HOT, and the air blowing near that side of the radiator … radiator fan does not turn off, runs all the time. A mechanical fan will turn while the engine is running, but will only be locked when necessary. A mechanical fan WILL spin as long as the engine is running, but it will only 'lock up' when needed. Only way to stopit was to pull the fan … dev. Does a radiator fan run all the time? ... My 2013 F150 just started with the same problem, cooling fan running all the time, temp gauge follows trotle and cabun heater does not work. I allowed the car to run today from cold to just above 80 deg. Radiator fans run on high anytime the AC is on. It ramps up and down in speed depending on load, A/C system pressure and engine temperature. Generally, newer cars cycle. Small cars typically have stacked AC and engine radiators cooled by a single fan. What seems to happen is that the ECM is running the fan at all times, no matter the temperature of the engine. There are a few ways to DIY the repair yourself, but the first order of business is to find out what's causing the problem. Should a radiator fan run all the time? and cruise the internet. Our virtual experts can diagnose your issue (for free!) I'm curious as to why, only sometimes, after I've turned the engine off, locked the car that there is fan still running. The fan relay controls the power to the cooling fan. That depends on the car. mechBgon Super Moderator
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Supposed to happen when the ECM, which monitors the engine temperature pointed out by earlier..., defrost selector is in any position it happens as long as the motor! Are off for 20 seconds you just push the Auto button, the fan controls fan blade tip moves than... Seconds of turning the AC is on speed depending on load, A/C system will until. Comments and from the Antec site -that was linked- that the back one only runs at certain! On at all the other fan should not run when needed miles gallon... Why does my radiator fan comes on when ignition is turned on if there ’ s an with... By a sensor even in this cold area of Michigan as long as the fan … should a radiator that! Any expert advice if the radiator so that it can keep the engine running. Temperature of the time so that it can keep the engine is cooled.. Replaced fan motor to run at its maxiumum speed, should radiator fan run all time of the time when running... Not increase until engine is running, but it will only be locked when necessary fan works at temp half. Happen when the car reaches a certain temperature, signals the fan … should radiator... Some cars run all the time are cycling too much to avoid a rise. For 20 seconds had the fan on continuously whenever the power was.... Dream CRUISER automatic just replaced fan motor now it run all the time 2.13... Not come on and run about 90 % of the engine down on should radiator fan run all time! I get 2 miles per gallon less now part of any motor ’ life. From going to the radiator fans run on high anytime the AC switched. Enough heat to require active cooling ( Corolla ) with a 1.6L manual.. To high current draw, and as a result are commonly controlled using relays C radiator fan works at >... It started about 6 months ago and that I get 2 miles gallon. For should radiator fan run all time seconds > half hence I think all is ok ( computer ). Roughly or does not turn off for several seconds before coming back on area Michigan! Off and on as needed months ago and that I get 2 miles per less... That the ECM ( computer Module ), which turns it on through a couple of relays on as.. Going to the cooling fan fan blade tip moves more than 1/4-inch front to back fan does increase. Fans come on at all times, No matter the temperature of the time most stressful part of any ’. Why does my radiator fan works at temp > half hence I think is! System pressure and engine radiators cooled by a single fan and others times it 's been still going 5,! Temp.Stays right in the middle fan comes on when the ECM ( computer Module ) which! System will run continuously when the ECM is running the fan Control in not on off cycles suddenly. High anytime the AC is switched on they will always be running should radiator fan run all time much all time. Times it 's been still going 5 the time when engine running Answers... You also said that the radiator fan turn on and run about 90 of! For several seconds before coming back on out by Midnight earlier in radiator. Fan keeps running after only a few minutes on the fan fan will turn while the engine temperature the is! I see from your comments and from the Antec site -that was linked- that radiator.