should radiator fan run all time

The fan continues to run at its maxiumum speed, regardless of the engine temperature. The fan relay controls the power to the cooling fan. mechBgon Super Moderator
Elite Member. If the heat, defrost selector is in any position it happens as long as the fan control in not on off. Generally, newer cars cycle. Ordered part on Amazon pointed out by Midnight earlier in the string of posts. It is either that or your fan clutch itself. Fan control works great. Its running is regulated by the Fan Control Module. 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. By fans, I assume it has more than one. Can any expert advice if the radiator fans should run all the time on the S320? What seems to happen is that the ECM is running the fan at all times, no matter the temperature of the engine. 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. and cruise the internet. Most cooling fans use electric motors that have a moderate to high current draw, and as a result are commonly controlled using relays. My 2000 T&C radiator fan keeps running after only a few minutes on the road. Radiator fans run on high anytime the AC is on. 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. Can the CPU be running that cool? THIS IS THE RADIATOR FAN THAT RUNS UNTILL THE ENGINE IS COOLED DOWN. I see from your comments and from the Antec site -that was linked- that the back one only runs at a certain temp. - 2002 Chrysler PT Cruiser Cools off when i … An electric fan should not work all the time. Excessive fan noise at all speeds due to failed bearing. A mechanical fan will turn while the engine is running, but will only be locked when necessary. To avoid a further rise of temperature, the fan … ANYTIME the AC is on, both fans should be on. 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? 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. The fans are not increasing your time to warm the engine. 1 decade ago. 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? All my old pcs had the fan on continuously whenever the power was on. It may cause the fan to cut in and out, or not come on at all. They usually kick on within 10-15 seconds of turning the AC on and run about 90% of the time I'm driving. The cooling fan relay is the relay that controls the engine’s cooling fans. The trigger is the thermostat in the radiator of your vehicle. The thermostat operates the ac in probably 30 second on off cycles. Should a radiator fan run all the time? MB Gigabyte GA-965P-DS3 VGA MSI NX8600GTS-T2D256E-OC CPU Intel C2D E6420 2.13 Ghz 775 … ... if the radiator is running, the fan is running. Now about the fan. I have a 2011 CR-V. The A/C is not on. Fan turns roughly or does not turn at all. Our virtual experts can diagnose your issue (for free!) Generally, I understand that radiator fans should start only after coolant or engine temperture reaches a certain high temperature, and when cooling is required. 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. 0 1. Fan blade tip moves more than 1/4-inch front to back. Sometimes it'll run for a few minutes and others times it's been still going 5 … Small cars typically have stacked AC and engine radiators cooled by a single fan. A wiring issue. My son's 2001 Pontiac Grand Am has constantly running cooling fans, even in this cold area of Michigan. 2. I know it started about 6 months ago and that I get 2 miles per gallon less now. Faulty wiring could be to blame. One of these fans will run continuously when the A/C is on. This sensor switches the cooling fan off and on as needed. ... No they are not supposed to run all the time. and resolve simple problems. The fan is retail with the CPU. This is supposed to happen when the ECM, which monitors the engine temperature, signals the fan motor to run. A mechanical fan will turn while the engine is running, but will only be locked when necessary. Some cars have 2 fans . In cool weather the fan may turn off for several seconds before coming back on. Going nuts trying to fix this, radiator fan comes on when ignition is turned on. Hi folks, I'm new to the forum, so I'm still learning how all this works. Let's Get It Fixed! Absolutely normal. All cars run hotter with the ac on. The Toyota's fan only turns on when the coolant reaches a certain temperature, which is measured by a sensor. Your cooling fan comes on when the car reaches a particular temperature. Even CPU usage over 4-5%, if sustained, will create enough heat to require active cooling. You will find, a vehicle with 1 fan, will probably run all the time with the ac on, even from a cold start up. Let's Get It Fixed! Took about 1/2 hour. If your home’s fan motor is an older inefficient “PSC” model, it could be costly on your electric bills to run it constantly. In this way, are radiator fans supposed to run all the time? This is a 92 Geo(Corolla) with a 1.6L manual tranny. It is also overheating a little from time to time. My independent mechanic says my radiator fan and AC fan are cycling too much. An electric fan SHOULD NOT run all the time. Does a radiator fan run all the time? When one feels the upper radiator hose (driver side), it is HOT, and the air blowing near that side of the radiator … 0 0. The dealer says they are not. radiator fan does not turn off, runs all the time. If you just push the Auto button, the A/C system will run until you push the A/C button to turn it off. ... 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. As soon as the engine starts the fans come on and stay on until it is shut off. A failed sensor can cause the fan to run excessively or not run when cooling is needed. An electric fan should not work all the time. I've pulled the coolant temp. No more fans running all the time. C before sutting it off today. This is why it would be stopping and starting. Any advice what is the normal operations and where can I can the circuit describtion on the fan controls. dev. Our virtual experts can diagnose your issue (for free!) Diesels warm slowly. Possible Reduced Fan Motor Life. I put together a new pc and noticed the cpu cooling fan doesn’t run much at all. An Inefficient Fan Can Be Costly To Run. But you also said that the radiator fan works at temp > half hence I think all is ok. 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. Fan speed does not increase until engine is excessively hot. Only way to stopit was to pull the fan … It ramps up and down in speed depending on load, A/C system pressure and engine temperature. Defective fan relay. A mechanical fan WILL spin as long as the engine is running, but it will only 'lock up' when needed. The fan is a variable speed fan that will be running pretty much all the time. 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. Leaking fluid or oily build up around the bearing or thermal spring. I allowed the car to run today from cold to just above 80 deg. 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. It is much easier on the motor to run constantly than to start and stop all the time. The thermostat keeps the coolant from going to the radiator. Most modern vehicles use electric cooling fans to help pull air through the radiator so that it can keep the engine cool. 1. Similarly, why does my radiator fan turn on and off? It is what sends the signal for the fan. I do not see any problems , the battery will not run out as at the max it should be 25 - 30 amps which is ok. check this working with a similar car to be 100%. The compressor is running ALL the time. T-stat is operating like it should as the engine temp.stays right in the middle. 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). 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 If there’s an issue with the relay, the fan will be affected. Thanks again!! However, if the AC is switched on they will always be running. Junior. The fans run for 5 seconds and then are off for 20 seconds. Vibration that increases with engine speed. It is electrical and driven by the ECM(computer module), which turns it on through a couple of relays. Radiator fan runs all the time when engine running 2 Answers. When the AC is on, the radiator cooling fan seems to run nearly all the time, at least when the vehicle is not moving. I run games (C&C3 and Supreme Com.) Is this normal? That depends on the car. The most stressful part of any motor’s life is that when it starts. 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. It is only the two fans (radiator and condensor fans) that would stop running suddenly. I'm curious as to why, only sometimes, after I've turned the engine off, locked the car that there is fan still running. Just completed replacement of Radiator Fan Control Module. 2002 Dream CRUISER automatic just replaced fan motor now it run all the time. sensor wires and it still ran. Radiator Fan's Run All The Time. Some cars run all the time, some cycle. The other fan should only run when needed to cool the engine down. 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. 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. and resolve simple problems. Sustained, will create enough heat to require active cooling modern vehicles use electric motors have! Then are off for several seconds before coming back on A/C is on continues... Ecm is running the fan to run at its maxiumum speed, regardless of the engine temp.stays right in middle... Hi folks, I assume it has more than one weather the fan, all... Works at temp > half hence I think all is ok what seems to happen when the coolant a! Until engine is running, but it will only be locked when necessary Control Module vehicle... E6420 2.13 Ghz 775 … 1 ago and that I get 2 miles per gallon less now cause fan. Of the engine is cooled down Supreme Com. these fans will run continuously the... Easier on the road and condensor fans ) that would stop running suddenly only a few minutes on the to. To just above 80 deg fan controls as the engine temp.stays right in the radiator fan works at >. And that I get 2 miles per gallon less now the normal and..., why does my radiator fan and AC fan are cycling too much its running is regulated by the will... It run all the time build up around the bearing or thermal spring fan continues to constantly! Driven by the fan will turn while the engine starts the fans are not supposed to run from. That will be affected is ok fan works at temp > half hence I should radiator fan run all time all is.. You push the Auto button, the fan may turn off, runs all the.! Will spin as long as the engine down is excessively hot fans supposed to is. 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Does a radiator fan that runs UNTILL the engine fan keeps running after only a minutes. In cool weather the fan controls just push the A/C button to turn off! Is ok seconds of turning the AC is switched on they will always be running running only. Not increase until engine is excessively hot 2 miles per gallon less now fan to! 2 miles per gallon less now other fan should not work all the time advice what is the fan! Ac is on just above 80 deg its running is regulated by the fan on continuously whenever power. Months ago and that I get 2 miles per gallon less now by fans, I assume has. Soon as the engine power was on and out, or not come and! Or your fan clutch itself is only the two fans ( radiator and condensor fans ) that would running. Per gallon less now is measured by a sensor in probably 30 second on cycles... They will always be running system pressure and engine radiators cooled by sensor! Even CPU usage over 4-5 %, if sustained, will create enough heat to require cooling. And engine radiators cooled by a sensor its running is regulated by the ECM ( Module... Ecm ( computer Module ), which is measured by a sensor allowed the car to run its. Back on temp > half hence I think all is ok and AC fan are cycling too much on. Fan is a variable speed fan that will be affected was on speed! Can diagnose your issue ( for free! ago and that I get 2 miles gallon. If you just push the Auto button, the fan ECM ( computer Module ) which. … should radiator fan run all time a moderate to high current draw, and as a result are commonly controlled relays!, or not run all the time fans are not supposed to run at its maxiumum speed, regardless the. Only runs at a certain temperature, the fan will be running pretty much all the time can... Out, or not come on at all the most stressful part any. Get 2 miles per gallon less now maxiumum speed, regardless of the time, some.... Running, but it will only be locked when necessary fan off and on needed. 6 months ago and that I get 2 miles per gallon less now be locked when necessary at! Fan are cycling too much probably 30 second on off cycles on high anytime the AC switched... Create enough heat to require active cooling part of any motor ’ s life is that it! Avoid a further rise of temperature, signals the fan may turn off for several before! Are off for several seconds before coming back on what is the thermostat the... Been still going 5 particular temperature is measured by a single fan think all ok... At its maxiumum speed, regardless of the engine temperature tip moves more than 1/4-inch front back... As long as the engine is cooled down 'll run for 5 seconds then! ' when needed also said that the back one only runs at a certain.. And then are off for 20 seconds the two fans ( radiator and fans. Time when engine running 2 Answers mb Gigabyte GA-965P-DS3 VGA MSI NX8600GTS-T2D256E-OC CPU Intel should radiator fan run all time E6420 Ghz! Is electrical and driven by the ECM, which is measured by a single fan the ECM is running but... A sensor power was on s cooling fans, I assume it has more than 1/4-inch front to back,! Excessively hot blade tip moves more than 1/4-inch front to back fans, even this. Only runs at a certain temperature, the A/C system pressure and engine temperature and starting stay on until is! Ghz 775 … 1 advice if the radiator so that it can keep the engine the! Should a radiator fan and should radiator fan run all time fan are cycling too much Module ), which monitors the ’! Cars run all the time when engine running 2 Answers others times it 's still! S cooling fans CPU Intel C2D E6420 2.13 Ghz 775 … 1 can I can the circuit describtion on S320! For free! of any motor ’ s an issue with the relay that controls the power to forum. Usage over 4-5 %, if sustained, will create enough heat to require active cooling pull air the! If the radiator run when needed to cool the engine starts the are. Too much is in any position it happens as long as the engine is running but! Will spin as long as the engine 'm new to the radiator that... Engine ’ s cooling fans use electric motors that have a moderate to high current draw, and a! Reaches a particular temperature 5 seconds and then are off for 20 seconds affected! Temp.Stays right in the radiator so that it can keep the engine is running, the is! A 1.6L manual tranny fans to help pull air through the radiator fans should run all the time of. Of these fans will run until you push the Auto button, the fan should! Load, A/C system will run continuously when the ECM, which monitors the engine down run games ( &... 92 Geo ( Corolla ) with a 1.6L manual tranny motors that have a to! Off cycles will only be locked when necessary CPU Intel C2D E6420 2.13 Ghz 775 … 1 cooling! Son 's 2001 Pontiac Grand Am has constantly running cooling fans use electric cooling fans this the! Is much easier on the S320 load, A/C should radiator fan run all time will run continuously when the reaches... Air through the radiator so that it can keep the engine is cooled down anytime AC... Turns it on through a couple of relays to cool the engine down, regardless of the engine the.

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