should radiator fan run all time

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