Mine does it, the A/C is always running on and off regardless of temperature (unless set to low where it's constantly running the A/C), vent selection, auto etc. When I turn the ignition ON, the cooling fan turns off. I drove a friend's car and when i came to a stop, i discovered that the radiator fans are misbehaving. Your Chevy Cruze‘s radiator fan has one of the most important jobs on the vehicle.It is the last line of defense between you and an overheating engine. So i added and And it's a cold day today (14 Celsius, 57 F) , so it's not like my engine needs to be cooled. Looked everywhere and can't find anything about this. Popped open the hood, and sure enough the cooler fan was running loudly. Even kicks on when its a cooler day. By continuing to use this site you consent to the use of cookies on your device as described in our cookie policy unless you have disabled them. I turned it off and took the key out and it continued to run. RADIATOR AND CONDENSOR FANS GO ON FOR 10 SECONDS AND OFF FOR 6 SECONDS IF I HAVE HEAT OR A/C OR CLIMATE CONTROL ON. You will notice that the car will constantly be hot and stuffy as a result. Has anyone else experienced this before? The yellow service light stays on too....Is this a sensor / relay problem. It went The cooling fan starts running as soon as the ignition is turned on, even though the engine is dead cold. Radiator Fan stays on. I have repaired all of the damage, but there is one issue that I cannot figure out. He replaced the thermistor, it still runs nonstop. if dash fan is off it does not trip. 2013 EX V-6. Not there either I'm lost now the fan turns on as soon After getting home , i noticed there was no coolant in the reservoir. If I press the A/C button to turn off the A/C the fan will stop kicking in The dealer says they are not. Both radiator fans run constantly at high speed from the moment the car has power. I boiled his old thermistor and saw it change from 2.5 k ohms I know it started about 6 months ago and that I get 2 miles per gallon less now. Hi. Re: Radiator Fan Constantly Running (even When Engine Is Off) by Zaikon ( m ): 9:08am On Nov 16 , 2014 The only time it does not run is when I have the ignition in "Acc" or "off", which only runs the radio or shuts the power off respectively. The trigger is the thermostat in the radiator of your vehicle. My independent mechanic says my radiator fan and AC fan are cycling too much. If I change it to blow on my feet or face it stops cycling. Depressing Have a 2004 WRX w/about 133,000 miles on it. Laptop fan is an important component of the laptop cooling system. I rode it yesterday for about 20 minutes and when I parked it could hear the radiator fan was on. Is the signal to turn on and off coming from a thermostat somewhere near the fan? BUT When the temperature of the laptop rises, the fan will start to rotate. Noticed recently that both radiator fans have been coming on more often and/or not turning off. Unsure why. i have a 2012 chevy cruze ltz, i noticed that when i turn on the heater or a/c that my radiator fan cycles really fast than normal, every 20 to 30 seconds comes on and goes back off in about 5 seconds. As for the belt take a look at it and check for Cooling fan system not working completely If you find that your Volvo’s A/C system does not come on even when the parts under your hood become too hot, the cooling fan module may not be working at all, meaning it’s definitely time to find a replacement . I just bought a '06 750. It is what sends the signal for the fan. His radiator fan turns on as soon as you turn the ignition key on. I don't hear it The fans run for 5 seconds and then are off for 20 seconds. However, if the laptop does not run any software at all, and your laptop fan always on, that may be caused by the system set up. I've noticed when sitting at a stop light lately that the radiator fan will rev up to a high speed and run for about 5 seconds, turn off for almost exactly 10 seconds, and then repeat the process the process over and over. My 2013 Hyundai i10 has one fan and as far as I can see one coolant temp sensor. 2 Answers 2006 Corolla LE , A/C Compressor trips even with A/C off everytime the engine cooling fan comes on if the dash fan in the car is on. The computer turns the cooling fan on and off when it receives a temperature indication from the coolant temperature sensor. I am a new owner of a 2010 C300 4Matic that I bought from an insurance auction - the car was a salvage car due to a front impact. Your cooling fan operates through a series of circuits. Q: For some reason, every time I turn on the ventilation system for the cabin, the radiator fan goes on and off constantly and in one instance I got a warning on the iDrive screen that the engine is overheating. It turns on for 5-10 seconds, then turns off for ~5 seconds. But when Depending on the wiring setup of the vehicle, this may cause them to stay on even when the vehicle is off, which will drain the battery. Your cooling fan comes on when the car reaches a particular temperature. We tried swapping relays to rule out a sticking relay. they are constantly running even when i off the ignition. Hello! Local toyota dealer seems to have no answers. The temp. This is the cooling or radiator fan and it is run by the cooling fan switch. the rpm gauge is slightly going up and down, and it seems to be less horse power when i accelarate. As soon as I turn on the ednishion the fan turns on what do you think is rong with it I know its not the fan sensore and cooler sensore also the fan switch sensor and the relay becuase I already changed it what do you supose it could be pls write back a as soon as possible. I figured it would run for 1-2 minutes longer. 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