Hello! Already replaced ECT. It is. I drove a friend's car and when i came to a stop, i discovered that the radiator fans are misbehaving. if dash fan is off it does not trip. His radiator fan turns on as soon as you turn the ignition key on. Looked everywhere and can't find anything about this. Noticed recently that both radiator fans have been coming on more often and/or not turning off. Re: Radiator Fan Constantly Running (even When Engine Is Off) by Zaikon ( m ): 9:08am On Nov 16 , 2014 The fans run for 5 seconds and then are off for 20 seconds. So i added and 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. This is the cooling or radiator fan and it is run by the cooling fan switch. However, a broken fan could be confused with a fan that simply has not kicked in yet. Have you ever noticed that fan that turns on and off in your engine while you’re stuck in traffic? I have a 2011 insignia which suddenly has the annoying problem with the cooling fan running constantly, when i start the car and travel about 100 yards. It went if dash fan is off it does not trip. 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. I rode it yesterday for about 20 minutes and when I parked it could hear the radiator fan was on. HAPPENS EVEN WHEN CAR IS COLD.IF NOTHING IS ON THEY DO NOT GO ON. they are constantly running even when i off the ignition. When the temperature of the laptop rises, the fan will start to rotate. The radiator fan on my 2009 RAV4 keeps switching on and off. If the heat, defrost selector is in any position it happens as long as the fan control in not on off. My radiator fans are all out off whack (simply put). The dealer says they are not. the rpm gauge is slightly going up and down, and it seems to be less horse power when i accelarate. I don't hear it I figured it would run for 1-2 minutes longer. Depressing Has anyone else experienced this before? This is one reason why information on when a radiator fan is suppose to start can be beneficial to vehicle owners. My independent mechanic says my radiator fan and AC fan are cycling too much. I replaced water pump and radiator and coolant temp sensor. 2013 EX V-6. 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. 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. When I turn the ignition ON, the cooling fan turns off. 2006 Corolla LE , A/C Compressor trips even with A/C off everytime the engine cooling fan comes on if the dash fan is on. Laptop fan is an important component of the laptop cooling system. If I press the A/C button to turn off the A/C the fan will stop kicking in But I don't think it is is working correctly; it cycles on and off continuously. And it's a cold day today (14 Celsius, 57 F) , so it's not like my engine needs to be cooled. It is what sends the signal for the fan. The cooling fan relay essentially functions as the switch for the engine’s cooling fans, and is therefore an important electrical component of the vehicle’s cooling system. 2010 Ford F150, Radiator fan seems to be running on high more than it should. 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. Is this normal? After getting home , i noticed there was no coolant in the reservoir. How can I turn off the radiator fan. I have repaired all of the damage, but there is one issue that I cannot figure out. If the radiator fan is not working, it’s a serious problem. Radiator Fan stays on. Not there either I'm lost now the fan turns on as soon Hi. 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. Have a 2004 WRX w/about 133,000 miles on it. It turns on for 5-10 seconds, then turns off for ~5 seconds. But when this is bad. 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.