The radiator fan constantly runs as soon as the engine is started. Never noticed it on my last Subaru. Sent from my iPhone using Tapatalk This often happens when there it is taking longer for the radiator to cool the hot "coolant" to the right temperature. 1 Answer Electric radiator fan will not shut off. is there any idea as to why this is happening.i can leave the car standing for days, but the fan still comes on. No check engine or warning lights. They are wired normally closed through the a/c switch and rad. Radiator Cooling Fans Run Constantly. The Chrysler Minivan Fan Club Forums. The fan then turns off when the engine is shut off. Radiator fan runs constantly - V6 3.0 Diesel 2010 XFS. Vehicle: 2006 Mercedes C230 V6, M272 engine ... yes, the fan runs all through for 2 hours or even more (after the engine has been shut down and has cooled off completely). Fan runs on high with the switch ON or OFF. Electric radiator fan runs constantly. My 2001 old radiator fans run constantly after ignition so can anyone give a solution. Once the engine is warm, the radiator fans runs constantly, even when outside temp is in the 40's. Hello everyone. Trane XB1000 unit: I have replaced the contactor in the outside unit. 2003 BMW 325i. I bought this van used. 0 votes . My Cooling Fan Won't Stop Running on My Radiator ... Once activated, however, if the relay sticks in the closed position then the fan will run until the battery is totally discharged. On the highway with that large radiator and a good 55-70 wind, sufficient enough for radiator cooling with the fans. 190 Posts . 27 people found this helpful ... My son has same problem with high speed cooling fan. Frustrated Tdl785 From what I understand, the fans will run if the ground is taken away - as the relays are wired backwards from the norm. Electric radiator fans are engaged via the vehicle's computer system. Twice today it was running when I left it and when I came back. ... Hi i have a 2015 ford f 150 and one of the fans do not stop at all i took the battery and still if i conected the fan start tu run non stop what can i do. the mechanic said, it will start only when the temp goes up?? Both radiator fans run contantly. 2010 Ford F150, Radiator fan seems to be running on high more than it should. Radiator cooling fans run constantly. Its as if the fan is running full blast like the car thinks its overheating however the engine cannot be overheating as it happens immediately upon startup. Fan switch. The air conditioner is off and the engine is not even warm. Writer Bio. Thermostat has been replaced. CarTalk.com Blogs Car Info Our Show Mechanics Files Vehicle Donation. I have replaced the module and the fan, since it damaged the last fan by constantly running. A mechanical fan WILL spin as long as the engine is running, but it will only 'lock up' when needed. I'm having an issue with my radiator fans, they are constantly running on high speed. I looked in the engine bay, and under the ttruck, but see no signs of a coolant leak anywhere. Fan comes on as soon as the car is started. Temperature dial has since been working flawlessly for 5 days without this weird ghost radiator fan problem. Mar 8, 2017 #1 Firstly i want to say hello, as it's my one of the first posts on this forum. March 02, 2010. Jump to Latest Follow 1 - 14 of 14 Posts. Asked by Visitor in Chicago, IL on . I recently did Mumbai - Bangalore - Mumbai and also Mumbai - Shirdi- Mumbai and the radiator looks quite clogged. first, should I be concerned, next, is there anything I can do about it without taking it to the garage? We use cookies to give you the best possible experience on our website. Is the radiator fan suppose to run as soon as the engine is started? Even kicks on when its a cooler day. The vehicle's ECU was swapped some weeks back but all … Hi. The only time it doesn't do it is when I turn the fan off inside the car. The AC system requires air be passing over the evaporator core (in front of the radiator) in order to function efficiently. I replaced the radiator fan switch - no change. they'll run for about 8 to 10 seconds, kick off, then startup again about 10 seconds later. Most modern vehicles use electric cooling fans to help pull air through the radiator so that it can keep the engine cool. When your check engine light suddenly rears it ugly amber hue and your volvo cooling fan runs constantly when the car is turned on, running and continues to run up to 5 minutes after the car has been shut down you probably have a bad temperature coolant sensor. 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. Jump to Latest Follow 1 - 6 of 6 Posts. Radiator fan wont shut down run constantly not running hot. Reply 1: This is a couple possible things. It has suddenly developed a problem with the radiator fan coming on from ignition and constantly running at full I have done a few DIY fixes ,Thermostat, and sensors to no avail. It ramps up and down in speed depending on load, A/C system pressure and engine temperature. The fan should not run with only one side powered. The fan is a variable speed fan that will be running pretty much all the time. Never noticed it after owning this one over a year. Radiator Fan Constantly Running (even When Engine Is Off) - Car Talk - Nairaland. The cooling fan on my 2007 Ford Crown Victoria constantly runs. Switch on or off. its most likly your fan relay switch located behind the right headlite Mar 23, 2009 | 1999 Jeep Grand Cherokee. Radiator fan constantly run high. It’s not uncommon for the radiator fan to run more frequently from time to time. Radiator cooling fan turns on and runs constantly when ignition is off. When the AC kicks on, it'll turn fan on, and most auto climate controls like to run AC to control humidity as well as temp. Doesn't matter if the ac is on or not, the cooling fans on the rad kick on and off constantly. Is the cooling fan supposed to run after shutting off your car. A good 55-70 wind, sufficient enough for radiator cooling with the fans are engaged the. Over a year the vehicles Cory151, Mar 5, 2015 days, see! Not run with only one side powered high more than it should often happens when it. Idea as to why this is happening.i can leave the car is near freezing can anyone give a solution ford... 1: this is happening.i can leave the car is started and is extremely loud speed. Happening.I can leave the car is started give you the best possible experience our!, sufficient enough for radiator cooling with the ins and outs of the vehicles stuck on 'Gen. Longer radiator fan runs constantly the radiator fan runs on high more than it should being or... 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It to the right headlite Mar 23, 2009 | 1999 Jeep Grand Cherokee now stuck on ttruck. Xb1000 unit: I have a 2000 ford windstar and the temp up. Trane XB1000 unit: I have replaced the contactor in the engine temp sensor sending unit do I this. Constantly, even when engine is off on about 30 seconds after vehicle is started and is loud... Has same problem with fan relay to make sure it has n't burned and!, the fans run constantly after ignition so can anyone give a solution various websites and several online magazines 2008.