Radiator Fan Constantly Running (even When Engine Is Off) - Car Talk - Nairaland. A couple of days ago i noticed that the radiator fan starts running immediately upon start up and is really loud the fan runs continously the first 10-15 min an then goes off. Common codes are P0116 or P0118. Jump to Latest Follow 1 - 14 of 14 Posts. Even with the a/c off and not up to full running temp. Radiator cooling fan turns on and runs constantly when ignition is off. first, should I be concerned, next, is there anything I can do about it without taking it to the garage? Discussion in 'Gen 2 Prius Care, Maintenance and Troubleshooting' started by Cory151, Mar 5, 2015. As I mentioned in a few posts I had an issue with my 2003 Corolla where the radiator fan was always running with key on. 2. 2010 Ford F150, Radiator fan seems to be running on high more than it should. Page 1 of 3 1 2 3 Next > Cory151 Member. Also keeping your condenser clean reduces bug restriction, yes we have bugs up here. Mar 8, 2017 #1 Firstly i want to say hello, as it's my one of the first posts on this forum. I'm having an issue with my radiator fans, they are constantly running on high speed. 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. Thermostat has been replaced. 190 Posts . My 2001 old radiator fans run constantly after ignition so can anyone give a solution. I looked in the engine bay, and under the ttruck, but see no signs of a coolant leak anywhere. 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. Hello everyone. I have replaced the module and the fan, since it damaged the last fan by constantly running. This often happens when there it is taking longer for the radiator to cool the hot "coolant" to the right temperature. Thread starter Ferin; Start date Mar 8, 2017; F. Ferin New member. Reply 1: This is a couple possible things. its most likly your fan relay switch located behind the right headlite Mar 23, 2009 | 1999 Jeep Grand Cherokee. The fan is a variable speed fan that will be running pretty much all the time. What could be the cause and how do I troubleshoot this? Also, sometimes I get a very faint wiff of coolant after parking. The fan should not run with only one side powered. The only time it doesn't do it is when I turn the fan off inside the car. No check engine or warning lights. 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. All the coolant temp sensors seem to be working. Radiator fan in my Cruze rarely ran, refused to use the AC in town, brief periods, just wears it out and not enough time to blow out the evaporator. Asked by Visitor in Chicago, IL on . Electric radiator fans are engaged via the vehicle's computer system. Radiator fan wont shut down run constantly not running hot. The cooling fan on my 2007 Ford Crown Victoria constantly runs. Electric radiator fan runs constantly. When either of these switches open, the fans are supposed to turn on. Fan kicks on about 30 seconds after vehicle is started and is extremely loud. If only radiator fan operates it can only be problem with fan relay 1, pressure switch, ECU, or wiring. Radiator cooling fans run constantly. Radiator fan runs constantly - V6 3.0 Diesel 2010 XFS. 0 votes . Ford Crown Victoria Cooling Fan On Constantly 2 Answers. Thank.. ... a/c blows cold air in house but the outside condenser fan constantly runs and th... Condenser fan will not stop running. Both radiator fans run contantly. Even kicks on when its a cooler day. Switch on or off. Fan switch. ... 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. I found the sensor that controls the gauge but I can not locate the engine temp sensor sending unit. This happens even when the engine is cold and the weather outside is cold. they'll run for about 8 to 10 seconds, kick off, then startup again about 10 seconds later. Vehicle: 2006 Mercedes C230 V6, M272 engine Frustrated Tdl785 1 Answer Electric radiator fan will not shut off. ... 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 comes on as soon as the car is started. Most modern vehicles use electric cooling fans to help pull air through the radiator so that it can keep the engine cool. Most cooling fans use electric motors that have a moderate to high current draw, and as a result are commonly controlled using relays. 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. Joined Mar 7, 2017 Messages 11 Reaction score 0 Points 0 Location Surrey/UK. An electric fan SHOULD NOT run all the time. 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. A mechanical fan WILL spin as long as the engine is running, but it will only 'lock up' when needed. Trane XB1000 unit: I have replaced the contactor in the outside unit. Bench tested fan relay. I bought this van used. I have a 2000 ford windstar and the fan now runs constantly. Is the cooling fan supposed to run after shutting off your car. The radiator fan constantly runs as soon as the engine is started. Sent from my iPhone using Tapatalk As soon as I start up it starts running. Hi. I recently did Mumbai - Bangalore - Mumbai and also Mumbai - Shirdi- Mumbai and the radiator looks quite clogged. It’s not uncommon for the radiator fan to run more frequently from time to time. 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. On the highway with that large radiator and a good 55-70 wind, sufficient enough for radiator cooling with the fans. It ramps up and down in speed depending on load, A/C system pressure and engine temperature. Twice today it was running when I left it and when I came back. 27 people found this helpful ... My son has same problem with high speed cooling fan. CarTalk.com Blogs Car Info Our Show Mechanics Files Vehicle Donation. Never noticed it on my last Subaru. Sat. 2003 BMW 325i. Radiator fan runs constantly. 2018 3.6R outback touring. What's happening? The vehicle's ECU was swapped some weeks back but all … The fans don't run for the first minute or so after starting the engine, but once they kick on, they don't stop. Fan runs on high with the switch ON or OFF. Thought the fan was supposed to kick on when it reached a certain temperature then goes off once the temp drops. Is the radiator fan suppose to run as soon as the engine is started? Posted by Anonymous on Dec 31, 2013. is there any idea as to why this is happening.i can leave the car standing for days, but the fan still comes on. From what I understand, the fans will run if the ground is taken away - as the relays are wired backwards from the norm. Replaced coolant 4 days ago. If you just push the Auto button, the A/C system will run until you push the A/C button to turn it off. Temperature dial has since been working flawlessly for 5 days without this weird ghost radiator fan problem. Have you checked the fan relay to make sure it hasn't burned internally and is now stuck on? Doesn't matter if the ac is on or not, the cooling fans on the rad kick on and off constantly. This can be caused by coolant being contaminated or obstruction of debris inside the heater core or other cooling system components. The yellow service light stays on too....Is this a sensor / relay problem. the mechanic said, it will start only when the temp goes up?? They are wired normally closed through the a/c switch and rad. Also stays on when driving down the highway. New fan. my radiator fan runs constantly? The fan then turns off when the engine is shut off. Never noticed it after owning this one over a year. If it has failed, it … Even does it on a cold startup....I live in Canada and the temp outside is near freezing. Radiator fan constantly run high. Not only was the radiator fan always running, but it was running on high speed (these cars have one fan that runs at 2 speeds; low and high). asked Sep 1, 2017 by David '06 Mercedes C230 Sport V6 M272 engine. The air conditioner is off and the engine is not even warm. Fan cooling radiator runs constantly at high speed & eventually emission control light comes on dash after a few - Answered by a verified AU Auto Mechanic. Jump to Latest Follow 1 - 6 of 6 Posts. The Chrysler Minivan Fan Club Forums. March 02, 2010. Once the engine is warm, the radiator fans runs constantly, even when outside temp is in the 40's. Cooling fan runs constantly. M ... One item I keep forgetting is that the fans run constantly, even in colder temps. My radiator fan runs constantly. Actualización: as bad as this may sound, I am not very familiar with the ins and outs of the vehicles. The electric fan run if the engine is on always. The cooling fan relay is the relay that controls the engine’s cooling fans. Writer Bio. I replaced the radiator fan switch - no change. We use cookies to give you the best possible experience on our website. Things I have already done: 1. Throwing codes P0116, P0118 and P0128. The AC system requires air be passing over the evaporator core (in front of the radiator) in order to function efficiently. Radiator Cooling Fans Run Constantly. Don Bowman has been writing for various websites and several online magazines since 2008. Hi, 1. Very often, cars will run the cooling fan constantly when the HVAC system is in an air conditioning mode (Min/Max AC, Blend, Defrost). I troubleshoot this headlite Mar 23, 2009 | 1999 Jeep Grand Cherokee of.: I have a 2000 ford windstar and the temp goes up? 23, 2009 | 1999 Grand. Shut off and how do I troubleshoot this, radiator fan switch - no change my son same! Fan still comes on as soon as the engine is shut off Cory151 Member when ignition off!, radiator fan to run as soon as the engine is on always 5 days without this ghost. 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