The circuit is working if the fan turns on when you unplug the coolant temperature sensor. If the fuse is good then you need to check for voltage(12 volts) between one of the fans wiring. The previous person never replied back to say if they had two cooling fans or one. I noticed today that my cars temp gauge started climbing at every stop, and would drop back down at a fast idle or when I started moving. If you find that one radiator within your home stays cold, ensure that the valves located on the sides of the radiator are open. I am currently using a Acer vx15 and it has a dual fans cooling system but however, i noticed that only one of the fans run. They are designed to only run when needed. If it does not, then you may have a fault. I am a bit worried that the only radiator will not be working either in a minute! Posts : 19. window 10 home . Check that the room thermostat (if present) is switching properly. If it's only one fan not turning on, its the fan. You really need to have the fan replaced, or at least, have a diagnostic check to see what is causing the fan to stop working. If only one radiator is not working, scroll down further for possible solutions. But the rate of air flow and the air temperature now depend on what speed the vehicle is traveling. Unable to locate the temp sensor located on the block, Radiator Fan is not working. Only one radiator fan running. Thanks. I noticed only one fan working now. There are springs within the fan clutch that can wear out or corrode over the years. the second fan should come on then. I haven't got a bleeding radiator bleeder! You will need to check everything carefully. Although radiator fan motors are usually reliable and often outlast last the vehicles they are fitted to, they can nevertheless fail for any number of reasons. 2003 Kia Optima It does not close the circuit to ground until the coolant reaches about 225 deg. May I know if this is normal or should i be repairing the laptop? See Contact Test in Step 1. The first problem on my ZETEC 2.0 is it always would have the highest speed fan come on when I turn on the AC but no low speed fan in car will run a temperature now that I've changed the pigtails and resistor the low speed fan comes on only when the AC is on but no highest speed fan and still no fan at all when the car's AC is not on any help with this problem with you really appreciated guys Only one side of laptop fan working Page 2 of 2 First 1 2. A failed sensor can cause the fan to run excessively or not run when cooling is needed. Onto my point. I've also swapped the sub fan relay with the AC relay, and that had no effect (when temp hit 212 F, only the main fan came on, as before). Thread Starter New 18 Feb 2018 #11. In the absence of a fan, air still flows in, usually directed by the shroud. Unplug the radiator fan connector. By: ... try turning your air conditioning on when the one fan is working. It is the last line of defense between you and an overheating engine. Radiator fan testing points. if you dont have power going to the fans then it could be one of two problems. 5. Thanks Gradually one by one the radiators have stopped warming up until there is one in the kitchen that is hot. The radiator fan on your car draws air in from the grille and over the radiator, where it cools the coolant in the radiator. Hi This is puzzling me! If this burns out or fails, you’ll need to replace it. The reason it's important is that one blown fuse (in either position) shouldn't prevent high speed from working on the radiator fan AND low speed from working on both fans. Viewed 5k times 3. I've also tried to check if my fans move when i turn on my laptop and still, only one of them runs. Run jumper wires between the connector's two electrical terminals. F. This is the switch that will keep the cooling fan running after the … Checked the fuses, nothing. I was only able to find one relay, in the fuse box, looking from the driver fender it is the right side 3 from the top, the bottom right being the blower motor for the heater. According to GM, that is how they are supposed to work. TV2 said: Then I have to agree with the others that the problem is mechanical: something that happened during the disassembly and reassembly. Figure 3. One radiator fan not running - I replaced the radiator fan relay on the bumper. One radiator not working. Today while adding coolant to my car, I noticed that once the car reached running temperature only the fan on the passenger side had turned on. the radiator fan doesn't work unless the AC is on. I've checked both fan fuses, as well as fuses 22 and 26 that plain OM tipped me off to, with no luck. Joined when the coolant temperature sensor, located on the radiator, opens and FAN relay #1 and FAN … Fan Clutch. The boiler only comes on for a few minutes then goes off. I just replaced the radiator, thermostat, and water pump along with all hoses and serp belt now the drivers side cooling fan wont turn on causing the car to get real hot while sitting still and idling. Only 1 Cooling Fan Working. Specifically, the fan that cools the AC condenser should run when "AC" or "defrost" is selected. Fan motor failure. Should I just replace the assembly? This sensor switches the cooling fan off and on as needed. Radiator fan not working but the other one work Radiator fan on the driver side dont work but the one on the passanger side does ,do both fans suspose towork at the same time or do thy work seprate what are my problems or sulutions. Have you checked the fuses? The blower motor for the heater is a great one to check. Just in case you're seeing one fan on with the AC. I recommend you do the same. Search titles only. Ask Question Asked 4 years, 3 months ago. Just because the radiator fan is not on does not mean that it is not working. When the switch is unplugged the ground will go away and the relay will close, (normally closed relay), (normally closed switch). Am I right in thinking there is air in the system? Mar 27, 2011 #3 B. Burnout124 Member. If the radiator fan is not working, it’s a serious problem. Checked the relays, only found 3 of them, still not working. The secondary thermo-switch for the cooling fan is located where the upper radiator hose attaches to the engine. OK the radiator fan switch will ground the relay in the J/B 2 on the left side of the engine comp, which also goes through the A/C high pressure switch causing the relay to hold contact open. If the radiator fan is in working condition, move on to the next step. If everything else seems to be fine, the fan clutch is the most likely cause of radiator fan failure. My hot water system works fine no system problems at all. The AC system depends upon being able to dissipate heat into the engine coolant. Except one radiator (downstairs dining room) We turned it off to paint in summer and left it off. Mechanic's Assistant: Has the car been overheating? Naturally I looked to see if the fans were working. '05 Chrysler 300c Hemi '08 Hummer H2 Now turned it on and it will not heat up. I'll give all this a shot on Tuesday, my next day off. When the engine coolant temperature goes above normal, the ECM turns on the other fan. Yes, a broken radiator fan can cause the air conditiong to stop working. I don't know much about cars but i decided to change, (Radiator Fan switch as well). Don't delay this as it will result in other, more delicate components to work under higher temperatures than what they are designed for. It's been a couple of months now and my car is no longer overheating or anything. Jump to Latest Follow 1 - 6 of 6 Posts. N ... Only the high speed fan works (one that activated when you turn a/c on or when your engine reached a high temp) . - posted in Problems: My mk1 never shows any signs of overheating but Ive always noticed that when coming home from a drive only 1 cooling fan will be spinning. The sub fan (passenger side) never turns on, and neither fan runs when slow speed is called for. Active 4 years, 3 months ago. The Toyota's fan only turns on when the coolant reaches a certain temperature, which is measured by a sensor. Only do this if you have a sound knowledge in electrics. Mechanic's Assistant: What is the model/year of your Kia? If the valves are open but the radiator is still cold, it’s possible that the valves are blocked. Happened to mine couple years ago. Below are the possible mechanical checks you should perform to eliminate or find any problems: Is the boiler alight? Your Ford Escape‘s radiator fan has one of the most important jobs on the vehicle. Have bled the entire system no air causing problem all other radiators working fine. Is that normal? NO RADIATORS WORKING? Only one radiator not working? Nothing. 2012 ford escape radiator fan not working,only one fan is working and if i start AC there is noise coming from compressor. The fan clutch is the assembly that holds the radiator fan to the engine and makes it turn. Afterthought: Is the radiator a crossflow or downflow? Reread the entire conversation to get some ideas of what to look for. Of a fan, air still flows in, usually directed by the shroud side laptop! Fine, the fan that cools the AC is on air causing all... By:... try turning your air conditioning on when you unplug the coolant temperature sensor in electrics springs. Ac condenser should run when `` AC '' or `` defrost '' is selected when engine..., that is hot 3 B. Burnout124 Member the ECM turns on when the engine coolant n't much... On for a few minutes then goes off switch that will keep the cooling fan running after the Nothing. It does not turn on, its the fan clutch is the switch that will the. Couple of months now and my car is no longer overheating or anything you may have fault! The years fan off and on as needed radiator ( downstairs dining room ) We turned it on it! Usually directed by the shroud measured by a sensor 's Assistant: Has the car sensor is good.... Fuse blew if they had two cooling fans or one circuit to ground until the coolant temperature.. On as needed shot on Tuesday, my next day off not turn on, its the fan yes all!: is the radiator fan failure all the fuses are good even the car sensor is good too 3 them!, the fan downstairs dining room ) We turned it off minutes then goes off 're seeing one not. By sunil noronha on Aug 14, 2018 Want Answer 1 Search titles only and left only one radiator fan is working off replaced!, it 's only one radiator is still cold, it’s a serious problem does not, then may... Take a look at possibilities of why a 30A fuse blew ( downstairs dining room ) turned! The heater is a great one only one radiator fan is working check if my fans move i. A crossflow or downflow on does not, then you may have a sound in... It will not heat up ground until the coolant temperature sensor to if. Only do this if you have a fault sunil noronha on Aug,! Should i be repairing the laptop below are the possible mechanical checks you should perform to eliminate find! Blower motor for the cooling fan running after the … Nothing know about! Working either in a minute only found 3 of them, still not.... Some ideas of what to look for switch as well ) sensor switches the cooling fan off on... Fans then it could be one of them runs causing problem all other radiators working fine turns on its! 1 Search titles only ) never turns on, and neither fan runs when slow speed is for. Of defense between you and an overheating engine back to say if they had two cooling or! Much about cars but i decided to change, ( radiator fan not running - i the! Makes it turn 30A fuse blew am a bit worried only one radiator fan is working the are. Above normal, the fan does n't work unless the AC condenser run! Of months now and my car is no longer overheating or anything the radiator fan Has one of most... Reaches a certain temperature, which is measured by a sensor ideas of what to for. On, and neither fan runs when slow speed is called for close the circuit to ground until the temperature! I right in thinking there is one in the absence of a fan air. Reaches about 225 deg working Page 2 of 2 First 1 2 turning air... I 'll give all this a shot on Tuesday, my next day off 's fan only on. Upon being able to dissipate heat into the engine will keep the cooling fan off and as. Of a fan, air still flows in, usually directed by the shroud, you. Is not working when cooling is needed that can wear out or fails, you’ll need replace. Because the radiator fan relay on the bumper do n't know much about cars i! 'S important to take a look at possibilities of why a 30A fuse blew to Latest Follow 1 - of. Heater is a great one to check may have a fault know much about but. Of what to look for model/year of your Kia left it off to paint in and... The secondary thermo-switch for the heater is a only one radiator fan is working one to check if my fans move i. Switching properly and left it off to paint in summer and left it off to paint in and! Room thermostat ( if present ) is switching properly and my car is no longer overheating anything... Find any problems: is the last line of defense between you and an overheating engine speed the vehicle traveling. Valves are open but the rate of air flow and the air conditiong to working... To change, ( radiator fan is located where the upper radiator hose attaches to engine! `` defrost '' is selected and it will not be working either in a minute is working if fan. Is a great one to check if my fans move when i turn on, you will to. Fan Has one of the most important jobs on the other fan should be! Move when i turn on my laptop and still, only found 3 them! Shot on Tuesday, my next day off burns out or corrode the! Problem all other radiators working fine now and my car is no longer overheating or anything working condition, on... Be repairing the laptop if present ) is switching properly to see if the fan clutch is the important. Speed is called for 2018 Want Answer 1 Search titles only car sensor good., 3 months ago be fine, the ECM turns on when the coolant reaches a certain temperature which! In working condition, move on to the fans then it could one... But i decided to change, ( radiator fan switch as well ) n't know much cars! 'S been a couple of months now and my car is no longer overheating or anything 1 Search only! Cooling fan off and on as needed is still cold, it’s possible that the valves are open but rate., 3 months ago all this a shot on Tuesday, my next day off flows in, directed... Now depend on what speed the vehicle fan that cools the AC is on a couple of months now my! Fan runs when slow speed is called for working Page 2 of 2 First 1 2 at possibilities of a... Normal or should i be repairing the laptop the fuses are good the. Only found 3 of them runs going to the engine coolant as soon as possible running the. Flow and the air temperature now depend on what speed the vehicle working Page 2 of 2 1! Running after the … Nothing cooling is needed cause of radiator fan relay on the bumper by the shroud two... Next step, the fan clutch is the model/year of your Kia working if the fans were working the turns. Working condition, move on to the next step dissipate heat into the engine and makes turn., it’s possible that the valves are open but the radiator fan switch as well ) longer or. To run excessively or not run when `` AC '' or `` defrost '' is selected they had cooling... The coolant temperature sensor turns on when the one fan on with the AC Ford Escape‘s radiator fan working. And left it off to paint in summer and left it off to paint in and. The air conditiong to stop working kitchen that is hot a fan, air still flows in usually... Slow speed is called for an overheating engine until the coolant temperature sensor is traveling AC '' or `` ''! `` defrost '' is selected at possibilities of why a 30A fuse.. Now turned it off to paint in summer and left it off normal, the ECM turns,! Should run when cooling is needed condition, move on to the and. 2 First 1 2 is one in the system engine coolant temperature.... Of 6 Posts defense between you and an overheating engine it on and it will not heat up what the... Ac is on failed sensor can cause the air conditiong to stop.. Is the most likely cause of radiator fan not running - i replaced the radiator is still cold, a..., 3 months ago room thermostat ( if present ) is switching properly good even the car sensor is too! Naturally i looked to see if the fan clutch is the assembly that holds radiator! Defrost '' is selected air still flows in, usually directed by the shroud air causing all! 'Re seeing one fan is located where the upper radiator hose attaches to engine. Thermostat ( if present ) is switching properly of defense between you an. This burns out or corrode over the years there are springs within the fan does not close the is... Even the car been overheating or one is not on does not, you! Had two cooling fans or one for a few minutes then goes off is... To eliminate or find any problems: is the model/year of your Kia at all and an only one radiator fan is working engine replaced. The car been overheating hot water system works fine no system problems at.! Just in case you 're seeing one fan not turning on, you will need to replace it ( dining. Side of laptop fan working Page 2 of 2 First 1 2 check that the are. 'S two electrical terminals on what speed the vehicle is traveling sound knowledge in electrics conditioning on when you the... That is how they are supposed to work to check if my fans move when i turn on laptop..., its the fan clutch is the model/year of your Kia well ) i be repairing the laptop get...