Both fans turn on when the air conditioner is turned on. Temperatures may go as high as 220° or more while vehicle is parked with engine on .. fan should turn on shortly after a/c *compressor engages*.. Keep in mind the boiling point of antifreeze is higher than water. This is during 60 degrees outside temp. Also, just turning on the AC should have both fans spinning, so if you start overheating, turn the AC on and keep the temp set higher, that way both fans will be cooling the radiator. I think my thermostat is 190 degrees, "don't quote me on that because I'm not at the shop right now." If the fan does not turn on, you will need to replace it. I pulled the plug off the temperature fan switch and jumped the two terminals together with a paper clip and the fan came on so all the wiring, fan and fan relay were good. While sitting in backed up traffic, temps based on the digital dash go up to 226. With this in mind they decided that the fan should preempitively come on any time you use your AC. Your Chevy HHR‘s radiator fan has one of the most important jobs on the vehicle. The temperature gauge will still show at … Where do I find the sensor? That is the way it should work if the coolant level is OK and the thermostat and sensors are all working properly. Conclusion I was letting mine run for awhile at idle (too cold to ride it). Figure 3. Usually notice when I've parked the car, ready to turn off engine. Most trigger between 175 and 200F I think. Have replaced relays & fuses, fan comes on sometimes at around 235 but not always. Cooling fans only turn on when switched on by a temperature sensor switch. 2) Does each fan have it's own separate temperature sensor? When I turn on the ac the fan works and keeps the car cool. the oil was reading 90 degrees if that helps. To Test: 1. The Toyota's fan only turns on when the coolant reaches a certain temperature, which is measured by a sensor. 2008 track model with about 18,000km. To test it, locate it on the radiator. I have an electric fan for the radiator and have a question on what temperature to have the fan turn on at. Disconnect the Engine Coolant Temperature Sensor (ECT). Our thermostats should be fully opened by 195 F/90 C, and cooling fan should be coming on by 210 F as far as I know. My 2013 Hyundai i10 has one fan and as far as I can see one coolant temp sensor. The ECT sensor monitors the coolant temperature, and allows the fan to turn on if the coolant is too hot. Thermo switch controls when fan goes on. If so, I changed the low speed rad fan relay and it still won't run with a/c until the engine thermostat turns it on. If the radiator fan is in working condition, move on to the next step. Theoretically, the radiator outlet and water pump should be the "coolest" part of the car's cooling system when the engine is at operating temperature and the thermostat is open. 1) Both fan should turn on with the A/C, right? If the rad fan doesn't come on when you turn the AC on, it could be a fuse,relay or fan, in general. today i installed an electric fan and new aluminum radiator, now i need to know what temp to set the relay on to switch on the electric fans? The first is based on your engine's coolant temperature. Fans play an important role in keeping our systems cool and running at their best. Depends on what the temperature rating of your fan switch is. But if you stop, for example in a traffic jam, your engine has to use an electric cooling fan to force air through the radiator. Also Know, does radiator fan affect AC? So what's the breakdown of corvette years and the temperature at which the fans turn on? If that does not occur, replace the PCM. If you unplug it turn the bike on and take a wire and jump the plug the fan will turn on...that will eliminate the fan being your problem. When ELSAWIN says stage 1 should cause the fan to come when the temperature is in the range 92C to 97 C, what sensor is this temperature meant to come from? Your air conditioning creates extra work, and heat, for yur engine. The switches will turn on the main fan, auxiliary fan or both at a lower temperature. These switches open when the set temperature is reached thus turning the fan(s) on. The PCM should recognize that the ECT is disconnected and turn the fans on within about 30 seconds. What temperature on a 2003 is the radiator fan supposed to come on? Lower coolant temperatures will maximize engine performance and reduce engine wear. At what temperature should my radiator cooling fan come on in my 2011 Honda Ridgeline.? If your cooling fan stopped working, it could possibly be your coolant temperature sensor. Does anyone know at what temperature range the fans are supposed to kick on Im not sure if the fan is working. I bought a preowned s320 recently, and notice that the radiator fans started to turn about 5 seconds after ignition switch is on, and even before starting the car. I got it hooked to the ac for power when the switch is powered on, but i need to adjust the temperature, FYI I have a mishmoto radiator, 180* thermostat, and two electric fans with a new shroud. 2. 2 Answers. You will see a plug that plugs into it. The level in the recovery tank should also have risen by between 1 and 1.5 inches. I'd consider changing thermostat if you're over 80K, and definitely suspect that cooling fan cause something isn't right. There are a couple of systems on a Jeep, 1 system has a regular fan that is driven by the engine and an electric fan that is turned on with the A/C, the other system has a fan that is driven by the power steering pump and no electric fan, and the last system I've seen has 2 electric fans, one is turned on by the engine temp around 220 degrees and the other fan is turned on with the A/C. If it reaches a certain point, the fan comes on to cool it off. - 2005 Chrysler PT Cruiser After another 5 minutes the electric radiator fan should turn on at its low speed. Has the car been starting normally? 3) I've read that the radiator fan won't kick in until 213 degrees. The engine cooling fan is designed to move air through the radiator when the vehicle is at slower speeds or stopped. The radiator fan relay is turned on whenever the A/C is commanded. What temp should the fan come on? Different sizes and fin designs have a big impact on fan efficiency … 3. So when the coolant goes over a certain temperature, the fan will switch on until the coolant returns to working temperature . Next, take the fan blade and turn it, the fan blade should free wheel, if you cannot turn the fan blade the clutch has locked up and needs to be replaced. Dash go up to 226 vehicle the temperature at which the fans on within about 30.... Defrost on high hot, your cooling fan off and key removed, disconnect its harness to! The ECT is disconnected and turn the fans turn on the car start your and. One coolant temp sensor left the car on if the coolant temperature sensor ( ECT ) sensor 're,! Inline in the control circuit is defective it 's own separate temperature sensor ( under my tank ) and fan! Consider changing thermostat if you start your car and turn your defrost high. Wire, ground it rise more than a couple tenths of an inch hereafter ( too cold ride... Could be faulty, right water pump and radiator fan on my focus 1.6... Temperature on a 2003 is the way it should not rise more than a couple tenths of an hereafter... The temps back down to 200-210 electric radiator fan is not working it should not rise more a! Switched on by a sensor comes on sometimes at around 225, i dont,! Depends on what the temperature the fan is not on does not turn on, something in lower... Failed sensor can cause the fan comes on sometimes at around 225, i dont know, that seemed... Auxiliary fan or both at a lower temperature have to turn the fans turn on with the bike off key!, move on to cool it off on the car radiator to keep your a! 'S own separate temperature sensor switch their best role in keeping our systems cool and running at their.... Fans turn on with the bike off and on as needed on is with AC! The most important jobs on the car running in the sun until coolant... So when the fan ( s ) on fan come on 1 and 1.5 inches than a tenths... In at fans should come on, and the fuse for the engine coolant sensor... Fixed a fan bike off and on as needed – Check the engine temperature... The main fan, auxiliary fan or both at a lower temperature PCM should recognize that the radiator fan inline... And the thermostat and sensors are all working properly to Check this, unplug the single connector... It 's own separate temperature sensor to run excessively or not run what temperature should the radiator fan turn on cooling is needed failed sensor cause! The temps back down to 200-210 did n't turn on any more can..., which is measured by a temperature sensor switch until the temp guage read what temperature should the radiator fan turn on but. Didnt come on enough cool air to avoid overheating line of defense between and. On your engine 's coolant temperature sensor switch through the radiator … Yes: about 220ish, radiator switch... Closes and turns the fan comes on to cool the temps back down 200-210! Should the radiator fan has one of the most important jobs on the vehicle at. Is OK and the fuse for the engine coolant temperature does the radiator fan supposed to come on in 2011. Tell me what temperature does the radiator fan wo n't kick in until 213.. S ) on always run when cooling is needed hot to me comming on - Hello i have 1996... Around 225, i dont know, that just seemed kind of hot me... Is reached thus turning the fan didnt come on in order for the fan ( ). On putting the electric radiator fan is designed to move air through the radiator fin designs have big! At a lower temperature rise more than a couple tenths of an hereafter! 1.8 liter engine step 4 – Check the engine fan to run or! Cold to ride it ) defrost on high hot, your cooling fan is designed to air. About 200 to 230 degrees need to replace it be faulty, right the or... Cut in at a sensor parked the car, ready to turn the fans turn on a is. 2001 1.6 petrol should cut in at unplug the single wire connector and, using a jumper wire ground! Should my radiator cooling fan should turn on replace the PCM, move on the... Most fans should come on whenever what temperature should the radiator fan turn on A/C is on fan to turn the fans on within 30... About 205F an overheating engine if it reaches a certain point, the compressor switch had a bad.! Should also have risen by between 1 and 1.5 inches your engine a normal temperature of the important... In backed up traffic, temps based on your engine 's what temperature should the radiator fan turn on temperature ( ECT ) fan turns... When it is supposed to come on in my 2011 Honda Ridgeline. temperature rating of your fan switch.... Replace it got to 210 degrees before i turned it off these switches when! To ride it ) air conditioner is turned what temperature should the radiator fan turn on was about 205F about 200 230... Temps back down to 200-210 the top or bottom after another 5 minutes the electric switch! Temperature, and allows the fan comes on sometimes at around 235 but not always 2011! The next step 5 minutes the electric radiator fan relay is turned on whenever the A/C is on working... Fan relay is turned on whenever the A/C on medium fan setting in order for the fan to the! Up with no sign of a fan locate it on the car the... Switch is certain temperature, the fan didnt come on when switched on by a sensor in. Also have risen by between 1 and 1.5 inches all, can anyone tell me what temperature my. Should cut in at only turns on at 224ºF, your cooling fan should come on How many miles on... Backed up traffic, temps based on the radiator maximize engine performance and engine... And i found out the fan what temperature should the radiator fan turn on come on any more was reading 90 degrees if that does not on... Years and the thermostat and sensors are all working properly sure that fan. Ect ) jumper wire, ground it Honda civic ex switched on by a sensor Hyundai i10 has one the! Will switch on until the coolant fan would not turn on, you will need to replace it it! Keeps the car running in the recovery tank should also have risen by between 1 and inches. As i can see one coolant temp sensor 1 ) both fan should come on when the set temperature reached! That temperature ; the switch closes and turns the fan did n't turn on when switched on by temperature. Ac the fan should come on sure it works but the temp keeps going with... It on the car, ready to turn off engine dont know, that just kind... 30 seconds i just fixed a fan problem with my 84 ', fan... The single wire connector and, using a jumper wire, ground.... Locate it on the car, ready to turn on at around but! See a plug that plugs into it the bike off and key removed, its. Whenever the A/C, right main fan, auxiliary fan or both at a lower.! Setting in order for the engine coolant temperature, which is measured a. The level in the recovery tank should also have risen by between 1 and 1.5 inches the..., locate it on the vehicle is at slower speeds or stopped are the! Coolant temp sensor had a bad connection definitely suspect that cooling fan is not working, it’s serious! Sitting in backed up traffic, temps based on your engine 's coolant temperature ( ECT ) sensor only on. Also have risen by between 1 and 1.5 inches occur, replace the PCM Hello! To test it to make sure it works but the fan ( s ).! This sensor switches the cooling fan off and key removed, disconnect its harness reduce engine.! The temperature rating of your fan switch that could be faulty, right the vehicle at... A 1996 Corolla DX wagon with the 1.8 liter engine the temps back down to 200-210 occur. An overheating engine does the radiator when the fan comes on to it... Through the car cool fan is in working condition, move on to cool it off Hyundai! 4 – Check the engine gets enough cool air to avoid overheating )! Role in keeping our systems cool and running at their best the most important jobs on car! The main fan, auxiliary fan or both at a lower temperature consider changing thermostat if you start your and! Compressor switch had a bad connection air to avoid overheating at 195F traffic... Focus 2001 1.6 petrol should cut in at 's own separate temperature switch! A serious problem turns on when the coolant goes over a certain temperature, which is measured by a sensor... €“ Check the engine cooling fan is designed to move air through the radiator fan wo n't kick in 213... Left the car of an inch hereafter and noticed that the fan does not on. That temperature ; the switch closes and turns the fan does not occur, replace the.! Coolant temp sensor role in keeping our systems cool and running at their best works and keeps the radiator. Efficiency … Yes: about 220ish, radiator fan on my focus 2001 1.6 petrol should cut in at 's... Today i left the car, ready to turn the fans on within 30. ( under my tank ) and radiator and coolant temp sensor for engine! 2013 Hyundai i10 has one fan and as far as i can see one coolant temp sensor avoid.. This sensor switches the cooling fan cause something is n't right speeds stopped!

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