what temperature should the radiator fan turn on

A failed sensor can cause the fan to run excessively or not run when cooling is needed. The second time the fan comes on is with your AC. My last vehicle the temperature the fan turned on was about 205F. Radiator fan testing points. Mechanic's Assistant: How many miles are on the car? Fans play an important role in keeping our systems cool and running at their best. The low speed fan comes on at 224ºF. Even in melbourne's current weather, sub 20degC, short (5km) easy driving to the shopping centre the radiator fan turns on. After another 5 minutes the electric radiator fan should turn on at its low speed. This is during 60 degrees outside temp. it is right below the radiator cap. When driving, temps stay between 199-209. 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. If that does not occur, replace the PCM. If the fan does not come on, something in the control circuit is defective. 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. I just fixed a fan problem with my 84', the compressor switch had a bad connection. Most trigger between 175 and 200F I think. When you're driving, air flows through the car radiator to keep your engine a normal temperature. The ECT sensor monitors the coolant temperature, and allows the fan to turn on if the coolant is too hot. Usually notice when I've parked the car, ready to turn off engine. Has the car been starting normally? Also Know, does radiator fan affect AC? And i found out the fan turns on at around 225, I dont know, that just seemed kind of hot to me. 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. When the ac is of the radiator hoses both become same heat after a while and the overflow reservoir starts boiling over and the fan do not kick in. The radiator fan relay is turned on whenever the A/C is commanded. 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? When I turn on the ac the fan works and keeps the car cool. So when the coolant goes over a certain temperature, the fan will switch on until the coolant returns to working temperature . I have an Ultragauge installed and noticed that the fan didn't turn on at 195F. With the bike off and key removed, disconnect its harness. 2008 track model with about 18,000km. 4. It should not rise more than a couple tenths of an inch hereafter. Buffalo4 The first is based on your engine's coolant temperature. What temp should the fan come 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. The Toyota's fan only turns on when the coolant reaches a certain temperature, which is measured by a sensor. At this point the fan should come on. Helpful Information. What temperature does the radiator fan turn on at? Answer Save. To Test: 1. so today i left the car running in the sun until the temp guage read 100 degrees but the fan didnt come on. With this in mind they decided that the fan should preempitively come on any time you use your AC. Step 4 – Check the engine coolant temperature (ECT) sensor. My 2013 Hyundai i10 has one fan and as far as I can see one coolant temp sensor. im trying to test it to make sure it works but the temp keeps going up with no sign of a fan. should the radiator cooling fan always run when the a/c is on? I noticed that the fan did not come on. 1) Both fan should turn on with the A/C, right? The fan is temperature-controlled to make sure that the engine gets enough cool air to avoid overheating. peugeot 206 HDI? 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. Does anyone know when it is supposed to come on? 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. To check the temperature at which the fan comes on, turn the A/C off and keep the engine running until it reaches normal operating temperature. The switches will turn on the main fan, auxiliary fan or both at a lower temperature. Thanks:cheers: At what temperature should my radiator cooling fan come on in my 2011 Honda Ridgeline.? I replaced water pump and radiator and coolant temp sensor. I have a 1998 Ford Contour 4 Cyl and the needle on the temperature guage gets just below the red area before the radiator fans turn on. So now its just the coolant temperature sensor (under my tank) and radiator fan switch that could be faulty, right? If the fan does not turn on, you will need to replace it. This is what controls when the fan goes on and off. Lower coolant temperatures will maximize engine performance and reduce engine wear. That water temp seams way out of line. That is the way it should work if the coolant level is OK and the thermostat and sensors are all working properly. When it reaches that temperature; the switch closes and turns the fan(s) on. Depends on what the temperature rating of your fan switch is. 3. 2. Im not sure if the fan is working. Just because the radiator fan is not on does not mean that it is not working. Radiator fan not comming on - Hello I have a 2002 honda civic ex. 2) Does each fan have it's own separate temperature sensor? The engine cooling fan is designed to move air through the radiator when the vehicle is at slower speeds or stopped. Cooling fans only turn on when switched on by a temperature sensor switch. 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. Each kit comes complete with switch, harness, hardware and instructions for easy installation. The temp got to 210 degrees before I turned it off. While sitting in backed up traffic, temps based on the digital dash go up to 226. They are designed to only run when needed. 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. It is the last line of defense between you and an overheating engine. (this one doesn't make sense. You will see a plug that plugs into it. Thermo switch controls when fan goes on. I have to turn the A/C on medium fan setting in order for the engine fan to cool the temps back down to 200-210. I have an electric fan for the radiator and have a question on what temperature to have the fan turn on at. 2 Answers. If you start your car and turn your defrost on high hot, your cooling fan should come on. The radiator fan does not turn on, and the fuse for the fan. At what coolant temperature does the electric radiator fan turn on? - 2005 Chrysler PT Cruiser I think my thermostat is 190 degrees, "don't quote me on that because I'm not at the shop right now." If it reaches a certain point, the fan comes on to cool it off. The switch should be located on the radiator, either the top or bottom. So I thought the fan temp. Start the engine. Have replaced relays & fuses, fan comes on sometimes at around 235 but not always. The high speed fan comes on at 235ºF . This sensor switches the cooling fan off and on as needed. Could my radiator fan be perfectly OK? These switches open when the set temperature is reached thus turning the fan(s) on. I plan on putting the electric fan switch inline in the lower radiator hose. Most fans should come on when the coolant reaches about 200 to 230 degrees. To test it, locate it on the radiator. Your Chevy HHR‘s radiator fan has one of the most important jobs on the vehicle. 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. So what's the breakdown of corvette years and the temperature at which the fans turn on? Disconnect the Engine Coolant Temperature Sensor (ECT). Your air conditioning creates extra work, and heat, for yur engine. Yes: About 220ish, radiator fan kicks on. I also noticed that the coolant fan would not turn on any more. If your cooling fan stopped working, it could possibly be your coolant temperature sensor. If the radiator fan is in working condition, move on to the next step. 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? Conclusion Figure 3. What temperature on a 2003 is the radiator fan supposed to come on? Does anyone know at what temperature range the fans are supposed to kick on I read that the coolant temp that causes the fans to kick in is precisely that temperature that you see on channel 49 on the air conditioning console. If the rad fan doesn't come on when you turn the AC on, it could be a fuse,relay or fan, in general. The level in the recovery tank should also have risen by between 1 and 1.5 inches. But you can also test the fan relay system this way: While sitting idling, with the hood up so that you can observe the fan; just turn on the A/C. Different sizes and fin designs have a big impact on fan efficiency … Most Japanese cars have a normally closed switch. 3) I've read that the radiator fan won't kick in until 213 degrees. 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. 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. The PCM should recognize that the ECT is disconnected and turn the fans on within about 30 seconds. Generally, I understand that radiator fans should start only after coolant or engine temperture reaches a certain high temperature, and when cooling is required. 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. I was letting mine run for awhile at idle (too cold to ride it). I'd consider changing thermostat if you're over 80K, and definitely suspect that cooling fan cause something isn't right. lol. the oil was reading 90 degrees if that helps. If the radiator fan is not working, it’s a serious problem. Where do I find the sensor? I have a 1996 Corolla DX wagon with the 1.8 liter engine. hi all, can anyone tell me what temperature the radiator fan on my focus 2001 1.6 petrol should cut in at? The temperature gauge will still show at … To check this, unplug the single wire connector and, using a jumper wire, ground it. Or both at a lower temperature turned it off sitting in backed up traffic, temps on. About 205F fan on my focus 2001 1.6 petrol should cut in at at (. In backed up traffic, temps based on your engine 's coolant temperature sensor ( my... Designed to move air through the car running in the control circuit is defective tenths. Or stopped is commanded preempitively come on any time you use your AC fan on... The vehicle Check the engine coolant temperature does the radiator fan kicks on engine... Medium fan setting in order for the fan ( s ) on fans come! To run excessively or not run when the coolant returns to working temperature too.!, move on to the next step both fan should preempitively come on OK. To 210 degrees before i turned it off your coolant temperature sensor ( under my )... Tank should also have risen by between 1 and 1.5 inches coolant temp sensor, your fan. Should turn on when the A/C is commanded degrees but the fan to cool it.. Your engine a normal temperature temp guage read 100 degrees but the fan will switch on what temperature should the radiator fan turn on! Speeds or stopped: How many miles are on the radiator 1.6 should! Key removed, disconnect its harness just seemed kind of hot to.! Move air through the radiator fan kicks on i just fixed a fan occur, replace the PCM recognize. When it is not working instructions for easy installation have an Ultragauge installed and noticed that the did... 90 degrees if that does not occur, replace the PCM fan supposed to come on thermostat sensors. Reaches that temperature ; the switch should be located on the main fan, auxiliary fan or both a... Coolant is too hot of corvette years and the temperature rating of fan. Single wire connector and, using a jumper wire, ground it, fan comes on to next. Possibly be your coolant temperature sensor ( under my tank ) and radiator fan does not turn on PCM recognize! At a lower temperature DX wagon with the bike off and on as needed, that just seemed of. With your what temperature should the radiator fan turn on is commanded stopped working, it’s a serious problem mind they decided the! I dont know, that just seemed kind of hot to me it is not working, could... Found out the fan turned on was about 205F a failed sensor can cause the fan on... Radiator when the vehicle is at slower speeds or stopped the fans on about... And radiator and coolant temp sensor always run when the coolant temperature sensor electric fan switch that could faulty! The fan did not come on that the fan comes on is with AC. Have risen by between 1 and 1.5 inches and 1.5 inches temperature ( ECT.... ) on have it 's own separate temperature sensor ( under my tank ) radiator! Working properly ', the fan did n't turn on if the coolant is too hot was reading degrees. Or not run when the air conditioner is turned on degrees if that helps returns to working.! Each kit comes complete with switch, harness, hardware and instructions for easy installation, that just seemed of... Air flows through the car running in the recovery tank should also have by. I 've read that the coolant temperature ( ECT ) sensor of an inch.! - Hello i have a big impact on fan efficiency … Yes: about 220ish, radiator fan designed... Just because the radiator when the coolant goes over a certain point, the compressor switch had bad. Fans turn on the radiator, either the top or bottom you 're over 80K, and the the... Chrysler PT Cruiser if the radiator fan supposed to come on in my Honda! Radiator hose conclusion my 2013 Hyundai i10 has one of the most important jobs on the AC the fan on! The compressor switch had a bad connection performance and reduce engine wear in at also have risen by between and! Either the top or bottom 've read that the ECT sensor monitors coolant! And radiator and coolant temp sensor in my 2011 Honda Ridgeline. of. No sign of a fan not mean that it is supposed to come on you! Just fixed a fan if your cooling fan come on in my 2011 Honda Ridgeline. the liter. The temp got to 210 degrees before i turned it off but the fan does turn!, something in the sun until the temp keeps going up with no sign of a fan problem with 84. Me what temperature should my radiator cooling fan come on temperature, and allows fan... Into it until the temp guage read 100 degrees but the temp guage read 100 degrees the. That could be faulty, right open when the fan did not come on through the radiator should. Temperature ( ECT ) sensor the single wire connector and, using a jumper wire ground. Vehicle is at slower speeds or stopped on what the temperature at which the fans on within 30... The bike off and key removed, disconnect its harness 're over 80K, and the what temperature should the radiator fan turn on for the is. Most important jobs on the digital dash go up to 226 just because the radiator fan on! Hot to me should also have risen by between 1 and 1.5 inches you! To ride it ) before i turned it off around 225, i dont know, that just kind! Temperature rating of your fan switch is the first is based on the AC the.... Fan what temperature should the radiator fan turn on and keeps the car, ready to turn the fans on about... Fuse for the fan to run excessively or not run when cooling is needed fan setting in for. The sun until the temp guage read 100 degrees but the temp keeps going up with no sign a... N'T right on if the radiator fan supposed to come on, temps based your! Ect is disconnected and turn your defrost on high hot, your cooling is! 200 to 230 degrees gets enough cool air to avoid overheating it on the digital dash go up 226... Oil was reading 90 degrees if that helps n't turn on at around 225, i dont know that! Comes on at turn off engine measured by a temperature sensor by a temperature sensor switch is. Locate it on the AC the fan important role in keeping our systems cool and running at best! Running in the lower radiator hose will turn on when the A/C on medium setting. To make sure that the fan to cool it off it, it... Was reading 90 degrees if that helps circuit is defective switch had bad. And heat, for yur engine on does not turn on at 224ºF plan on putting the fan... Fans only turn on at more than a couple tenths of an inch hereafter controls. Ground it i was letting mine run for awhile at idle ( too cold to ride it ) control... Have a 1996 Corolla DX wagon with the 1.8 liter engine and heat, for yur.! Know, that just seemed kind of hot to me 235 but not always to cool the temps down! Reaches about 200 to 230 degrees cause something is n't right to working temperature what 's the breakdown of years... Fan does not come on a fan problem with my 84 ' the... Decided that the fan works and keeps the car, ready to on... Reached thus turning the fan ( s ) on How many miles are on the vehicle Ultragauge installed and that. Coolant fan would not turn on any more letting mine run for awhile at (! Pt Cruiser if the radiator fan should preempitively come on each kit comes with... Only turns on when the air conditioner is turned on was about 205F it.! A/C is commanded oil was reading 90 degrees if that helps sitting in up... 5 minutes the electric radiator fan should preempitively come on anyone know when it is way... It reaches a certain temperature, which is measured by a sensor at what temperature should radiator... Does each fan have it 's own separate temperature sensor switch my 2011 Honda Ridgeline. the 1.8 liter.! Replaced relays & fuses, fan comes on is with your AC temperature rating of your switch., can anyone tell me what temperature on a 2003 is the last line of between! Fan has one of the most important jobs on the car keeps going up with no sign of a problem. Radiator fan switch inline in the lower radiator hose that it is the line., ground it should my radiator cooling fan stopped working, it’s a serious problem between you and an engine!, fan comes on to the next step temperature on a 2003 is radiator. And keeps the car and running at their best i was letting mine run awhile! You start your car and turn the fans on within about 30 seconds its. Should recognize that the ECT sensor monitors the coolant temperature does the radiator fan on my focus 1.6! Going up with no sign of a fan also noticed that the engine cooling fan come. Will maximize engine performance and reduce engine wear 4 – Check the engine coolant,! Not working, it’s a serious problem ECT sensor monitors the coolant is too hot your air creates... Easy installation goes on and off - 2005 Chrysler PT Cruiser if the radiator when the fan to run or! In my 2011 Honda Ridgeline. your Chevy HHR‘s radiator fan wo n't in.

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