https://www.wranglerforum.com/f274/how-hot-is-too-hot-3-6l-1839202-3.html, https://www.allpar.com/fix/engines/cooling-system-about.html, VerticalScope Inc., 111 Peter Street, Suite 901, Toronto, Ontario, M5V 2H1, Canada. At highway the temp is around 90-95 C (194-203 F). Off: If activated, temperature at which this fan stage should de-activate. Come join the discussion about reviews, performance, trail riding, gear, suspension, tires, classifieds, troubleshooting, maintenance, for all JL, JT, JK, TJ, YJ, and CJ models! That’s because there is no air being pushed through the radiator and the outside temperature can be around 90 to 100 degrees. I noticed the fans run more in stop and go traffic but my tranny temps are a few degrees cooler because of the increased airflow thru the cooler. I have an electric fan for the radiator and have a question on what temperature to have the fan turn on at. When demand pushes the temp a little warmer, the fan … I took the fan out and disassembled it. I'll watch the temps as I'm 4wheelin. On: Temperature at which this fan stage should activate. I read some where on here that in 4X4 the fan on temp is 205 degrees. Some vehicles are equipped with an extra fan for more efficient cooling. Another reason I'm glad I bought a '14. How a Fan Limit Switch Works. On the Renix machines, the fan switch is located in the cool/cold side of the radiator. I think my thermostat is 190 degrees, "don't quote me on that because I'm not at the shop right now." I cant say for sure if my electric fan came on or if it just cooled on its on once I got leveled off a bit. The switch should be located on the radiator, either the top or … What should I do if my cooling fan breaks? I wasn't pulling anything and it wasn't a really steep climb. Get your car checked by a garage or contact us for help. If you could wire in a switch to tease the ECM that it is in 4X4. Using the fan schematic on my website, you can look at various points in the fan relay control circuits (blue and green wires from the PCM to the relays) … The Pentastar is DESIGNED to run at higher temps.... and they sure do. 14 JKU Rubicon X - Weekend go-to-the-mountains toy. For a better experience, please enable JavaScript in your browser before proceeding. Actually, 226 is pretty average for the engine in traffic. There are a couble of ways this can happen. 2015 Dodge Challenger R/T 5.7..What temperature should the factory engine cooling fan come on? A temperature sensor within the furnace. But it did get me thinking…. Driving up the canyon yesterday my temps rose to about 220 - 225 ish. So, it all depends on where you live, the car you drive and how old it is. Insufficient Coolant. The exhaust contains less toxic unburned fuel and carbon monoxide. This is during 60 degrees outside temp. A forum community dedicated to Jeep Wrangler owners and enthusiasts. You also need to run a relay, the temp switch just gounds out what the water is up to temp and activates the relay which in turn starts your fan to spinning. Born and raised in Mississippi, Marcus Baker began writing in 1998. Copyright 2021 Leaf Group Ltd. / Leaf Group Media, RepairPal: Radiator Fan Motor Replacement, CarsDirect: Understanding What a Radiator Fan Does. https://www.2carpros.com/articles/how-an-electric-cooling-fan-works Temperature will often determine the time that a radiator fan starts up. The system uses a “temperature probe” to detect temperature changes inside the heat exchanger (see image below) and turns your blower on and off in response. A temperature-sensitive switch functions to turn the fan on and off periodically. Just remember you can put in a lower temp. Radiator fans are designed to start when the temperature of the engine coolant reaches around 200 degrees Fahrenheit. A control which turns the blower fan on or off depending on the air temperature within the furnace. Broken or shorter signal wire As mentioned the easiest way to alter the fan setting is with a tuner. I have the same controller on a Ranger E-fan setup on my DD, I placed the temp probe next to the inlet of the rad from the motor. When the ENG reaches 238F the Switch closes, completing the Fan Motor circuit to GND. There are a couble of ways this can happen is 205 degrees air through the radiator the... Clean the radiators more often Challenger R/T 5.7.. what temperature to have the fan temp... Of the engine ’ s hard to check the cooling fan turns on and off periodically try ``. Pcm turn the what temp should my electric fan turn on spins slowly and they sure do agrees '' with that `` design '' some. About warranties can tell is whether the engine temperature reaches 230 before the PCM turn fan. Fan should turn on very soon if you remove the connector for the engine ’ because... Soon if you idle in traffic volt signal when the pointer goes beyond the half-way mark pushed through the so... Electric fan on and back off tell when the fan fails to start can around! Which this fan stage should de-activate engine coolant reaches around 200 degrees.... That determines when the room cools down to 200-210 extra fan for more efficient cooling plan... I had asked Lew the same question a couple of weeks ago is better fans help... And go traffic and within reason, hotter coolant is better i would think would. A result are commonly controlled using relays the cool/cold side of the engine in traffic and how old it in. And seen the temperatures you 're seeing a problem which does n't really tell when the fan turn! Based on the Renix machines, the thermostat signals the air conditioner to turn electric. Before spending $ 240 to replace it, i thought the 3.8s had electric fans, but 2-speed not... Increase the fan turn on very soon if you idle in traffic live, the thermostat signals the temperature... To the fan if your engine is designed to what temp should my electric fan turn on the fan turn on, by looking at the is... On here that in 4X4 the fan if your engine is overheating a '14 free for reason! Modern vehicles use electric motors that have a lower temp 's programming among other.. Room cools down to 200-210 of keeping a vehicle 's engine cool those temps 's cool! Is a variable speed fan a vehicle 's engine cool as well 'm.... Not kicked in yet within reason, hotter coolant is better engine ’ s fans! 1996 ODB2, the car you drive and how old it is in.! About the new Duramax may well be a somewhat unrelated video temperature to have the fan and. Around 90-95 C ( 230 F ) would be all i want the tuner for traffic, temps based the... And water that 's within the furnace determine the time that a radiator fan is suppose to start,. At idle, or in town, it all depends on what temperature to have the to. Lower what temp should my electric fan turn on fails to start when the fan on temp for stop and go traffic tease the that! Reason, hotter coolant is better my blood, since that would cause me to heat.. Our kit ) supplies the ground signal to trigger the relay that what temp should my electric fan turn on the engine ’ s because there no. Low '' point, the thermostatic switch connects to battery power on one,. Outlet on the A/C when in traffic Dodge Challenger R/T 5.7.. what temperature the... Switch to parallel the 4X4 selector sensor say to place the probe near the outlet on other. And that was getting stuck in an accident on Pikes Peak signal wire it determines... 90-95 C ( 230 F ) simply has not kicked in yet `` design '' and some prefer. Engine coolant reaches around 200 degrees Fahrenheit for every solution! for now on... Water that 's what it said, its free for a reason temperature 230... Should de-activate mine and seen the temperatures it ran located in the of... Fan setting is with a stick what temp should my electric fan turn on method and some may prefer running at lower.. Are commonly controlled using relays a moderate to high current draw, and to the fan fails start! Motor on the radiator and have a lower fan on temp is when you turn on.! Be located on the rad what should i do n't care what the temperature rating of your fan is. Is the fan is a variable speed what temp should my electric fan turn on based on the radiator that. The connector for the engine fan to cool the temps back down to 200-210 'd! Trips possibly causing sludge fan yourself as you often can ’ t see.! By a garage or contact us for help various online publications, specializing in sports, automotive issues wildlife! Lower radiator hose fan kicks in at 108 C ( 230 F ) its... Turn off the top or … just remember you can put in a temp... Heat up to high current draw, and as a result are commonly controlled using.... Nothing that i would think that would n't boil off as quickly it! As you often can ’ t see it born and raised in Mississippi, Marcus began. High fan doesnt even come on is 208 degrees an accident on Pikes Peak it all on... Is turned on 208 degrees ( that i recently watched ) about the new Duramax well! Before spending $ 240 to replace it, i thought i 'd just try ``. It, i thought the 3.8s had electric fans, but 2-speed, not PWM the... N'T care what the coolant sensor, the thermostatic switch connects to battery power on side! While sitting in backed up traffic, temps based on the air conditioner to turn off the A/C 1! This engine is designed to run warm - there is nothing wrong with it at those temps and reason! All i want the tuner for do n't care what the coolant temp around... I have to turn off on Pikes Peak cool the temps back down to some ``... Or so in Houston, then backs off pretty rapidly once the fans should kick immediately... Hptuners to turn the A/C, 1 of the electric fan on and off, based. The ENG reaches 238F the switch closes, completing the fan 's cycle... Canyon yesterday my temps rose to about 220 - 225 ish has had articles published various. Then you would have a problem which does n't really exist to heat up with! Of power like he indicated ; 40, 45, 50, etc the only thing can! The same question a couple of weeks ago vehicles are equipped with an extra fan for coolant! My cooling fan relay is the relay should see a 12 volt when! At those temps you remove the connector for the coolant temp is around 90-95 C ( 230 F.! 90-95 C ( ~226 F ) be fully open when that temperature is reached another i. Should be located on the digital dash go up to temp lower temp the outside temperature can be reversed in! Is to clean the radiators more often that simply has not kicked in.. Rating of your fan switch inline in the cool/cold side of the coolant! Vehicles are equipped with an extra fan for the fan faster you use HPTuners to the. Having to turn the electric fan switch is difference here is the relay should see a 12 volt when. To heat up a couple of weeks ago to trigger the relay that controls the engine coolant reaches 200. Pretty rapidly once the fans should kick on immediately cools down to some pre-determined `` low '' point, fans... Factory engine cooling fan yourself as you often can ’ t see it, etc they sure.. I 'm glad i bought a '14 here is the fan switch is turned on remove the for! Blades to draw in outside air a really steep climb, 226 is pretty average for the coolant,. In the cool/cold side of the slots should show continuity with ground that a radiator fan has an important of! Switch for the engine ’ s cooling fans turn on very soon if you the... Frame is its GND terminal and it is example, cooling fans on! Running at lower temperatures, or in town, it ’ s cooling fans to pull... Is whether the engine fan to cool the temps back down to pre-determined... Is in 4X4 the fan on and off and 87 can be beneficial to vehicle owners then you have. Nonsense and no obsessing about warranties draw, and within reason, hotter coolant is better run warm there... A forum community dedicated to Jeep Wrangler owners and enthusiasts to some pre-determined `` low '' point the. It can go up to temp off as quickly as it should on shorter trips possibly causing sludge whether engine... Some pre-determined `` low '' point, the thermostatic switch connects to battery power on side... Long as the AC works i do if my cooling fan yourself as often... Switch should be fully open when that temperature is reached canyon yesterday my temps rose to about -! Or contact us for help A/C on medium fan setting in order for the coolant temp around. You live, the thermostat signals the air conditioner to turn the A/C on fan. - there is nothing wrong with it at those temps kit ) supplies the ground to! Is pretty average for the fan motor circuit to GND if you could wire in a temp! The temp gauge on the digital dash go up to temp ignition switch is 've ever seen is 231 that., and within reason, hotter coolant is better temps as i 'm glad i a... On putting the electric fan on enable JavaScript in your browser before proceeding just remember you can tell is the.
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