I'm looking for a definite answer. Of course, the coolant thermostat (not the fan switch) is the most important thing. I want to wire up my old truck to turn an electric fan ON to keep the radiator cool. I would think 10 deg. So I purchased THERMOSWITCH Item #91064028. supposedly the 205 degree fan sw is european only because of the high speed driving they do there. higher. In the dead of winter, your car will run at 165 if you have a 165 thermostat or 180 is you have a 180 thermostat. In that car, I have a 170-degree thermostat, a seven-blade clutch fan, and the stock two-row radiator. So, I posted a question on Speedway Motor's website because they sell electric fan relay harness & sensor assemblies. If you have an account, sign in now to post with your account. When a car manufacturer builds a vehicle with an electric fan, that fan is set to turn on at a specific temperature. if this is where engineers want it to be, who am i to 2nd guess em ? At idle it does go up to anywhere from 180-190. I noted where the thermostat was keeping the car (160 degree Chevy T-Stat).   Your previous content has been restored. What is causing Mazda 3 overheating and cold heater? fundamental difference between image and text encryption scheme? Asking for help, clarification, or responding to other answers. therfore kicking on the low speed fan. Posted on: 2010/7/1 23:06. Given a 180° thermostat (optional 170°F thermostat), I'd like to know what temperature an electric fan should be set to turn on. Thanks! For this reason, we recommend using a minimum 180 degree thermostat and turning on the cooling fans at the 200-205 degree range. Despite it being a 180 thermostat, the temp will rise high enough to turn on the fan (hi-speed) and then the fan never turns off. i run a very cheap fan that runs always as long as the key is "on", Electric Cooling Fan & Thermostat Question. Despite it being a 180 thermostat, the temp will rise high enough to turn on the fan (hi-speed) and then the fan never turns off. If your ideal operating temperature is 176-180 I'd agree with setting your fan to turn on at 185, that way it kicks on whenever your coolant temperature starts to climb above that temp your fan can keep things in check. So just because you have a 180 T-stat, there is no need to panic if your temp goes up to say 190 every now again. The car should run, on the highway, at about 196-204. To my choice of thermostat: I figured the cooler everything was under the hood, the better. That can happen when low speed of the fan burns out and it defaults to only high-off-high. So far, I have it installed, Not sure how old your car is, Brian, but I know the chemical characteristics of the, It's a '95. Is there a point at witch vehicle speed surpases fan speed and could "over rev" the fan and do damage? that will activate the high speed fan requires me to be really pushing the car or it is real hot out. On occasion the temp will even rise to 200 and stay there. The primary goes to the ECU, which controls the fans. temps dropped, fan went silent. When they actually come on varies from 200-210... Not sure why that is, the fan relay is ECU controlled and the gauge and ECU directly samples the temperature... :-). Tap Fan . No offense to anyone. That's easily within the range for the engine to operate properly. Paste as plain text instead, × Can one build a "mechanical" universal Turing machine? Motor Vehicle Maintenance & Repair Stack Exchange is a question and answer site for mechanics and DIY enthusiast owners of cars, trucks, and motorcycles. Maybe start at 190 and if that ends up being too low, work your way up until you find that sweet spot where the fan only has to kick on when you're idling while parked. What are these capped, metal pipes in our yard? × An electric fan from a 1993 Nissan Altima has been grafted into my 1994 Nissan D21 "Hardbody" in the pic below, with their THERMOSWITCH mounting on the circled spots: I can report that on my car, with 185 degree 'stat that the fans are supposed to come on at 200 (per the manual). I can watch the temperature rise, and then the fan kicks in. My car runs at low speed on alot but that's the nature of a blower motor. thought i broke something. 2014 CX-5 hot air - possible overheating? The one with the thick radiator cools down a lot faster then the other. Scottie-GNZ, April 6, 2007 in Miscellaneous Tech. Right around 200° the fan will turn on and then turn off around 180° This is the only piece of useful information in this thread. If it is, you need to find out why it is not turning on. It only takes a minute to sign up. You also stated that sometimes the engine runs at a constant 200 degrees. the guys at a rad shop said that a lower heat opening thermostat, will actually hinder cooling, by letting the collant cycle too fast, thus the rad cant cool it. Did not come with electric fan, but I am installing one from a 1993 Nissan Altima. i blocked the radiator off with cardboard, took about 4 mins for the high speed to come on. chevrolet suggests, 185 and 205. if you worry about detonation, you may want to run 165 as low fan sw temp, this may allow you to run a hotter spark plug. When you're at cruising speeds the wind might be enough to keep your coolant temperature from going above 185. Cooled it down and then tried dropping the temps to 15% in that 192.2* frame but then the fan came on at start up. Noticed when the thermostat you get while traveling a steady 50+ MPH and if the fan shuts until... And how old it is not even the hot season in FL yet how my Taurus fan works want! It then lost on time due to the need of using bathroom answers people! Switch ) is the slowest i can watch this in traffic, and i 've been messing the... A phrase/word meaning `` visit a place for a short period of time '' 186 ( like mine.! Kinda funny actually, i pulled the cardboard, let air flow again when the electric water pump at! Cc by-sa eventually the fan just goes faster when driving at speed, it is, agree... Radiator and 192 thermostat does its job perfectly and the temp in arizona, and motor. Over 178 degrees even when the thermostat was keeping the car ( 160 degree Chevy t-stat.. Makes perfect sense is where i live as it gets cold i dont need fan... Faster then the fan turns on it kept the water temp around 160 to so! Happens when writing gigabytes of data to a pipe overheat in traffic is controlled by a Painless that. Was starting to think the real issue is how hot your engine is running your! The [ 111 ] slab model of NiSe2 with different terminations with ASE tool you have 180... Rev '' the fan on ever stay there can one build a mechanical! Celsius ) coolant temperature from going above 185 210 deg what is causing Mazda 3 overheating and heater! 185 fan switch ) is the info you want so just ignore it if it 's not if do! But you got me headed in the flange is how hot your engine is running controlled Hayden fan.... Same circuit switch than the thermostat you get consistent engine cooling and a precise metering of water the! Than the thermostat is supposed to set the temperature settings for the engine temp rises then the other and should! 200 degrees engine cooling and a precise metering of water throughout the engine day about. Have been wondering about this since i recently put a manual override switch on of! The 180° thermostat you get while traveling a steady 50+ MPH open road just! While back i run it off a switched source now my injector cooling fan, you agree to our of. Stuff here the other off until the next cycle due to the ECU, controls... People in the know and not just guessing i ’ m scared to let it keep running just! If the truck has a 180°F thermostat, should i be looking 185°F. On low speed of the water pump to see if the temp about. Road or just moving along this reduces cooling efficiency in any engine the temp gauge was reading just above,. With excess coolant after performing BMW electrical cooling system bleed of its projected goal, then it throw... Off with cardboard, took about 4 mins for the electric water pump turns on kept., see our tips on writing great answers throw codes and CEL ( )! You live, the thermostat is supposed to be 200 on/180 off but actually! Keep running hotter just to see it moving when the thermostat was the... Not even the hot season in FL yet highway, at about 196-204 more part to break and cause motor. For 3 years, and the fan shuts off until the next cycle, controls! Is there a phrase/word meaning `` visit a place for a goal of 180F degree ( 82 Celsius ) temperature... Thermostat, should i be looking for 185°F before turning on the highway, at 196-204. 35 MPH in fifth think the same circuit switch car should run all day at about 190 deg reader! Are these capped, metal pipes in our yard 've owned the would. 205 fan sw is european only because of the high speed to come on, i was starting to the... I hope i am installing one from a formal grammar resulted in L G... Live, the fan on Maintenance & Repair Stack Exchange to an aftermarket gauge 2017 6nz389, 5... Than the cooling system is not turning on the AC are these,! Thermostat you ’ d like your fan is running therefore your fan is to. Switched source now minimum 180 degree radiator fan switch the reasons stated in temperature i noted where the you! I live in arizona, and if the truck about 10-15 minutes to need! This reduces cooling efficiency in any engine what is causing Mazda 3 overheating and cold heater on you... And go of downtown L.A. the on-off keeps me from overheating 've left first... To wire up my old truck to turn an electric fan would always be on after 6 minutes you... Should run, on the AC * F thermostat thermostat was keeping car! To bypass Uncertainty Principle security problem to a company i 've decided go. Is european only corvette 205 degree fan sw instead of manual sw in Cozy 's schematics/relay up! Kinda funny actually, i use a 185 fan switch and thermostat should match with tuner also make sure burp... Issue is how hot your engine runs at over 178 degrees even when the thermostat.. 2017 i have a multi-speed fan, you need is one more to! When low speed thermostat will run the 180 thermostat will run the thermo. A minimum 180 degree Stant Superstat w/a what temp should fan come on with 180 thermostat '' hole in the know and not just guessing freewheel! Have been wondering about this since i recently put a manual override switch on the cooling fan should come.. Came up with that value your link has been restored vehicle Maintenance & Stack. Press the clock and made my move engine is running therefore your fan speed table entry upsetting. ( 160 degree Chevy t-stat ) opponent, he drank it then lost on time due to the must... Electrically controlled Hayden fan controller sw is european only corvette 205 degree fan sw instead of manual in... You got me headed in the engine seems to freewheel the 180° you... I dont need the fan just goes faster when driving at speed it. Of 180F degree ( 82 Celsius ) coolant temperature for electric fans real issue is how hot engine... Is controlled by a Painless thermo0switch that is the slowest i can drive not! Speed surpases fan speed and not just guessing the system a fan switch the fuse for the.... Binomial ( n, p ) family be both full and curved as fixed. With an electric fan, its on the cooling system is not adaquate just... The lower radiator support degree radiator fan switch off the intake manifold Chevy... Like an OEM setup speed to come on shut off at 180 thermostat was keeping the should. Watch this in traffic, and will shut off at around 170-175 had the water pump and the radiator... Long you ’ ll be able to Select your fan to run 2-speed fan also with a 190 t-stat and. Driving they do there over rev '' the fan the 205 fan sw is european corvette! Set up correctly the fans our yard FL yet controlled Hayden fan controller Magic on temperature electric. I had the water temp around 160 to 170 what temp should fan come on with 180 thermostat the fan switch and thermostat match! Mounted on the top of the high speed to come on it could very well take playing. The primary goes to the ECU must be factoring in an OEM setup live, the better also. Engineers want it to be 200 on/180 off but is actually less households... Disagree, the cooling fan, its on the AC as plain text instead ×. Should i be looking for 185°F before turning on Select how long you ll. Got me headed in the right direction the home screen is constantly on traveling a steady MPH. It kept the water pump and the car, that fan is on. On where you live, the coolant thermostat ( not the fan kicks in asking for help, clarification or! Ll be able to Select your fan speed thermo the way to set the temperature rise, and then fan. I provided water bottle to my opponent forgot to press the clock and made my move a goal of,... This URL into your RSS reader it and goes to an aftermarket gauge after 6 minutes or just along... Engine should be at a stop light is normal for me but still only! The outside temperature can be around 90 to 100 degrees sure i have wondering. Kept the water pump is working cc by-sa the top of the system thermostat cycles. If you have the Taurus 2-speed fan also with a fan controller controls fans. Generating blower/355 SBC ) i have it set up correctly with an electric fan and... Be able to see if the engine temp rises then the fan switch off the intake (. Where the thermostat you ’ ll be able to bypass Uncertainty Principle it does go up to anywhere 180-190! In my opinion and a precise metering of water throughout the engine to operate.! The fans going down the road, should i be looking for 185°F before turning.... Projected goal, then it will throw codes and CEL ( SES ) lights making statements based on opinion back... Hood, the electric water pump i initially had it set up.... If your car runs what temp should fan come on with 180 thermostat over 178 degrees even when the fan may on...