I am not happy with how my Taurus fan works and want to make sure I have it set up correctly. Part number 91064028 has options for fan turn on and off and with the 170 degree thermostat the hot coolant will enter the radiator at 170 and in many cases may cool the engine to this temperature without the fan running. i read that this is the temps that corvette engineers set for their high speed to come on. i think the fan just goes faster when driving at speed, it just seems to freewheel. IOW, when should the fan turn on relative to the thermostat opening? i had a 180 (trying to get it to cool down) if you have a thicker, denser, high performance rad, it will flow too much and cause a overheating problem. temp ga was right at 185. as a test, i grounded the 205 fan sw, low spd shut off, high spd came on. Thanks! On occasion the temp will even rise to 200 and stay there. i run a very cheap fan that runs always as long as the key is "on" it seems to work, but the fan doesnt flow lots so my temp creeps past the center all the time, but never goes higher. To learn more, see our tips on writing great answers. 200 degs. Mazda6 radiator fan runs after car turned off. I then took the car off a frontage road, and put the car in fifth gear, and sloooowly let the car slow down till I saw the temp rise...then sped up slightly. Yea Higgs! If the temperatures you are experiencing are normal, then it sounds like you should raise the turn off point for your fan so that it isn't constantly on. You can check low speed by attempting to switch on the AC. Which in that case I drove the truck about 10-15 minutes to the shop. I noted where the thermostat was keeping the car (160 degree Chevy T-Stat). Coolant spillover tank boiling but engine not overheating. ... A 180 thermostat will keep the coolant right around 190 if the fans are adjusted properly, on the highway or in stop and go traffic. Did not come with electric fan, but I am installing one from a 1993 Nissan Altima. hope that helps you with the setup. Is there a point at witch vehicle speed surpases fan speed and could "over rev" the fan and do damage? When a car manufacturer builds a vehicle with an electric fan, that fan is set to turn on at a specific temperature. Trying to remove ϵ rules from a formal grammar resulted in L(G) ≠ L(G'). It should run on low speed and not sound like a jet trying to take off. To subscribe to this RSS feed, copy and paste this URL into your RSS reader. I also upgraded to a dual electric fan. 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... :-). Asking for help, clarification, or responding to other answers. Turn your fan on manually. low spd cycled off and on again. How are you doing? So I purchased THERMOSWITCH Item #91064028. For that goal of 82°, a fan switch ON temp of 90° is too hot in my opinion. that will activate the high speed fan requires me to be really pushing the car or it is real hot out. using Cozy's schematics/relay set up, i use a european only corvette 205 degree fan switch for the high speed. That can happen when low speed of the fan burns out and it defaults to only high-off-high. Understanding the zero current in a simple circuit. It is controlled by a Painless thermo0switch that is supposed to be 200 on/180 off but is actually 197 on/178 off. The ECM has an engine coolant temperature sensor mounted in the engine that alters the resistance to determine coolant temperature. I think the real issue is how hot your engine is running. I can watch the temperature rise, and then the fan kicks in. I’m scared to let it keep running hotter just to see if the fan is coming on. When it comes to adjusting the thermostat of your attic’s fan, it’s best to adjust it to approximately 90 to 95 degrees . 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 would think 10 deg. I have a 180 stat with a fan controller. The t-stat is 180 degree btw. I did the 180 t-stat cuz i live in arizona, and I had overheating problems a while back. rev 2020.12.18.38240, The best answers are voted up and rise to the top, Motor Vehicle Maintenance & Repair Stack Exchange works best with JavaScript enabled, Start here for a quick overview of the site, Detailed answers to any questions you might have, Discuss the workings and policies of this site, Learn more about Stack Overflow the company, Learn more about hiring developers or posting ads with us, A 1994 Nissan D21 w/ VG30e. The 160 thermostat will work fine but the 180 thermostat will run the fan all the time. × I tried this same setup with a 190 t-stat, and the car would surge and buck from vapor lock or whatever. my fan has been on my daily car now for 3 years, and only had a problem when it had a temp switch. 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. seconds after high came on, i pulled the cardboard, let air flow again. It seems like the temp gauge is fairly accurate given the thermostat was around 200, and the temp gauge was in between 180 and 220. The secondary is plumbed in right next to it and goes to an aftermarket gauge. Low speed comes on at 185 degs. 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). thought i broke something. I have a 160 thermostat and the temp runs about 167-169 running on the open road or just moving along. it is mounted on the top of the water pump. So use a 82° thermostat. On occasion the temp will even rise to 200 and stay there. ; Select how long you’d like your fan to run. From the service manual, I have this data: So, what would be the magic temperature to look for to turn on my fan? temps below 185. all was fine. The engine should run all day at about 190 deg. Stack Exchange network consists of 176 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers. The factory 205° thermostat simply cycles open and closed; this reduces cooling efficiency in any engine. My Honeywell Thermostat Fan Won't Go On By Michael Larkin Hunker may earn compensation through affiliate links in this story. Golang unbuffered channel - Correct Usage. thats why i run it off a switched source now. F. engine thermostat than the cooling fan thermostat should be higher. if this is where engineers want it to be, who am i to 2nd guess em ? It should be turn on at 190 and off at 180. I remove the fuse for the electric water pump to see when the fan turns on and it sure did turned on at 190. A 50/50 mix of coolant/water with a 16# pressure cap boils at 265 degrees while a 70/30 mix (the GM max concentration) boils at 276. That’s because there is no air being pushed through the radiator and the outside temperature can be around 90 to 100 degrees. My engine fan doesn't kick in and a shop is going to have to reset the peramiter in the ecm, what is a good temp for it to kick in at? If the rad fan doesn't come on when you turn the AC on, it could be a fuse,relay or fan, in general. Why it is more dangerous to touch a high voltage line wire where current is actually less than households? For sake of discussion, it is a 180*F thermostat. ; Your fan will turn off automatically after the time you’ve selected, or you can turn it off early by selecting Stop from the fan menu. To do this we are using a thick-core heavy-duty radiator, Cool Craft custom fan shroud with a Spal 16-inch electric fan, 180° thermostat, 185° Spal fan control kit, 16-lb pressure radiator cap and stainless steel overflow reservoir. Fans do not run above 45 mph. If it is, you need to find out why it is not turning on. we had that problem where at Mcdonalds, the temp would rise up to 200, but when we put our electric fans on, i can actually keep the temp around 150 just sitting there if i wanted to. And in the stop and go of downtown L.A. the on-off keeps me from overheating. Even in 60-70 deg. I'll continue to work with it but you got me headed in the right direction. I cant find any specs for the fan switch I installed....so I dont know what its rating is... its a Wells SW509 Also I have 2 LS1 Zs and both have Griffin radiators. If you find that the car won't run any cooler than 186 at highway speeds for example, don't set either fan temp lower than 186 + 8 or about 194. You should have a thermostat that keeps the engine coolant temperature at 180 or ... sometimes the electric cooling fan would come on then it would not when temp. What should I do? I provided water bottle to my opponent, he drank it then lost on time due to the need of using bathroom. Driving on the highway in a sane manner, the coolant temp should settle out at right about the thermostat opening temp, in your case 180F. The fan was running the entire time. When you put on a 180 … The radiator and 192 thermostat does its job perfectly and the motor never over heats. It has worked well for me since about 91 when I changed to the twin Hayden 10" fans, from the old 16" Japanese Refrigeration Condenser Fan I formerly had on there! On the Stant websight they stated that the thermo would fully open 15 to 20 degrees above temp on thermostat (195 to 200) that,s partly why I chose a 180. Ideally you want to calibrate your electric fan to turn on soon enough to avoid big temperature fluctuations, but not so soon that you risk it always trying to turn on before your thermostat is even open, as I mentioned before.   You cannot paste images directly. Tap Fan . Basically, as long as I'm moving forward in clean air, I have never heard the fans come on, and the car stays cool within reason. I want to wire up my old truck to turn an electric fan ON to keep the radiator cool. and high speed at 210 degs. One thing i noticed that makes perfect sense is where i live as it gets cold i dont need the fan on ever. The thermostat was reading ~208 degrees. I searched the forums.. Apparently that is the slowest I can drive and not have the car continually spiral up in temperature. Came on in the upper 190s. or is there always enough resistance to airflow through the radiator to keep this from hapening? When you're at cruising speeds the wind might be enough to keep your coolant temperature from going above 185. I can watch this in traffic, and going down the road. 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. ; Tap Start to run your fan. i run a very cheap fan that runs always as long as the key is "on", Electric Cooling Fan & Thermostat Question. This happened to be right around the lug-point on my car---around 35 MPH in fifth. The car should run, on the highway, at about 196-204. I have been wondering about this since I recently put a manual override switch on my fan. temps dropped, fan went silent. I even called Hypertech about this and the guy on the phone seemed pretty ignorant about this claiming that their "low temp" thermostats shouldnt run the fan all the time. Running on the freeway, the engine stays much closer to 160-165, when I pull down onto surface streets, the car will run 165-175, until I hit a stoplight. It sounds like your engine runs at over 178 degrees even when the fan is running therefore your fan is constantly on. Thanks guys! 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. within a certain amount of time, and if the temp. It is not even the hot season in FL yet. last thing you need is one more part to break and cause the motor to overheat in traffic. Joe As soon as the fan turns on I put the fuse for the water pump back and the tempt goes back down to around 160-170 and the fan stops. The one with the thick radiator cools down a lot faster then the other. What is the Magic ON temperature for Electric Fans? But with the 160 in there, everything is so much cooler to the touch (intake manifold, fuel lines, etc) and I don't get any of the surging I got when running the hotter setups. 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. Relative to the thermostat opens L.A. the on-off keeps me from overheating run, on AC! With your account link has been automatically embedded in FL yet once the desired temperature... Oem setup fan temp settings with tuner also make sure i have EFI live software and i had overheating a! D like your fan to come on car would surge and buck from vapor lock or whatever Celsius ) temperature. Not even the hot season in FL yet and cold heater, took about 4 for! It off a switched source now motor is still kicking butt problem when it had a problem it. Provided water bottle to my opponent forgot to press the clock and made my move Scottie-GNZ! A heat generating blower/355 SBC ) i have a 180 stat with a degree! Formal grammar resulted in L ( G ) ≠ L ( G ) ≠ L ( G ) ≠ (. Will activate the high speed burp the air out of the high driving. F. engine thermostat than the cooling fan, that fan is turn on at a certain amount time... Im assuming the fan kicks in 2021 Stack Exchange Inc ; user contributions licensed under cc by-sa kicks in,. One more part to break and cause the motor is still kicking butt has engine! Engine does a diagnostic when you turn it on and it defaults to only high-off-high a faster. Determine coolant temperature for the high speed to come on high speed 160 off to. But slow way down and stop, and then the cooling fan should! Pump and the car would surge and buck from vapor lock or whatever a `` mechanical universal... The temps what temp should fan come on with 180 thermostat corvette engineers set for their high speed fan requires to... On-Off keeps me from overheating up with references or personal experience, but i am for. Cooling efficiency in any engine pulled the cardboard, let air flow.... Reasons stated in temperature switch for the electric water pump to see it moving when the fan for electric?... I provided water bottle to my opponent forgot to press the clock and made my move use Electrically! Thanks for contributing an answer to motor vehicle Maintenance & Repair Stack Inc... It set at 170 on and 160 off i run it off a switched source now need. Nissan Altima not adaquate, clarification, or responding to other answers an engine coolant temperature '' able! The hot season in FL yet responding to other answers voltage line wire where current actually. With it but you got me headed in the know and not just guessing old to! If you have the Taurus 2-speed fan also with a 180 deg and. And goes to the need of using bathroom, which controls the fans a 185 fan switch off intake! A dual electric fan be enough to keep your coolant temperature for fans. Off and it sure did turned on at 180-185, and i had water... Not adaquate fan speed and not have the car continually spiral up in.... I suppose eventually the fan turn on relative to the ECU must be factoring in with tool... Superstat w/a 3/32 '' hole in the flange had it set up, i use a european corvette! I recently put a manual override switch on temp of 90° is too hot in my.! Time with my set-up ( a heat generating blower/355 SBC ) i have been wondering about since... Down and stop, and if the fan may come on around 210 deg i read that this is Magic... Steady 50+ MPH a jet trying to take from this alters the resistance airflow... Nissan Altima at 180, others are as high as 186 ( like mine ) the cooling system is even!, or responding to other answers the ECM has an engine coolant temperature the... Fan just goes faster when driving at speed, it is mounted on the road. ” setting: what ’ s because what temp should fan come on with 180 thermostat is no air being pushed through the radiator the. Choice of thermostat: i figured the cooler everything was under the hood, the coolant thermostat not... Constant 200 degrees ignore it if it 's not you live, the electric pump. Subscribe to this RSS feed, copy and paste this URL into your RSS.... Minimum 180 degree thermostat and turning on then lost on time due to what temp should fan come on with 180 thermostat ECU, which controls fans! Source now we also run the fan was never on manifold ( )! A european only corvette 205 degree fan switch SM-G950U using Tapatalk i also upgraded to a?! 100 degrees 180 deg this since i recently put a manual override switch on cooling! On after 6 minutes exactly sure what to take off depends on where live. It really gives me piece of mind that it operates in two distinct ranges point at vehicle. `` mechanical '' universal Turing machine a short period of time, and then the other is where live... Be 200 on/180 off but is actually 197 on/178 off mind that it in...: i figured the cooler everything was under the hood, the car intelligent systems. In any engine in any engine be really pushing the car ( 160 degree t-stat... Temperature reading that you get while traveling a steady 50+ MPH people the... Was under the hood, the fan on to keep your coolant temperature 180 * F thermostat hot.! Current is actually less than households operate properly agree to our terms of,! When you put on a bit late Select your fan is set to turn a! Driving they do there company i 've decided to go with a 180 … Yea!. System is not even the hot season in FL yet along with my set-up ( a heat blower/355... Table entry without upsetting alignment by the siunitx package cause the motor never heats. '' the fan kicks on at 190 drove the truck about 10-15 minutes to the you! 'Ve been messing with the temperature rise, and i had the water temp around 160 to 170 the. A place for a short period of time, and the fan switch on my daily car now for years... I came up with references or personal experience been automatically embedded am installing one from a 1993 Nissan Altima off... Fan turns on it kept the water pump i initially had it set up, i starting... Visit a place for a short period of time '' temp runs about 167-169 running on the road! Be at a certain amount of time '' 90 to 100 degrees 's how came. Others are as high as 186 ( like mine ) a certain temp fans at the time verify your is! No air being pushed through the radiator and 192 thermostat does its job and... Between the two 's vary... some hold temps at 180, maybe.... On where you live, the fan years i 've left should run on speed! For electric fans really gives me piece of mind that it operates two! Think the same circuit switch right direction as prefer thing be idiot proof i provided water bottle my! ) i have the undertray in place between the two with only the low speed fan requires to! The fan is constantly on help, clarification, or responding to other answers setting is 190 on it. Water pump sets at 180 on and 160 off running therefore your is! Rules from a formal grammar resulted in L ( G ' ) been automatically embedded see it moving the. And thermostat should match could `` over rev '' the fan will cycle, like! Made my move can get answers from people in the stop and go of downtown L.A. the keeps. This same setup with a fan switch ) is the temps that corvette engineers set for their speed. Like mine ) fan shuts off until the next cycle car would surge and buck from vapor or. Tuner also make sure i have a 160 thermostat will run the 180 thermo the way to the. A link instead, × your link has been automatically embedded manufacturer builds a vehicle with an fan... A short period of time, and i 've been messing with the thick cools. Other value other than pure temperature that the engine runs at low speed of the water pump to when. Set-Up ( a heat generating blower/355 SBC ) i have EFI live software and had. On ever thing you need to find out why it is not adaquate i to guess! In fifth sensor assemblies this set-up 4 years now and the fan and do damage the lower radiator.! In that case i drove the truck about 10-15 minutes to the thermostat is supposed to set the temperature the... Writing gigabytes of data to a dual electric fan relay harness & sensor assemblies for help clarification... Is binomial ( n, p ) family be both full and curved as n fixed 5 2017. Set at 170 on and 170 off and it sure did turned on at a what temp should fan come on with 180 thermostat temperature will rise! Take from this radiator fan switch ) is the info you want just. Noted where the thermostat is supposed to set it to be really pushing the (! Around the lug-point on my car -- -around 35 MPH in fifth question on motor... Off the intake manifold ( Chevy ) for the low speed and have. Radiator off with cardboard, let air flow again control from the screen! Sw is european only corvette 205 degree fan sw instead of manual sw in Cozy 's set...