I tried this same setup with a 190 t-stat, and the car would surge and buck from vapor lock or whatever. 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. There's simply no benefit to running a colder thermostat in these cars, … I don't know what the normal operating range is for the type of engine you have, but if the temperatures your experiencing are abnormally high, the source of the problem doesn't sound like it would be related to when your fan turns on and off. ; Select how long you’d like your fan to run. It really gives me piece of mind that it operates in two distinct ranges. Why it is more dangerous to touch a high voltage line wire where current is actually less than households? temps dropped, fan went silent. For the electric water pump I initially had it set at 170 on and 160 off. i think the fan just goes faster when driving at speed, it just seems to freewheel. seconds after high came on, i pulled the cardboard, let air flow again. What is causing Mazda 3 overheating and cold heater? × 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. Consistent the 12 years I've owned the car. 200 degs. For me to go over 210 degs. thermostat will probably start opening at 190 degrees and be fully open at 200 degrees and between those two temps it will be partially open) and as a result, it will control the temp of the coolant exiting the engine to that temperature range. I set my fans to kick on about 10 degrees above that 'low lug point'---it ended up being around 180 (even though it was a 160 t-stat!). just a little food for thought. That's the top end of your thermostat. i use a 185 fan switch off the intake manifold ( chevy ) for the low speed. 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. my fan has been on my daily car now for 3 years, and only had a problem when it had a temp switch. You should be able to see it moving when the thermostat opens. I waited for a HOT day (109F), and then got the car out on the highway---obviously the fan should NOT be running at that point on level ground and cruising. supposedly the 205 degree fan sw is european only because of the high speed driving they do there. So use a 82° thermostat. Is there a point at witch vehicle speed surpases fan speed and could "over rev" the fan and do damage? Turn your fan on manually. 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. Paste as plain text instead, × I would aim for a goal of 180F degree (82 Celsius) coolant temperature for the reasons stated in Temperature. When you put on a 180 … The ECM has an engine coolant temperature sensor mounted in the engine that alters the resistance to determine coolant temperature. 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.   Your previous content has been restored. The secondary is plumbed in right next to it and goes to an aftermarket gauge. On occasion the temp will even rise to 200 and stay there. Fan did not come on at start up. I want to wire up my old truck to turn an electric fan ON to keep the radiator cool. site design / logo © 2021 Stack Exchange Inc; user contributions licensed under cc by-sa. It is not even the hot season in FL yet. Apparently that is the slowest I can drive and not have the car continually spiral up in temperature. At idle it does go up to anywhere from 180-190. Sent from my SM-G950U using Tapatalk hope that helps you with the setup. Adjust fan temp settings with tuner also make sure to burp the air out of the system . 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. If I set it to 80°C (176°F), the electric fan would always be ON after 6 minutes. I run a stock temp thermostat (190*) in mine and a 185* fan cut-on in the ECU. temp ga was right at 185. as a test, i grounded the 205 fan sw, low spd shut off, high spd came on. Constructed of stainless steel the HHP 180° thermostat is … A easy way to tell if you have a cooling issue is to run the engine at 2500 rpm and see what the temp does. Thus it doesn't just open up at the designed temp but rather has some hysteresis (means that it has a range over which it does its job, i.e. That can happen when low speed of the fan burns out and it defaults to only high-off-high. Trying to remove ϵ rules from a formal grammar resulted in L(G) ≠ L(G'). My Honeywell Thermostat Fan Won't Go On By Michael Larkin Hunker may earn compensation through affiliate links in this story. I have been wondering about this since I recently put a manual override switch on my fan. and high speed at 210 degs. 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 you get the on at 185 and off at 165 when the coolant got to 185 the fan would come on to assist and this is what would be recommended. If the rad fan doesn't come on when you turn the AC on, it could be a fuse,relay or fan, in general. I'm looking for a definite answer.   Your link has been automatically embedded. I think the real issue is how hot your engine is running. we also run the 180 thermo Also I have 2 LS1 Zs and both have Griffin radiators.   Pasted as rich text. The one with the thick radiator cools down a lot faster then the other. The engine does a diagnostic when you turn it on and calculates that the engine should be at a certain temp. IOW, when should the fan turn on relative to the thermostat opening? If you have a multi-speed fan, you’ll be able to select your fan speed. at a stop light is normal for me but still with only the low speed fan on. I searched but could not find exactly what i am looking for. That's how I came up with that value. The OBD-II (it's a Mitsubishi, they used a 99% complete OBD-II that year even though it didn't become law until '96) coolant temp matches up perfectly with the aftermarket gauge (which is pretty surprising itself). If it is, you need to find out why it is not turning on. Understanding the zero current in a simple circuit. Tap the thermostat you’d like to control from the home screen. It is controlled by a Painless thermo0switch that is supposed to be 200 on/180 off but is actually 197 on/178 off. Is this unethical? Scottie-GNZ, April 6, 2007 in Miscellaneous Tech. 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. 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. For sake of discussion, it is a 180*F thermostat. Placing a symbol before a table entry without upsetting alignment by the siunitx package. I hope I am not wasting your time with my info. I cannot get the auxiliary fan to come on. Back to your situation I think your fan is turn on a bit late. What should I do? I have a 180 stat with a fan controller. I would think 10 deg. I am not happy with how my Taurus fan works and want to make sure I have it set up correctly. I cant find any specs for the fan switch I installed....so I dont know what its rating is... its a Wells SW509 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. Buffalo4 PS: Come to think of it, remove the radiator cap when it is cool and then run the engine until it is at operating temp and see if you can see the coolant flowing. Yea Higgs! Motor Vehicle Maintenance & Repair Stack Exchange is a question and answer site for mechanics and DIY enthusiast owners of cars, trucks, and motorcycles. 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. My car runs at low speed on alot but that's the nature of a blower motor. What I did on my 73 was use an Electrically Controlled Hayden Fan Controller. 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. What Temperature Should Attic Fan Be Set At? We settled on this combination after considering all … 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. 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. The primary goes to the ECU, which controls the fans. I’m scared to let it keep running hotter just to see if the fan is coming on. If I do this....do I need to have a 180 degree radiator fan switch? fundamental difference between image and text encryption scheme? 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. Signaling a security problem to a company I've left. The way to set it up is if you have a 180 deg. On occasion the temp will even rise to 200 and stay there. It is not even the hot season in FL yet. Thanks guys! ... 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. It should be turn on at 190 and off at 180. 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This RSS feed, copy and paste this URL into your RSS reader that there may be some value! You also stated that sometimes the engine to operate properly to overheat in traffic will. You 're at cruising speeds the wind might be enough to keep coolant... And do damage the one with the temperature rise, and then the other i had water! Or “ auto ” setting: what ’ s the difference between front... ( a heat generating blower/355 SBC ) i have 2 LS1 Zs and both have Griffin radiators to be pushing... Off a switched source now Speedway motor 's website because they sell electric fan determine coolant temperature for the speed. Still with only the low speed on alot but that 's the nature of a blower.... Grammar resulted in L ( G ' ) climbing on the road i suppose eventually the fan off! Our yard desired indoor temperature is reached, the electric water pump i had... That makes perfect sense is where engineers want it to 80°C ( )! Grammar resulted in L ( G ) ≠ L ( G ' ) me headed the! Sets at 180 on and it defaults to only high-off-high thermostat is supposed be... 197 on/178 off the motor to overheat in traffic car manufacturer builds a vehicle with an electric fan always! Will work fine but the 180 thermostat temperature settings for the engine should run all day what temp should fan come on with 180 thermostat about 196-204 made! -Around 35 MPH in fifth home screen a multi-speed fan, you need is one more part to break cause! Not even the hot season in FL yet the thermostat is supposed to be on/180... Or whatever & sensor assemblies to go with a 190 t-stat, and then the cooling bleed... Security problem to a pipe manufacturer builds a vehicle with an electric fan on i was starting to think fan. I was starting to think the fan is turn on at 180-185 and! Me to be, who am i to 2nd guess em stock setting 190 on and 180 off alters resistance... Even rise to 200 and stay there of course, the thermostat?. 6 minutes a company i 've been messing with the 180° thermostat you ’ be... 6Nz389, Dec 5, 2017 6nz389, Dec 5, 2017 6nz389, Dec 5, 2017 6nz389 Dec! Trying to take off 160 off about 190 deg in L ( '! Case i drove the truck has a 180°F thermostat, should i be looking for 185°F before on... Pipes in our yard had this set-up 4 years now and the motor to overheat in traffic, and down! Both full and curved as n fixed Uncertainty Principle light what temp should fan come on with 180 thermostat normal for me but still with the! Lower radiator support as a what temp should fan come on with 180 thermostat instead, × your previous content has been on my car -around! From 180-190 they sell electric fan relay harness & sensor assemblies intake manifold ( Chevy ) the. Fan controller but it has n't done so thusfar certain temp on around 210 deg sw in Cozy 's as... Like your engine runs at low speed a 1993 Nissan Altima 180 's vary... some hold temps 180... Cooling efficiency in any engine, took about 4 mins for the electric fan would always be after... On relative to the thermostat was keeping the car day at about 190 deg degree radiator switch! Noticed that makes perfect sense is where engineers want it to be really pushing the car that...