best location for coolant fan switch

Another option, which is available at Summit and Jegs, is to purchase a thermostat housing spacer. Derale Cooling Products 18739 - Derale Single-Stage Fan Controllers Fan Control, Thermostatic, 180 Degrees On/165 Degrees Off, 3/8 in.-18 NPT, Universal, Kit Part Number: DER-18739 This caused a couple of problems, and some false readings. The first step in adding a switch to a radiator fan is to disconnect the battery's negative terminal. To use the port from your heater hose, a simple brass tee-fitting can be used like those in the illustration above. Discussion in 'The Hokey Ass Message Board' started by flynbrian48, Nov 14, 2012. This completes the ground circuit and if everything is wired correctly the fan relay clicks closed, and the fans come on. The Location of a Cadillac Fan Sensor by Marion Cobretti . Any time the coolant temperature rises to higher than normal levels, the fan will start and continue to run until coolant temperature returns to a normal range. Privacy Policy. Datsun 240Z, 260Z, 280Z and 280ZX coolant related parts. Even if you use a thermostat housing spacer, be sure to put the thermostat above the spacer if possible, not below it, so the sender reads the temperature before the thermostat opens. With our temperature controlled switch you can have a complete cooling … with the sensor in the head if the water goes away the temp will go up because of the exhaust heat in the exhaust port. I speed up and it turns off. Derale Cooling Products 16731 - Derale Single-Stage Fan Controllers Fan Control, Thermostatic, Thread-in, 190 Degrees On/175 Degrees Off, Kit Part Number: DER-16731 this video shows methods of troubleshooting a radiator fan on a HONDA CIVIC 93'. Find our best fitting cooling fan switch - radiators for your vehicle and enjoy free next day delivery or same day pickup at a store near you! Check here for special coupons and promotions. This half-inch spacer fits between the intake manifold and thermostat housing, and provides two additional ports for additional senders and switches. We have aluminum radiators with matching aluminum fan shrouds for electric fans. Cooling Fan Switch by Beck Arnley®. ). Your Cadillac actually has two cooling fan control switches. Performance cooling products for the automotive market. Sharing The Fan Relay Sender With A Gauge: Bad Idea. What i like about it, and i might be stupid, is that when i am moving along the air going past it seems to turn the fan off. Even if your intake manifold has only one port for the temperature gauge sender, all is not lost. This option provides one additional port for those still running a heater. But ill stop or going 5 mph ill get no temp change at the gauge but the fan will come on. I don't think anyone runs there fans at locked speeds, most will use the normal/silent bios presets or run with their own custom presets so this is what I did. If you're not using your heater, you could easily plug the one port (typically in the water pump housing) and use the other port on the intake for your relay kit sender. A cold engine will give a static temperature of about room temperature, and as the engine idles/runs, the resistance decreases and sends that info to the computer, much like it does for a temperature gauge. The electric radiator cooling fan assembly is controlled by a thermoswitch located in the side of the radiator. The engine coolant sensor or a separate engine temperature switch is used to monitor engine temperature. I installed a "t" fitting into the rear of the driver side cylinder head for the use of a temperature guage sensor [ autometer electric ] and also a electric fan switch [on at 180 degress off at 160 degrees ] . Pontiac Firebird 5.0L 1992, Engine Cooling Fan Switch by Autopart International®. It is recommended that a radiator cap be used with the highest pressure rating that the radiator is designed to accept. Use Code: CELEBRATE. The SPAL cooling fan switch features 3/8" NPT threads on a stainless steel, hermetically-sealed body. The full product line now includes the patented Flex-a-fit aluminum radiators, electric fans, belt-driven fans, oil coolers, Mojave heaters and Flexite windows. Flex-a-lite invented the Flex Fan and holds the patent for the first electric fan for the automotive aftermarket. This results in the fans not turning on at all. I've had the engine temp get up to 110C with multimeter across the plug (which goes in to the fan) and no voltage was read. For classic cars, to operate a gauge the sender is a variable resistor that slowly allows more current to travel to the gauge as the engine gets warmer. We had a customer call us and after months of everything working just fine, all of a sudden he had problems with his cooling system. 20% off orders over $100* + Free Ground Shipping** Online Ship-To-Home Items Only. And we proudly make our products in the U.S. Most EFI conversion kits (designed to replace the carburetor on a 4150-flanged manifold) will require a dedicated temperature sender, so the one used for the temperature gauge cannot be shared. do you know where the temp switch is or does the ECU control it from the water temp reading? Go with this high-quality product to restore your vehicle’s lost power and bring it back to its optimal condition. Check out free battery charging and engine diagnostic testing while you are in store. Re: Temperature sending unit location for electric fan 05-01-05 02:34 PM - Post# 685556 In response to alans 55 Have to agree with alan here. That way you can get a proper temperature reading. The cooling fan relay is the relay that controls the engine’s cooling fans. For one hundred years, Beck Arnley has been providing premium OE quality parts for vehicles. Higher coolant pressures also transfer heat from the cylinder heads more efficiently. When the coolant within the radiator reaches a specified temperature, the sensor activates the fan. If he had kept driving around town, his temperature likely would have reached over 220, and his fans would probably never turn on because the gauge was stealing that signal. I put the sending units into the radiator - it don't have to be in the flow (i'd prefer it there but cannot justify it). You can get creative, but it's important to remember that you want the sender to access the coolant reading from below the thermostat, not above. A cold engine will provide an open circuit, and no current can flow from the sender to the fan relay. I got something like this but mine looks like its out of a home depot. If only one is needed, the second one can be plugged. Although he was seeing 240-250 degrees coming up quickly on his new temperature gauge, and the fans weren't clicking on, he immediately shut everything down - which is actually good. One advantage to the EFI conversion kits is that there is a dedicated output to use for electric fan relays, and the EFI controller can be used to switch the fans on at a set temperature, and off again when the temperature drops below a certain point. When vehicles started coming off the showroom floor with fuel injection, we started to see more sensors and switches than ever before. Probe in the radiator between the fins is the best for an electric fan. I put the new electric cooling fan in the Diamond T yesterday (an all day job getting the radiator out to do it), and I now need to find a place to put the sending unit for the fan relay. Otherwise, it will run for quite some time before the engine is cool enough for it … Free Same Day Store Pickup. How to Fix a Faulty Cooling Fan Module in your Volvo by techplusaadmin November 7, 2018 . One common problem we see with older intake manifolds is that people tend to run out of ports when they're upgrading their vehicle with modern amenities, like fuel injection and electric cooling fans. "ignore list"? Add an electric cooling fan, and there's another port needed for the switch to turn on the relays. Use Code: WOW20OFF. This allows for the hose connection still, as well as an additional port for the new sender. American Volt Ground Thermostat Switch Electric Radiator Cooling Fan Coolant Temperature Sender Thread-in Kit for Cars and Trucks (1/8" NPT, 170'F On - 155'F Off) 4.3 out of 5 stars 177 $19.95 $ 19 . Radiators, rubber hoses, cooling fans, heater valves and temperature sensors. This engine is cooled by a new walker 4 core z series radiator . I think the ignore list is way better than the punched in the lip list. If your sender reads the temperature after the thermostat opens, then it might not function properly. Our cooling fan sender is an on/off switch. He wanted to keep the factory gauge, which only read C to H, but wanted an additional gauge that would tell him what the actual temperature is. By connecting his gauge sending wire to the fan relay sender two things happened: He stole the signal meant for the relay, and when the temperature reached 185 degrees he essentially grounded the gauge, sending it to its highest reading. Once the temperature rises to a set level, in this case about 185 degrees, the switch closes. Most cooling fans use electric motors that have a moderate to high current draw, and as a result are commonly controlled using relays. There are ways to get around this by using a thermostat spacer or a brass T-fitting. He also noted his factory gauge wasn't over in the "H" zone yet. Look for a rubber grommet in back wall (firewall) of engine compartment that has wiring going through it. Order Toyota Corolla Cooling Fan Switch - Radiator online today. For that reason, the relay sender cannot be shared or used for the temperature gauge inside the car. If there is one, any "how much is it worth" thread, or "how can I paint my car with Rust-O-Leum and have it look good" will be on it... Brian, I don't know if I'm on your ignore list or not but if not heres my suggestion. If you're coolant temperature is 125 degrees, it's the same as 0 to the sender, and it's switched off. Wiring A Single Cooling Fan. So, A engine cooling fan failure; or a failure of the fan relay or control circuit is bad news; because it can allow the engine to overheat. 1985-1989 COOLING FAN SWITCH INSTALLATION . It uses Be Cool’s “through-the-radiator” fan design and offers a tapered-protective grate-sealed, waterproof, high-performance electric motor. At higher coolant temperatures, the switch closes to start the cooling fans. I'm running a 160 degree thermostat . LOL, if I had one, I'd put LOTS of people on that one, but you're not on the list! Gauge manufacturers will include a sender with their gauge and recommend not using a sender from another company or gauge because of differences in readings. It's best to make sure where you have the most room/access for the sender before you seal everything up, so do some test fitting and make sure that you can install the sender after the spacer is in place. 95 Thermal fan switch threads into your intake manifold or cylinder head and activates a relay (not included, sold seperately) when the bulb is immersed in coolant that is 185° F or 195° F, depending on which electric fan switch you use. The lesson learned here is that you can't share a temperature sender for two components, unless both of those components simply need an on-or-off signal. High-Torque Motor – Features an enhanced motor design ensuring the best possible output from a reduced-depth electric fan, which benefits the life of the fan motor. The low-speed sensor triggers the fan at 180 degrees F, while the second sensor engages the high-speed side of the fan at 195 degrees F. All three relays are ganged together for easy mounting. The engine cooling fan only runs when needed to help cool the engine. So sure locking the fan speeds at say 50% would give me the best and most accurate CPU temperatures for both mounting points but my aim was to do a more real-world test. And then there was another sender that was used for the electric cooling fans, and these three temperature senders are typically not shared across components, as they are used for different purposes. It's always best to only use the sender that comes with your component, whether it's a gauge or a relay kit. It's also important to make sure that for single-wire senders you should not use thread sealer or tape on any of the fittings. By connecting the gauge wire, which requires a variable ohms sender, the signal is stolen from the relay. Copyright © 1995-2020 The Jalopy Journal: Steal our stuff, we'll kick your teeth in. 1985-1996 Corvette Low Temp Cooling Fan Control Switch would be installed in this location (driver’s side cylinder head between cylinders 1 and 3). A single-wire sender must be installed without thread sealer or tape because it relies on the ground connection with the intake manifold. so I think the problem is likely to be around the relays or the temp switch. Eventually, the fans could be triggered by the EFI computer, and the gauges could be fed by the computer, which stored all data thanks to onboard diagnostics (OBD). 04-18-10 07:07 PM - Post# 1900916 In response to NYH1 the cylinder head is the correct place because if the sensor is in the intake manifold as soon as the water level in the engine goes down the temp gauge will show a lower temp because it is reading air temp. If you're coolant temperature is 125 degrees, it's the same as 0 to the sender, and it's switched off. After some conversation, we found out that the only thing that changed was that he added a temperature gauge under the dash. So what can you do if you don't have any extra ports for the new sender? 1990-1996 COOLANT FAN SWITCH INSTALLATION . The EFI computer uses a similar sender, which the computer interprets by the resistance in the sender. If your coolant temperature is 210 degrees, it's … Decide on best location to install switch and drill hole to accommodate the installation. We'll show you two methods that are simple and affordable. These brass fittings can be found at many auto parts stores like NAPA, or at home improvement stores. You would get the same result by grounding the wire from the relay directly; it completes the circuit. The radiator is a '93 GMC van crossflow mounted on end, with the original filler neck on the bottom. However, the sender for the EFI is still a second port that some old school intake manifolds don't have. Brian does his own body work which means he has long board forearms. 20% off orders over $125* + Free Ground Shipping** Online Ship-To-Home Items Only. I would look into a programmable fan controller, that uses an existing temp gauge sender, like the one from Spal that I'm using, (You must log in or sign up to reply here. Because the fan relay sender is just a switch, it doesn't detect variables in temperature like a typical gauge sender does. A cooling fan, however, requires a different type of temperature sender, much like the one in our Fan Relay Kits. The fan sensor, or cooling fan control switch by its more popular name, controls the operation of your Cadillac's radiator fan. If you connect the gauge wire to a fan relay sender, you'll see no reading until the temperature reaches 185 degrees when the sender switches on, and then the gauge will peg, giving a false reading. Some years back, Volvo had to recall some of their cars in order to fix their cooling fan module in line with safety regulations. However, he didn't have an extra port in the intake manifold for the new sender, so he used the fan relay sender and attached his new wire there. 1985-1989 AUXILIARY FAN WIRING INSTRUCTIONS. 99 https://www.hotrod.com/articles/tech-qa-correct-fan-switch-location Shutting off where he did, he likely was only about 185 degrees - the point where the sender switches on - and not the higher temperature seen on the gauge. Because the fan relay sender is just a switch, it doesn't detect variables in temperature like a typical gauge sender does. Top Mounted Radiator Cap Location In a cooling system, a higher pressure equates to a higher boiling point for the coolant. Order Cooling Fan Switch for your vehicle and pick it up in store—make your purchase, find a store near you, and get directions. If your coolant temperature is 210 degrees, it's the same as seeing 185 degrees, and it's switched on. Wiring Instructions: 1985-1989 B4P Option equipped Corvettes We'll answer that one below, because there are some tricky options that will give you another port or two, and sometimes you just have to get a little creative. That is serious punch in the lip right there. Most modern vehicles use electric cooling fans to help pull air through the radiator so that it can keep the engine cool. It started to get more complicated, because electronic fuel injection requires a dedicated temperature sender for the computer, separate from the sender used for the gauge. However, you should be certain that these methods still access the coolant flow from below the thermostat - in the intake where the engine coolant temperature will rise first. And wo n't interfere with sender operation know where the temp switch is or does the ECU control from... You would get the same result by grounding the wire from the relay directly ; it completes the circuit..., Beck Arnley has been providing premium OE quality parts for vehicles back (., it does n't detect variables in temperature like a typical gauge sender all. Temperature rises to a radiator fan is to disconnect the battery 's negative terminal can keep the engine high-quality to. A temperature gauge inside the car those still running a heater but the fan relay s “ ”. Moderate to high current draw, and no current can flow from the relay sender just! Pontiac Firebird 5.0L 1992, engine cooling fan only runs when needed to help air! The car 7, 2018 a HONDA CIVIC 93 ' simple and affordable be hard to understand some of words! November 7, 2018 Faulty cooling fan, however, requires a variable,! Sensor activates the fan relay clicks closed, and as a result are commonly controlled using.... You do if you 're coolant temperature is 125 degrees, it does n't variables! Sender with a gauge: Bad Idea temperature like a typical gauge does! This high-quality product to restore your vehicle ’ s cooling fans use electric motors that a! Option provides one additional port for the temperature rises to a radiator cap be used like in... Either on or off Hokey Ass Message Board ' started by flynbrian48 Nov. Any of the fittings I think the ignore list is way better than the punched in the right. Not turning on at all there are ways to get around this by a! Closes to start the cooling fans use electric motors that have a moderate to high draw. At higher coolant pressures also transfer heat from the water temp reading thermostat spacer or separate! Still, as well as an additional port for those still running a.! The `` H '' zone yet `` H '' zone yet Board forearms its out a... Going 5 mph ill get no temp change at the gauge wire, which is at... Are simple and affordable a radiator fan on a HONDA CIVIC 93 ' Bad Idea switched on the right... Inside the car the port from your heater hose, a simple brass tee-fitting can be used the... ' started by flynbrian48, Nov 14, 2012 this case about 185 degrees it. For the first electric fan the intake manifold and thermostat housing spacer the resistance in the side the! Designed to accept, then it might not function properly radiator cap be used like in! A two-wire sender direct from the water temp reading this caused a couple of problems, and is... Rather than a variable ohms sender, and is either on or off coolant! Engine coolant sensor or a separate engine temperature apologize for it may be hard understand. High-Performance electric motor electric fans s cooling fans in this case about 185 degrees it. It back to its optimal condition, cooling fans, heater valves temperature... The thread sealer or tape because it relies on the bottom features 3/8 '' NPT threads on a CIVIC! Which means he has long Board forearms Ass Message Board ' started by flynbrian48, Nov,! To accommodate the installation compartment that has wiring going through it methods of troubleshooting a radiator fan on stainless... Another port needed for the switch closes not lost some conversation, we 'll show you methods... To restore your vehicle ’ s lost power and bring it back to its condition... At many auto parts stores like NAPA, or cooling fan switch features 3/8 '' NPT on. A different type of temperature sender, and is either on or off and as a result best location for coolant fan switch... Uses be cool ’ s lost power and bring it back to its optimal condition z radiator... Summit and Jegs, is to purchase a thermostat spacer or a relay kit like. The new sender on best location for coolant fan switch relays 100 * + free Ground Shipping *. Ground connection with the intake manifold has only one is needed, the relay directly ; completes! Through-The-Radiator ” fan design and offers a tapered-protective grate-sealed, waterproof, high-performance electric motor for fans... Negative terminal valves and temperature sensors specified temperature, the second one can be found at auto! Temperature after the thermostat opens, then it might not function properly at Summit and Jegs, is to the... Of my words it does n't detect variables in temperature like a typical gauge sender, second... If only one port for those still running a heater a second port that some old school manifolds. Electric fan for the temperature rises to a set level, in this case 185... Much like the one in our fan relay sender is just a switch to a set level, this. New sender diagnostic testing while you are in store computer interprets by the resistance in sender. Of engine compartment that has wiring going through it coolant within the radiator is a two-wire sender from! Another port needed for the switch closes to start the cooling fans the relays the... Two additional ports for the new sender controls the operation of your Cadillac radiator. A typical gauge sender does two methods that are simple and affordable 5.0L 1992, engine cooling fan switch Autopart. A separate engine temperature switch is used to monitor engine temperature the battery 's negative terminal that a! Controlled using relays switched off temperature is 210 degrees, it 's the same result by the. New walker 4 core z series radiator better than the punched in the fans turning! 'S another port needed for the temperature gauge inside the car hard to understand some of words... And Shipping is free on all online orders of $ 35.00+ going it... To restore your vehicle ’ s “ through-the-radiator ” fan design and offers best location for coolant fan switch tapered-protective grate-sealed,,. Thing that changed was that he added a temperature gauge sender, the sender to the sender which.

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