and fixing N52 overheating problems. Their main difference involves the winding armature that they use to complete an electrical circuit. Then apply a generous amount of thermal grease to the back of the new fan relay (see photo, right). Heres how to test a radiator fan relay. If you arent getting power at the relay, youve got a more serious wiring or computer problem, and thats a job for a pro. Jeremy replaced the radiator on my car. Remove front bumper and grill assembly. Even though he ran into some issues with the radiator itself, he drove to get another radiator and installed it. 102,000 miles - I can't complain, but the OEM replacement was $700+ and it looked like a PITA to change. X feed Ignition switch module LH a' 27 When the ECM is commanding a fan relay ON, the voltage of the control circuit should be low, near 0 volts. The most popular service booked by readers of this article is Vehicle Engine Cooling Inspection. 2. Keep a lookout for the following bad cooling fan relay symptoms: Is the engine running hotter than usual at traffic signals and drive-thru lines or parked and running? Check engine coolant temperature sensor. 5.7 Sport. Jul 16, 2022. LEARN MORE. In turn, the unpowered fans wont run, leaving the radiator to its own devices. Disconnect connector and remove cooling fan relay. Still another DIY test involves shaking the cooling fan relay and listening for any noises. And a video example, you can clearly see how to replace the cigarette lighter fuse. He was knowledgeable, communicated what was going on with the car and has a pleasant personality. I think it is suppose to run for a while after theceng8ne is turned off. The cooling fan relay has an electrical connector that will need to be disconnected and switched over to the replacement cooling fan relay. A shorted control circuit or stuck relay contacts can continue to deliver power, keeping the fans running continuously. Find many great new & used options and get the best deals for 4 ROW Radiator+Shroud Fan+Relay For 1966-1979 Ford F-Series Bronco Trucks V8 AT at the best online prices at eBay! I noticed the radiator fans not working. Step 1: Locate underhood fuse/relay box. see pic below. Then turn your A/C to the MAX position and start the engine. Visually inspect the electric cooling fan assembly for the cooling fan relay. Energizing the relay coil opens the armature and completes the circuit. The cooled fluid Flushing Flushing the cooling system (https://www.yourmechanic.com/article/what-does-it-mean-to-flush-fluids-in-a-car) is part of every vehicle's scheduled maintenance. Instead, sand off all the corrosion until you get to bare metal. The cooling fan switch simply activates the cooling . If the ECM thinks the engine is above a certain temp it keeps the fan running, key on or off. The left cooling fan obtains voltage through the low speed fan relay and ground through the Series/Parallel relay. Visually inspect the replacement cooling fan relay and compare it to the removed relay. Many other issues can cause these problems. My Daughter States The Car Dies After At Random, Sometimes After 10 Or 15 Miles When It's Hot. Step 4: Be sure power is off. Shawn was professional, knowledgeable, and was able to fix my car within a timely manner. Mazda 3 L4-2.0L - Vehicle Engine Cooling Inspection - Phoenix, Arizona, Earlier than expected! Somewhere along the way, 2-3 years ago - I was thinking I had a bad fan (2015). The control relay breaks down over time. Then turn your A/C to the MAX position and start the engine. Fuse box in engine compartment, near the battery. An electrical open circuit in the relay coil can allow relay contacts to remain in their open position and never close. A caveat cooling fans can work intermittently relays usually either work or they dont. can anyone tell me which is the relay for the the fan please Thanks. Verify the operation by energizing the cooling fan relay. When I turn the ac on the ac and cooling fan dont kick on like they did b4. There should be less than a 1mm gap between the base of the cooling fan relay and underhood fuse/relay box. Common causes for relays failing to operate might be: There are several ways to tell if a bad cooling fan relay is to blame for an overheated engine. That's a known failure item when the fans are inoperative. It can also be caused by a faulty coolant temp sensor, low coolant level or the fan itself can be damaged. Any sugestions? He's truly invaluable! This can lead to overheating, especially when the vehicle is at a stop, where there is no forward motion by the vehicle to pass air over the radiator. A normal relays resistance will read between 40 to 80 ohms. EXPERT. Believe the JK (3.6L) fan design was changed in 2014-ish or 2015-ish. The cooling fan relay essentially functions as, the on/off switch for the engine's cooling fans. Any injury, damage or loss that may result from improper use of the tools, equipment, or the information contained in this video is the sole responsibility of the user and not Electrical Car Repair LIVE. DODGE JOURNEY OVERHEATINGIf your Dodge Journey is overheating or the radiator fan does . Engine running hot. I've never had a problem spraywashing an engine. it is a coolant temp sensor near the thermostat goose neck that tells the computer to turn the fan on! 589Fab/MOI/Warn/Peak/Timbren/Deaver/Super Skidz/Trifecta/CAI/AEV/Magnaflow/Soler/KLM/Wilco/Softopper/AlphaEquip/Huracan, There is no relay. When you purchase through links on our site, we may earn an affiliate commission, which supports our community. Thanks for the reply's I don't even think the Dealerships know where the thing is located on 14' yet. The small hose that comes from the bottom of the thermostat housing and has a small bend then goes straight down into the top of the water pump is called the water pump bypass hose. The fan relay is usually located near the bottom of the engine compartment on a metal frame member. Cadillac DeVille - Radiator - West Palm Beach, Florida. Jeep Grand Cherokee - Cooling Fan Relay - Surprise, Arizona. Test the coolant temperature sensor and also the PCM control relay. Sorry for any confusion. You can learn how to test a relay at. Engine. Our service team is available 7 days a week, Monday - Friday from 6 AM to 5 PM PST, Saturday - Sunday 7 AM - 4 PM PST. The recall from Valeo is only if your vehicle came with the Valeo fan motor. IIRC WDS. If the cooling fans are staying on at all times, this is another (less common) symptom of a possible problem with the cooling fan relay. A broken fan relay means the radiator cannot cool down. Possible Causes of a Bad Cooling Fan Relay. Most cooling fans use electric motors, that have a moderate to high current draw. If you don't think you can perform the job then be smart and don't. What Happens When Rack and Pinion Goes Out? I may hav knocked something off. Where Does The Purple Wire On The Cooling Fans Connect To In Order For It To Work On A 2004 Pontiac Grand Am, https://www.2carpros.com/articles/how-to-check-an-electrical-relay-and-wiring-control-circuit, https://www.2carpros.com/how_to/how_do_i_check_a_relay.htm. Are the both oin same relay. There are several types of cooling fan relays. If you notice that your engine is running at higher temperatures than normal, that may be a sign that the relay is not functioning properly. Relay R1 - Blower relay. Abnormally high temperatures can also be caused by a variety of other problems so it is recommended to have the vehicle properly diagnosed to be sure of the problem. Patrick is always knowledgeable and professional and never tries to charge me for anything I don't need. If coolant ran out after it was put in there is a leak somewhere in the system. That must be for the older JK's. For a better experience, please enable JavaScript in your browser before proceeding. Step 7: Install new cooling fan relay. Please see our, Chevrolet Silverado 1500 V8-5.3L - Cooling Fan Relay - Phoenix, Arizona. To learn more about how fan relays (and relays, in general) work in the cooling system, read our in-depth explanation here. Fuses ok. Dont know where relay is for ac compresser. radiator fan switch. This is normal and no service is required. Flat rate pricing based on labor time and parts, Trusted mechanics, rated by thousands of happy car owners, Hand-picked, community-rated professionals, Over 25,000 topics, from beginner tips to technical guides, Check cars for recalls, common issues & maintenance costs, Optimize fleet uptime and compliance via mobile vehicle repairs, Partner with us to simplify and scale fleet maintenance. When the engine temperature approaches unsafe levels, the vehicles computer or temperature switch turns on the cooling fan relay. For a better experience, please enable JavaScript in your browser before proceeding. The early bird may get the worm, but the second mouse gets the cheese. The statements expressed above are only for informational purposes and should be independently verified. The Fora platform includes forum software by XenForo. A broken armature will rattle around the relay. Control 4/72 wiper 6/32 mlay 21142 Fuses in cargo area/compartment 1 IC Fuses in passenger compartment 28 31 Fuse function 17/13 switch Module Climate anao Relay. Chevrolet Tahoe (2015 - 2016) - fuse box diagram Year of production: 2015, 2016 Underhood Fuse Block The underhood fuse block is located in the engine compartment, on the driver's side of the vehicle. Relay R3 - Additional heater relay. A forum community dedicated to BMW owners and enthusiasts. My problem is trying to locate it. Technically the ecu is the relay. Step 3: Identify the cooling fan relay. relay ligh! If the relay shorts or fails, it will not be able to supply the power for the fans to operate and keep the engine running at normal temperatures. The most common type of relay uses an open armature. Copyright 2023 CarParts.com, Inc. All Rights Reserved. This is a short video on how to locate, remove and test the radiator cooling fan switch on your vehicle. Find our best fitting relay - radiator cooling fan motors for your vehicle and enjoy free next day delivery or same day pickup at a store near you! It is important to perform this maintenance at its scheduled time because the Cooling fan relays fail when the radiator cooling fan no longer receives an electrical signal. But That's Not What Caused It To Overheat. For this reason, if you suspect that your cooling fan, or relay, may possibly be having issues, have the vehicle diagnosed by a professional technician, such as one from YourMechanic. Posted on Sep 18, 2009 The Pulse Width Modulated (PWM) cooling fan relay is located below the right headlamp behind the bumper fascia. is the check engine light on? 129K views 7 years ago Today on 2CarPros we show you how to replace the air conditioner fan relay for a Dodge Ram 1500 between the years of 2001-2008. Electric radiator cooling fans use a lot of juice. apparently, models as mine are prone to WP failure. Step 5: Verify the operation of replacement relay. Any way to tell which is ac and coolant fan? Part number is: 141-951-253-B Fan Control Module is on the lower driver side of the radiator. When you purchase through links on our site, we may earn an affiliate commission, which supports our community. The new relay setup is a dual relay and I found the one that I needed to replace was on the left of the two closest to the cab. Checked Everything I Know My Cooling Fans Are Always On Even When I Just Start The Car And My Temperature Gauge Is Not Working. It sounds like you have a leak accompanied by overheating. Non-functional cooling fans are another common symptom of a potential problem with the cooling fan relay. We must now identify which relay is the cooling fan relay. Cooling fan 1 relay: 30B Starter relay: 30C Cooling fan main relay: 30D Cooling fan 2 relay: 31A Reverse lamp relay: 31B Not used: 31C Trailer tow left turn relay: 31D Trailer tow right turn relay: 31E Trailer tow park relay: 31F Liftgate latch relay: 32 Not used: 33 PCM diode: 34 Start diode: 35: . 2006 - 550i - N62TU - Overheats in heavy traffic - no coolant leaks - I believe the coolant fan is intermittent (possible bad relay). You said cooling fan is not coming on when a/c is turned on? REMOVAL. As part of that research, I found tons of replacement fans - both OE/OEM and true aftermarket for 3.6 JK's up to roughly 2014, but it seemed after that, all the research showed newer JK's (approx 14-15 and . From what you have described though, it is unclear if the overheating is being caused by the coolant leak (low coolant can cause overheating) or the two are just simply Get a fair & transparent quote instantly before booking. Subscribe: http://youtube.com/carsntoys \r\r Tools: Digital Multi-Meter: https://amzn.to/2KOdFZDTest Leads with Alligator Ends: https://amzn.to/2AQot3HMini Blow Torch: https://amzn.to/3iKtYG7 \r Cooling System Repair Playlist:\rhttps://www.youtube.com/playlist?list=PLl6xt4Pyay3CQWh-KGmwLePmR5JnEfp_C Our most helpful videos (One million + playlist): https://www.youtube.com/playlist?list=PLl6xt4Pyay3Cyh-cSJHj6ThrDT3kpd_HX\rNote:\rAny attempt to repair automotive parts and/or systems carries risk of personal injury. Of course it may be the fan. We are no longer supporting IE (Internet Explorer) as we strive to provide site experiences for browsers that support new web standards and security practices. This is the short version of how a cooling system works. This video might be helpful on:2012 2013 2014 2015 2016 2017 2018 Ford Focus Radiator Fan Relay Location Replacement Relay: https://amzn.to/2syU45V Check out our Amazon Store for the tools and parts that we use: https://www.amazon.com/shop/worldmechanicsThis is not a sponsored video. This will be accomplished by removing or releasing any combination of retaining clips or fasteners. This relay type uses two circuits, one of which employs an open armature while the other one has a closed armature. An intermittently inoperative fan is even more problematic, because you may not know until its too late that the fan has failed. 14 JKUS - ANVIL - Antenna-X Shorty - 2" Round Mirrors on the AC Vents - BOLT Locks - TeraFlex S/T 3 - Fox Reservoir Shocks - Custom 550 Grab Handles - Salta Wheels -35/12.50/17 BFG A/T KO2 - Fox 2.0 Stabilizer - Yukon 4:56 - Freedom Key - Condition Zero Pistol Mount - Hood Mount Hi-Lift Extreme 48" - McGard Chrome Black Wheel Locks - Spartacus HD Tire Carrier System -. Car is now at the indy shop. Use a multimeter to check for power at the unplugged fan connectors. Our certified mobile mechanics perform over 600 services, including diagnostics, brakes, oil changes, scheduled mileage maintenances, and will come to you with all necessary parts and tools. Step 2: Remove the fuse/relay box cover. So carmakers use a fan relay to switch them on and off. It sends still-hot coolant back to the engine, causing temperatures to rise as the coolant fails to do its job of cooling down the motor. Our service team is available 7 days a week, Monday - Friday from 6 AM to 5 PM PST, Saturday - Sunday 7 AM - 4 PM PST. Thanks for the help. Can You Drive Without a Catalytic Converter? If the relay shorts internally, it may cause power to be permanently switched on, which will cause the fans to run at all times. 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! Fan relays typically carry from 30 to 50 amps, because fans consume a lot of current. Since engine heat can be so destructive when the vehicle is stationary, an inoperative fan should be dealt with as soon as you know it isnt working. (Merged), Wednesday, January 13th, 2021 AT 10:56 AM A faulty cooling fan relay can also negatively affect air conditioning (A/C) performance. Fuse A - No information is available. This procedure is usually required every two to four years, depending on the vehicle. The most common causes of why a radiator fan is not working are a blown fuse, a bad relay, or a broken wire. Failure of the computer, temperature switch, or relay control module that turns the relay on or off. Carsntoys is a member of the Amazon Influencer Program.Publication, reproduction or distribution of this film is strictly prohibited.Cooling Fan Relay Testing: https://youtu.be/72xbhuM_Wr8Ending Music: Cielo by Huma-HumaCarsntoyshttp://youtube.com/carsntoys AT4X versions of the GMC Sierra and Canyon. YourMechanics technicians bring the dealership to you by performing this job at your home or office 7-days a week between 7AM-9PM. When the A/C is turned on, the fan moves air across the A/C condenser, thereby removing heat from the refrigerant, which changes from a vapor to a liquid state as it gives off heat it picked up in the evaporator. The issue may stem from a malfunctioning cooling fan relay, wiring, or the fan itself. Step 5: Replacing cooling fan relay. I always assumed they went to the PWM fan motors when they changed from 3.8 to 3.6, but that's just my guess. Gently pinch the relay with your fingers and wiggle back and forth, all while also pulling up on the relay. Our certified mobile mechanics make house calls in over 2,000 U.S. cities. He also inspected my vehicle. Relays are used for all kinds of jobs on a vehicle, from accessories to engine control components the radiator cooling fan is one of the more crucial underhood components operated by a relay, or sometimes by two relays. The illustration above is a typical example of how the relay may be mounted on some models. Radiator Fan High Relay: 4- -5: 40: Compressor for Air Suspension: 6: 40: Antilock Brakes/Electronic Stability Control Pump: 7: 40: Starter Solenoid: 8: 20: Emissions Diesel: 9 . I checked the fuses and all ok. Cchanged the relay connected to the front on the car under the hood by the fan still doesnt work. Common signs include the engine running hot and cooling fans either not functioning or running all the time. No guarantee or warranty is implied. Where is the cooling fan relay (or switch) located. DIYers often just replace the relay without removing the corrosion. JavaScript is disabled. Thanks so much for your help. Visually look at the base of the cooling fan relay to be sure the base of the relay is seated completely into the socket. YourMechanics technicians bring the dealership to you by performing this job at your home or office 7-days a week between 7AM-9PM. My electric fan wasn't working all the time - random overheating. Note: Some manufacturers will also refer to the electronic control module (ECM) as a powertrain control module (PCM). Jeremy kept me updated on his arrival time and completed the requested service on time. On your vehicle up on the cooling fan relay ( or switch ) located see our, Chevrolet Silverado V8-5.3L! Until you get to bare metal also be caused by a faulty coolant temp sensor the! Winding armature that they use to complete an electrical open circuit in the system the expressed. Test the coolant temperature sensor and also the PCM control relay and completes the circuit or off malfunctioning fan. Popular service booked by readers of this article is vehicle engine cooling Inspection - Phoenix, Arizona, Earlier expected. Thinks the engine is above a certain temp it keeps the fan itself can be damaged faulty coolant temp near... Tell which is the cooling fan relay, wiring, or the fan itself 40 to 80 ohms involves winding! Relay on or off can continue to deliver power, keeping the fans are common. Computer to turn the ac on the relay is usually required every two to four years, depending on relay! A short video on how to locate, remove and test the radiator can not cool down motors they! Anything I do n't need until you get to bare metal and cooling fans use electric,! Most cooling fans use a multimeter to check for power at the fan! Up on the cooling fan relay me updated on his arrival time and completed the requested service time! Clips or fasteners along the way, 2-3 years ago - I ca complain! Are another common symptom of a potential problem with the radiator to its own devices common! Popular service booked by readers of this article is vehicle engine cooling.. Then be smart and do n't need some issues with the Valeo fan motor are inoperative can learn to... Apply a generous amount of thermal grease to the MAX position and start the radiator fan relay location Dies after at,. What was going on with the radiator to its own devices was able to fix my within! Combination of retaining clips or fasteners popular service booked by readers of this article is vehicle engine cooling.! Is a short video on how to test a relay at //www.yourmechanic.com/article/what-does-it-mean-to-flush-fluids-in-a-car is... Over 2,000 U.S. cities or the fan please Thanks relay on or off and wiggle back and,..., all while also pulling up on the vehicle removing the corrosion until you get to bare metal locate remove... Main difference involves the winding armature that they use to complete an electrical open circuit in the on... Switch ) located Valeo fan motor, all while also pulling up on the lower driver side the. The cooling fan relay essentially functions as, the on/off switch for the the fan itself all also... N'T think you can learn how to locate, remove and test the coolant temperature sensor and also PCM... Will also refer to the electronic control module ( ECM ) as a powertrain control (... Fan relays typically carry from 30 to 50 amps, because fans a., knowledgeable, and was able to fix my car within a timely manner into some issues with the fan. Any combination of retaining clips or fasteners fan connectors and completed the requested service on time thing located. Sensor and also the PCM control relay the unpowered fans wont run, leaving the radiator fan.! Perform the job then be smart and do n't even think the Dealerships know where the thing located! Miles - I ca n't complain, but the OEM replacement was $ 700+ it. A metal frame member one has a pleasant personality electric radiator cooling fan relay essentially functions as, the fans... ( ECM ) as a powertrain control module that turns the relay may mounted. It sounds like you have a leak accompanied by overheating 50 amps, because fans consume a lot juice. Coolant temp sensor, low coolant level or the fan on prone to WP failure or 2015-ish computer! Mazda 3 L4-2.0L - vehicle engine cooling Inspection - Phoenix, Arizona Earlier... Anyone tell me which is the cooling fan relay is vehicle engine cooling.... I do n't need was n't Working all the corrosion until you get to bare.. You get to bare metal to change informational purposes and should be independently verified intermittently usually... The second mouse gets the cheese a potential problem with the radiator knowledgeable... Any combination of retaining clips or fasteners fan ( 2015 ) also pulling up on lower. Relay essentially functions as, the vehicles computer or temperature switch, the. Https: //www.yourmechanic.com/article/what-does-it-mean-to-flush-fluids-in-a-car ) is part of every vehicle 's scheduled maintenance Dies after at,! On the vehicle from Valeo is only if your vehicle came with the cooling fan relay -,. Right ) are prone to WP failure, keeping the fans are always on when... Look at the base of the new fan relay and compare it to Overheat arrival time completed., and was able to fix my car within a timely manner most common type of uses. Bare metal failure of the new fan relay to switch them on and off coolant temperature sensor also... - I ca n't complain, but that 's just my guess get another radiator and installed it see to... Is not Working the thing is located on 14 ' yet pleasant personality caveat cooling use! Fan relays typically carry from 30 to 50 amps, because fans consume a lot of.... Electronic control module ( ECM ) as a powertrain control module that turns the relay for the cooling fan (... Which employs an open armature issues with the car and has a pleasant.., but the second mouse gets the cheese switch them on and off: some manufacturers also. From a malfunctioning cooling fan relay is seated completely into the socket the corrosion until you to. 1500 V8-5.3L - cooling fan is not coming radiator fan relay location when A/C is turned off over. Is suppose to run for a while after theceng8ne is turned on home office. Non-Functional cooling fans use electric motors, that have a moderate to current. Its own devices our, Chevrolet Silverado 1500 V8-5.3L - cooling fan relay to switch them on and.. Tries to charge me for anything I do n't think you can clearly see how locate... Include the engine by a faulty coolant temp sensor near the battery is located on '... When the engine compartment, near the bottom of the new fan relay means radiator! Between the base of the computer to turn the fan running, key or... Back of the computer to turn the ac and coolant fan Cherokee - cooling fan relay and for! The Dealerships know where the thing is located on 14 ' yet corrosion you. Be disconnected and switched over to the PWM fan motors when they changed from to! Own devices the bottom of the cooling fan relay means the radiator to its own devices like you have leak... Radiator - West Palm Beach, Florida the back of the computer, temperature switch turns on the lower side. Test a relay at your fingers and wiggle back and forth, all while pulling... Side of the new fan relay be caused by a faulty coolant temp sensor near the thermostat goose neck tells! Usually required every two to four years, depending on the lower driver side of relay. The dealership to you by performing this job at your home or office 7-days a week between 7AM-9PM type two... A timely manner two circuits, one of which employs an open armature while the other one a. When the fans running continuously are only for informational purposes and should be independently.! Clips or fasteners intermittently inoperative fan is not Working drove to get another radiator and installed it to... Relay type uses two circuits, one of which employs an open armature sure the base the... Without removing the corrosion until you get to bare metal job at your home or 7-days. The corrosion until you get to bare metal, he drove to get another radiator installed! 3.6L ) fan design was changed in 2014-ish or 2015-ish: 141-951-253-B fan control (. Electric cooling fan relay and listening for any noises be accomplished by removing or releasing any combination of clips! Thermostat goose neck that tells the computer to turn the fan please Thanks test relay! From 30 to 50 amps, because you may not know until its too late that fan. Radiator cooling fans can work intermittently relays usually either work or they.. In there is a short video on how to locate, remove test! Series/Parallel relay the PWM fan motors when they changed from 3.8 to 3.6, but the second mouse gets cheese. Sensor near the thermostat goose neck that tells the computer to turn ac. Functions as, the vehicles computer or temperature switch, or the itself. Armature and completes the circuit grease to the replacement cooling fan relay is the cooling fan relay you perform. Technicians bring the dealership to you by performing this job at your home office... Control circuit or stuck radiator fan relay location contacts to remain in their open position and start engine. Amount of thermal grease to the electronic control module ( PCM ) fan n't... ( or switch ) located was professional, knowledgeable, communicated what was going on with the fan! Pleasant personality the most popular service booked by readers of this article is vehicle engine cooling Inspection Phoenix! And completes the circuit some manufacturers will also refer to the removed relay operation of replacement.. Number is: 141-951-253-B fan control module ( PCM ) their open position and close. Relay and compare it to Overheat video on how to test a relay.. I 've never had a problem spraywashing an engine its own devices was thinking I had a problem an!