That’s why your AC is not cool. I wired each fan directly to the battery, both function correctly. If you spin the fan manually, when it is cold, it should have less friction than when hot. The cooling fans and fan relays receive battery positive voltage from the engine wiring harness junction block. Your Sonic’s radiator fan will not kick on. Valeo is recalling certain engine cooling fans, part numbers 696121, 696273, and 696275, used as service replacement parts for model year 2008-2011 BMW 1-Series, 2006-2011 BMW 3-Series, 2000-2009 BMW 5-Series, 2004-2005 BMW 6-Series, and 2006-2007 BMW 7-Series vehicles. Car started overheating about a month ago. The fan should have been on @ 100% during an overheat situation. So, when coolant temperature changes, the thermo switch reports this change to the computer through a voltage signal. Member. This morning before work I stopped at autozone and picked up a new relay, ect sensor, and temp. It was the Cooling Fan Module. If you cannot find any other radiator fan problems, the clutch is most likely the cause. It could be low on refrigerant or a bad relay, a sensor, an ambient temperature switch or the AC pressure transducer is bad. First, removed the top cooling fan relay and stick a paper clip or jumper between pins 3 and 5, and another between pins 7 and 8. 2 and No. on my vehicle - ML 55 - the cooling fan controller and fan are integrated. Fuel pumps on most modern vehicles are electric and […], Your engine needs proper ignition timing; to ignite the fuel at exactly the right time. I noticed my cooling fan stopped working and would only come on when I had the AC on. Discussion Starter • #1 • May 8, 2013. Next, I checked the relays, both tested operational. The easiest way to check it is; visually check it for a … Whether the engine is running or not. If the fan motor is good, the fan should spin at normal speed when supplied with 12 volts. 05-12-2008, 11:52 PM. Resident experts will be on hand to help you keep your car in tip top condition. The problem of the radiator fan not working will cause tremendous damage to the engine and thus must receive immediate attention when it arises. On most modern cars, the cooling fan is controlled by the Engine Control Unit (ECU) which gets a signal from the coolant temperature sensor. Otherwise, the switch is not working. Fuel Pump Relay – Function And Testing Procedures, Engine Stalling Problems – Possible Causes – What To Check And Why, Automotive Engine Overheating – Common Causes And Consequences, Fuel Pump Issues – Excessive Heat – Contamination From Dirt and Rust, Antifreeze In Oil – Can Be Catastrophic, If Not Dealt With Quickly, Ignition Coil – Function – Coil Types – Failure Symptoms – Testing, Mass Air Flow (MAF) Sensor – Measuring Air Volume, Density, Temperature, Noid Light – How To Test Fuel Injectors Using A Noid Light. A manual fan is connected to the engine drive pulleys and is controlled by a thermo fan clutch which senses radiator heat and engages when the engine is running at higher temperatures. Causes the A/C to disengage at low speed/idle (works fine at highway speed). Your engine cooling fan will not work if you have a blown fuse. However, the fans do work when I turn AC on. 2. if engine at long stand still,the engine temperature will rise about 190 degrees the cooling fan suppose to automaticaly turn on when coolant temperature sensor get hot it cause its resistance decrease causing pcm to send power to coolant fan relays and cooling fans, when you turn on AC the cooling fans suppose to turn on to cool down AC CONDENSOR, IF NOT AC WONT WORK COOLING FAN … Also most cars, when the AC is selected the fan or fans will go to ON all the time while ac is on so the ac works correct and engine does not overheat. Usually a bad or failing cooling fan motor will display a few symptoms that can alert the driver of a potential problem that should be serviced. The quickest way to tell whether or not the electric fan(s) are working is to start the engine; let it reach normal operating temperature and then turn the A/C on. You need to inspect all the wiring leading into and out from the radiator fan. Your cooling fan operates through a series of circuits. Hello, I have been researching an issue with my cooling fans on my 2005 Silverado on the forums, and hoping someone could assist me. Cooling fans will not turn off: If the cooling fans are staying on all the time, this is another (less common) symptom. DO this easy check First!If your Honda Fans aren't working it can be easy repair. 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. Check power and ground at the fan connector. - Answered by a verified Ford Mechanic. Fan Clutch. If you short those wires together the fan should come on - check it that way. Jump to Latest Follow 1 - 12 of 12 Posts. If you spin the fan manually, when it is cold, it should have less friction than when hot. When it malfunctions or breaks down, it affects the fan. One of them should turn on the test light. Had the AC system checked. Volkswagen Jetta owners have reported 16 problems related to cooling fan (under the engine and engine cooling category). The engine cooling fan does not come on and I have become lost on what the problem may be. In that case, the temperature gauge will remain in the blue. The ground path is provided at G101. My coolant temps were spiking to 230 deg and still the fan would not kick on unless I had the AC on. Not sure what engine you have so this is for a 2.2 - Engine coolant fan should come on at low speed when engine temperature is 223 degrees or A/C high side pressure is 190 PSI. If you do have low coolant, don’t fill it up until the engine has cooled off. Now suspecting faulty sensor to temp gauge. When the temperature exceeds a specific value -- usually 215 degrees Fahrenheit -- the computer will turn the fan on. Which means it should start coming on; after the engine reaches full operating temperature. If this clutch goes broke, the fan won’t work. Issues with the cooling system can also cause the engine to run cold. Honda Fans not working? Post The steps are the same for your relay. The electric fans still work in the Buick when AC is turned on, but the problem still remains on the truck fans. • After the vehicle is shut OFF if the engine coolant temperature at key-off is greater than 101°C (214°F) the low speed fans will run for a minimum of 60 seconds After 60 seconds, if the coolant temperature drops below 101°C (214°F) the fans will shut OFF. Engine Antifreeze Coolant – What Does It Do ? In older cars, this typically takes about 15-20 minutes for the engine to reach the right temperature. Fan Clutch. So, when checking for cooling fan problems, a modern vehicle may present a challenge. Defective fan relay. One of the first symptoms of a potential problem with the cooling fan resistor is engine overheating. If it’s not working, the fan won’t turn on when it needs to, which means the engine might overheat. My fan would work when not driven and always come on with AC but after being driven on the road the fan would stop working even with the AC turned on. The engine cooling fan system consists of two electrical cooling fans and three fan relays. by r8gti » Sat Jul 25, 2015 12:08 pm, #9 If you can’t find a suitable relay, you still can test the relay. If it does spin but doesn't come on later when needed, you have ruled out the fan motor but not much else so far. A coolant fan switch is a small and very simple switch comprised of typically two wires. My son used the car for a while and he replaced the water pump, removed the thermostat and replced the hoses but he said it kept over heating. If it doesn't spin, a code should have been recorded. Messages 86 Likes 24 Location chapmansboro. This lead me to suspect the fans, so I tested the fans themselves (independent dual electric cooling fans). 9 posts • Page 1 of 1. Timing Belts – Why Should You Replace Your Engine Timing Belt, Engine Spark Knock – That Annoying Knocking, Pinging Or Rattling Sound, Tailpipe Smoke – What Does The Color Of The Tailpipe Smoke Mean, Engine Coolant Leaks – How To Find Them – How Bad Are They, Valve Lifters – Hydraulic And Mechanical – What Is The Difference, Radiator Cap – Basic Function – Failure Symptoms – How Important Is It, Engine Bearing Replacement – Learn How To Replace Engine Bearings, Ignition Timing – Your Engine Knows Timing Is Everything, A wiring problem (blown fuse, loose or corroded connector, shorts, opens, etc.). Electric cooling fans are used, to move air through the radiator, when the vehicle is not in motion. Post One of the first symptoms commonly associated with a bad or failing cooling fan relay is an engine that runs hot or overheats. The engine started to run hot in traffic, with poor AC performance, and I found that both radiator fans are not coming on, even with AC compressor engaged. Your test light should come on. Older cars have glass; cylinder-shaped fuses with stainless steel on the ends and glass in the middle. So I checked the two cooling fan fuses and three relays and they were all good. Post Rover 200 & 400 Owners Club Members Section [full members only - ask a mod for access]. I swapped all 3 relays with the same relays in my 2005 Lesabre. R. R383L_V ... the fans wont turn on!! If your engine is overheating, or shows signs of running hotter than normal; you may have a problem with your electric cooling fan. The electric cooling fan saves energy by only running, when it needs to remove excess heat away from the engine. The relays are arranged in a series/parallel configuration that allows the PCM to operate both fans together at low or high speeds. When you changed the radiator, did you change the thermostatic switch on the radiator or re-use the old one? by r8gti » Sun Jul 19, 2015 11:43 am, #4 Update on the cooling fan it kicked in today when temp gauge was in top quater. Author. Message. The relay cover shows the terminal pin connections. If the fan does not operate, continue troubleshooting. Like any other clutch, a fan clutch will wear out over time. Is it the same sensor that drives the dash display that is also used to switch on the fan? In newer vehicles with computerized engine controls, cooling fan operation is regulated, by the (PCM) or a fan control module. by RoverRevival » Sun Jul 19, 2015 10:44 am, #3 This lead me to suspect the fans, so I tested the fans themselves (independent dual electric cooling fans). Also... temp sensor is mounted on the engine on the 1.6 variants. Consequently, Most of the time power will fall […]. Post I wired the fans directly to the battery and they work. Let it cool down first. cooling fan not working :( S Type 2002 3.0 V6. The fan has a final stage resistor built in so it gets a pwm signal for activation and speed. 9 Posts . I have a similar problem and cannot find my specifics after doing a lot of research and forum reading, so I hope someone here could help me. Your Kia Sportage‘s radiator fan has one of the most important jobs on the vehicle.It is the last line of defense between you and an overheating engine. Finally, Keep fingers and tools away from the fan blades. Finally,  the computer or module uses this information, to activate the cooling fan through a fan relay(s). on mine it was caused by a broken wire in the connection to the coolant sensor in the side of the radiator. The Part Number is : Cooling Fan, (ID 6E53-8C609-AA) I ordered the part and was able to pick it up and I just dropped it off at the auto shop. #1 I changed the 10 amp fuse for the fans … Connect your test light to battery ground. This is the place for asking advice and help on technical problems. This basic video will help you understand how cooling fan works and how to troubleshoot them before you spin hundreds of dollars in repairs. Cooling fans do not function. If everything else seems on the up and up, the springs in the fan clutch … The most common symptom of a faulty cooling fan motor are cooling fans that do not come on. (ECT) Engine Coolant Temperature Sensor – What Can Go Wrong, Engine Rattling Noise – Where Is It Coming From – How Bad Is It, Engine stalling problems can be hard to find and are often sensor or temperature related. sensor...still not working. the radiator alone is pretty expensive. i need a coolant temp sensor too. Start and idle the engine, and back probe the connector terminals with the test light. Most newer cars have a different style of fuse that uses a plastic housing; with the fusible link encased in the housing. Your Altima’s radiator fan will not kick on. Cooling fan not working 2009 ford flex 23 Answers. Adding coolant to a radiator dry enough not to trigger the engine temp sensor can cause problems from drastic temperature change. In the city or heavy traffic the gauge will go to the first tick mark past 12:00 and the fans come on. Electric radiator-fan motors are switched on either by the ignition switch - and run while the engine is working - or by a thermostatic switch. switch. If you do have low coolant, don’t fill it up until the engine has cooled off. The fan will usually store a fault in the dme for activation or ihka system faulted for excess pressure (because fan is not coming on). In general; most vehicles on the road have two types of fuses. If You Think The Problem Is The Cooling Fan Relay, Test It ! The fan clutch is responsible for attaching the radiator fan to the engine and makes it work. omend out relay in fuse block in engine its good 30a fuse good,is there a tempeture sensor for fan, is the fan motor electronic, fan … The computer turns the cooling fan on and off when it receives a temperature indication from the coolant temperature sensor. - High speed fan should operate at 230 degrees or 240 PSI on the A/C high pressure. – Why Do You Need It ? The clutch may be defective. Since you omitted the model, year and engine size we cannot assist you with specific details on where these parts are etc. Engine Cooling fan is not working at all on my 2004 Chevrolet Cavalier (not even with the A/C turned on). r8gti Posts: 7 Joined: Wed May 27, 2015 2:54 pm. mine needed replacing. by r8gti » Sun Jul 19, 2015 11:05 pm, #6 The clutch assembly for your car’s cooling system is what keeps the radiator fan attached to the engine, ensuring it has the right amount of power to keep propelling. Re: 99 seville.. cooling fan not working Fans run in SLOW at 224 degrees F, FAST at 236 degrees F if there is no air conditioning or DEFROST function set. And engine gets very near to overheating during stop and go DC rush hour traffic. Thread starter THE COOP; Start date Jun 3, 2020; T. THE COOP. by r8gti » Sun Jul 19, 2015 10:27 am, #2 I have a 1995 Ford Mustang with a 3.8L engine. Moderator: Forum Staff. Hi, I have a 1998 Caravan and the engine cooling fans wont go on. by RoverRevival » Sat Jul 25, 2015 1:44 pm, Having problems with your 200 or 400? What is my problem. If the cooling fan motors burn out or fail, the cooling fans will be disabled. COPYRIGHT © 2021 DANNYSENGINEPORTAL.COM BY DANNY BENDER - DISCLAIMER: All wallpapers and backgrounds found here are believed to be in the "public domain". If the wires between the positive and negative … So, What happens if the ignition system fires at the wrong time. If the fan runs, the fan motor, relay, fuse and wiring are all okay. My cooling fan is not working properly while AC running and AC is not cool. Engines; Accessories/Keys; My Cooling Fan Won't Stop Running on My Radiator by Don Bowman . I've put my Mini dashboard computer in to test mode and got it to display the water temperature on the display. Try taking a direct feed from the fuse to the fans and keep them on perminently better than no fan , over heat , no engine. Consequently, A broken armature will rattle around the relay. We do not intend to infringe any legitimate intellectual right, artistic rights or copyright. Discussion Starter • #1 • 7 mo ago. Working as part of the engine cooling system alongside coolant, a radiator fan blows cool air through the radiator as a means of heat transfer to prevent the engine from overheating. This is the place for asking advice and help on technical problems. by richard moss » Sun Jul 19, 2015 10:04 pm, #5 This didn't seem to resolve the issue -- the engine still overheats when at a stop. 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Check their integrity by using jumper wires to route power directly to battery power: the relay, and... In tip top condition come on - check it is cold, it should have less friction than when.... Year and engine gets very near to overheating during stop and go DC rush hour traffic.... Keep your car in tip top condition not come on - check it is the still! Turn off and the engine cooling fan on engine start-up discussion starter • # 1 • mo... Dangerous temperatures and damage engine components the AC on light: the inoperative cooling fans another! Possible that a wire has worn out due to heat and needs.! Temps were spiking to 230 deg and still the fan the torque according to battery! Asking advice and help on technical problems Camry that has fan working ok but nothing change – should! Good idea to shut off after 3 min means it should have been recorded engine temperature go! Be replaced motor.. still not working will cause tremendous damage to the setting! 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And glass in the middle city or heavy traffic the gauge hits the top two relays are in... Right, artistic rights or copyright shorted wire or replace the fan blades connection to the turns! Out or fail, the clutch assembly isn ’ t working properly, begins... Drives the dash display that is also used to switch on the ends and glass the! The car will remain at 90 degrees and the engine cooling fans will automatically off..., artistic rights or copyright spin at normal speed when supplied with 12 volts flex 23 Answers located... Will wear out over time about 15-20 minutes for the engine can reach dangerous temperatures and damage components. Issues with the cooling fan does not come on - check it for a … cooling fan working. The blue dry enough not to trigger the engine cooling fan on coolant temperature ) sensor is located on fan... Or module uses this information, to move air through the radiator.... Tick mark past 12:00 and the cycle repeats ; visually check it is possible that wire. Radiator cooling fan on and off when it is cold, it should have less than! Rush hour traffic and AC is not working even when the gauge will go to the maximum setting this... It that way from, transferring heat away from the coolant sensor in the middle activate the fan.

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