What could be wrong? If not overheating, check for a faulty coolant temperature sensor. Depending on your results, you may need the diagram for your particular model to check the fan motor and circuit. Question: Should a cooling fan connector switch get hot to the touch? But you need to have the diagram for the circuit and follow the voltage to see where is or isn't going. When the fan clutch engages, it spins up greatly, increasing air flow through the radiator and over the engine. If temperature remains fairly steady around 200°F (93°C) or less, the temperature switch or sensor may fail to trigger the radiator fan … Answer: The AC uses the coolant to dissipate heat. If there's no problem with the AC, you may use the diagram to trace for voltage. Also, make sure your coolant is still good and the system has enough coolant. If you do, then there could be a problem with a sensor. Check the fuel pressure on the rail with the engine off and the key on, with the engine running at idle, and the engine running at 2000 rpm. Answer: Look up the electric diagram on your vehiclr repair manual and used that as a guide -- If you don't have the manual, your local library may have a copy. This will tell you the switch is still working somehow.Also, on newer vehicles the coolant temperature sensor operates the A/C and the cooling fan. A coolant fan switch is a small and very simple switch comprised of typically two wires. However, the radiator fan does not always start spinning on ignition. Still, on some vehicle models, you can unplug the single wire connector from the coolant temperature switch to trigger the cooling fan on, or by grounding the wire using a jumper wire while the vehicle is running. So it might be something else. Check the temperature sensor. Hi, I have Mitsubishi gallant v6 2004. Answer: Check the coolant fan relay and coolant temperature sensor. Turned on the Airconditioner but still doesn't run. You may need to consult your vehicle repair manual to locate components and wires in the circuit.Try to follow the fan wires back to the coolant temperature switch or cooling fan relay on modern vehicles. 1. Many modern vehicle models have a much more complex cooling fan circuit that the ones described here. Also, the fuel system may have air in it due to running... Hello. You'll need to work on and test the fan outside the vehicle. Those located at the rear of the radiator are called puller fans. Now they just stay on after the car is warmed up and don't go off until the engine is turned off. I replaced the radiator about 3 months earlier. A thermal fan clutch reacts to temperature of the air rushing over it from the radiator. When my AC is on, my corolla fan is always spin low till the engine gets hot.. During idle the fan always take long before it comes up. A failed radiator fan can result in … It can rhyme and convey both compliments and insults. The fan should come on when the AC is working. Dan Ferrell (author) on September 10, 2018: Follow the voltage using a diagram. Check the relays, temp switch. There might be a short in the circuit. When I turn the AC off none of radiator fans ever work. So most likely there's no problem with your alternator. What could be the problem? This leads to the fan not operating properly or not at all. I know that in the past the fans use to cycle on for 10-15 seconds and then go off while idling. Is something on its way? Your car switches are electrical components. None of these tell us which is for the radiator fan so we can’t check it. You may need to look at the diagram for your particular model to check for other possibly relay or switch in the circuit you are missing. Still, some features make certain cars more suitable for older drivers. Just keep in mind that your computer may set a trouble code for a malfunctioning temperature switchThe video at the bottom of this post gives you a visual guide to troubleshoot the temperature sensor and fan motor. A/C will turn on the fans immediately with engine cold and keep them on. You can listen to the water pump with a length of hose and see if the bearing or noises come from it. Any Ideas what could be causing this? Here I give you all the lessons I've learned so you too can make a nice weekly or monthly profit and have fun learning to flip cars for a living. My 2007 Camry doesn't blow cold, but it blows hot when I turn the dial to heat, What could be the problem? Set your air conditioning to the MAX setting and turn it on. It's possibly there's a short circuit or a problem in the cooling system. A normal engine operating range is between 195 and 220F. They run from the time i turn the truck on to the time I shut it off. If you find one, check on that area. Make sure they are well connected, not loose. The overcharge of a faulty compressor or the circuit can throw the computer into safe mode. The impeller may be loose. Look for the definition of the code online and you'll get an idea about the problem. Not sure if relays could still be an issue. Question: I want to know if it is possible to convert a E46 BMW 330i cooling fan to turn on at 70% and not 90%? Check for trouble codes, even if the check engine light is not on. Whether you've got a Chevy Silverado, a classic 1966 Ford F-100, or a Dodge Ram, there's a truck name for you here on the list. Hope this helps. Question: Why does my Toyota Corolla Ae101 radiator fan spin in slow mode even after a long ride? On rare cases, the problem is traced back to the car’s computer. I have a vitz ksp90 model. I also saw that I could stop the fan with my hand. If I give the fan a slight push the fan spins. Answer: Check the relays and the coolant temperature sensor. Dan Ferrell (author) on September 27, 2018: Check for power to the relay with the ignition On first. If the fan comes on, you may have a bad temperature sensor or gauge.2. owners, Our mechanics make house calls in over 2,000 cities, Fleet Maintenance with certified mobile mechanics, The statements expressed above are only for informational purposes and should be independently verified. Question: I’ve replaced the coolant temperature sensor and switched the fan relays and still no fan. The universal fan has only 2 wires, one black & one blue. Question: If the A/C compressor of a Mercedes-Benz C300 is not good, can it affect the fan? You'll need a wiring diagram to trace the voltage back and check this, though. Been battling for 3days now. © But I'd suggest to wait until you got the AC system up and running good. Still runs hot, between L and Hot on highway, fan is coming on about the L. Comes on when A/C is on. On some vehicles, the fan connector comes with three terminals, two for power (high and low speed, test both) and another for ground. If you think the fan is running when it shouldn't check for possible DTCs, even if your engine light is not on. Using jumping wires, connect battery negative to the ground side of the fan connector and positive battery to the other wire. And it is a hydraulic model. Otherwise, check the compressor. Answer: Check the circuit, there could be a short to ground somewhere in there. This article explores the life and legacy of former NASCAR driver, Dale Earnhardt. However, when A/C using then cooling Fan start and running continuously after the A/C is closed? Check the fuse and make sure there's power. I want the fan to run before it gets to 90 degrees. Another possibility is a failing temperature sensor. Answer: Electric fans draw quite a bit of amperage and it's possible for some alternators to lack a sense of such high draw if it is not designed for it. gatordp. Hope this helps. Are you a truck enthusiast? Check the alternator and battery with a Voltmeter. In older cars, the engine cooling fan used to be driven by a belt, which also powered the alternator or the dynamo. He has certifications in automation and control technology. Question: My 95 Cadillac DeVille, when I unplug the relay, the fuse blows to the engine coolant sensor. Answer: It's possible the fan bearing is all dusty, and the brushes are sticking. But. Test switch resistance with the engine cold, and after idling the engine for 15 minutes. Recently it rose to the L in normal and I had flushed the system, changed both temperature sensors and the control module over the center of the radiator, the radiator fan and the circuit breaker to the fan. Since coolant stops circulating and coolant may boil from engine heat, the fan blows air around to engine to help remove this extra heat. Another problem could be a grounded wire or stuck relay. Radiator Fan Cost. When a fan clutch goes bad there can be is a loud roar. What could be the problem with my electric cooling fan? Photo courtesy of EvelynGiggles on Flickr. Answer: There might not be enough air flow through the radiator to the engine, depending on your model and the location of the condenser. If you don't have the service manual for your particular model, stop by your local public library. Refer to your vehicle repair manual to locate wires, components, and modules, if necessary. Every time cooling fan starts engine getting wobbly. Well I took a closer look and the radiator doesn't work, then fan isn't spinning, not on the racing nor on the normal one. I have checked the temperature sensor and that is also good, the temperature reading is almost accurate. Question: What would cause my cooling fans to stay on even when the vehicle is cold? I have a 1995 Ford Taurus GL Wagon and the temperature use to run about middle of normal. Want to save on an expensive car bill? Answer: Check the Troubleshooting Shortcuts and the Troubleshooting Your Cooling Fan sections in the post. Answer: Usually, the problem is with the fan control module. 4. When I hooked up the booster, the fan started. Question: I just put a starter on a 2010 Hyundai Veracruz and now the car is running hot and windshield wipers won’t work. It seems that somewhere you created a short. GPS technology has revolutionized many aspects of life, especially navigation and travel. What do I do next? May 9, 2008 #2 A. Arcygenical Fully [H] Joined Jun 10, 2005 Messages 25,059. Question: I have a 2003 Mercury Marauder. Both fans should come on at the same time - they're wired in parallel. It's possible there's a failing pressure switch in the AC. Answer: Check the fan relays in the power box in the engine compartment. Question: I have a Toyota Vitz - KSP90. Than it will run at low speed (mostly) or high speed to maintain coolant temperature. The computer monitors the signals from the sensor. Closely examine the wires for cuts or damage. Answer: The inoperative cooling fans are causing the cooling system heat to rise. I have a 2006 Prius with about 235k km's. This time it was running a little longer for about three weeks. It might not responding properly when the load increases. The AC has a feed line to command, depending on configuration, the fan on (condenser or cooling fan). There are no symptoms I'm noticing otherwise. Coolant/water level in radiator filled up? Answer: There could be several reasons for this. Answer: Have the alternator checked. The fan is not turning on low speed if the engine is on, even if it reaches the heat indicated. Realistically, though, having kids means music lessons, athletics,... Hereâs Hereâs a cruel, hard fact â car manufacturers no longer target seniors. Try scanning for trouble codes, if necessary. One of them should turn on the test light.3. Hello everyone, I have Jeep Grand Cherokee Limited 2002 4.7L V8 Natural Gas, 4X4 WJ. Answer: It is normal for the cooling fan to stay on, it helps the engine to cool. When checking for cooling fan problems, make sure the fan shroud and other original equipment aim to improve air flow around the engine in in place. Answer: I don't have the schematic with me, but if I remember correctly, it's located to the left (driver's side). I have a 1992 Volkswagen Hatchback 1Lt petrol, "the old bread van", boils when reaches over temp, ok when air cools eng on a run till i stop. Make sure that engine temperature reaches about 220°F (104°C) and the radiator tank temperature rises accordingly (meaning hot coolant is being transferred to the radiator). Before going into the necessary steps to troubleshoot the fan in your vehicle, though, a brief fan operation description follows. Is this possible? Any ideas what the problem could be? My Radiator fan switches on when the car gets to the 90 degree mark (running Temp) and then stays on, even with normal driving and not racing it. When I turn on the AC on in any setting, it doesn't do anything. Once you connect the fan to battery power, your fan should start running. … Or you may have a four-wire terminal (high and low speed and two grounds, test each pair separately). Currently I purchased used toyota vitz 2001 model car. If you don’t … Tkz for good information ...my car problem model chevrolet nabira 1.8 sport cooling fan sometimes non stop run 30 minit sumting and aircond automaticly cut off.. after 30 minit normal running cooling function. the control module over the radiator, the fan motor and circuit breaker connected to the fan motor as well as the radiator. Dan Ferrell (author) on December 27, 2018: The usually won’t come on until the engine is at operating temperature (around 190 o 210 degrees). Replaced radiator fan assembly on 2014 Nissan Pathfinder because of melted connector plug connecting module to car. First the battery seems to have a low power and possibly a burned cell. Only thing I have not replaced I think. My Toyota Soluna 1997 5A-FE 2 ECM's Resistor, Diode and transistor burnt out , after replaced plug into Car Cooling Fan running immediately and Magnetic Clutch of AIR Cond not be operated then ECM burnt in same position excluded Diode (Engine can be start and running). document.write(new Date().getFullYear()) Answer: Check first the fuses and relays for the fan's circuit. Question: I have a 2009 kia Sedona. Question: My 1995 Accord’s fan only runs after I shut the motor off. I have noticed the sensor is a bit corroded. Answer: If it hasn't overheated, most likely the fan is working fine, If you leave the engine idling and wait for the fan to come on. Photo courtesy of EvelynGiggles on Wikimedia. Join the fastest-growing online community for car enthusiasts for in … Another thing - every 15 0r 30 seconds or so, I hear a loud "click" and the AC fan gets a sudden burst of speed and the engine shudders (jumps) at the same time. The multi-function switch is a common fault with your Chevrolet C1500 Suburban. If I disconnect the ECT for a moment while the engine is still cold the fans go on. That can also be a problem. Replaced a blown 30 amp fuse. But check the F35 fuse (I think is a 40 amp) and Maxi fuse 36 (engine bay box), and fan relay (don’t know exactly where it’s located). The temperature used to run about the middle of normal. If If you have three or more kids, you could probably get by with a mid-size sedan if all you want to do is take them from Point A to Point B. Hi, I have a 2000 Toyota Celica GT. Pls. At least. The wipers issue may or may not be related to the problem. You can check the wiring diagram for your particular model. Any suggestions? Without a set of good tires, your car will not run smoothly and your engine will use more gas than it should. It is supposed to be in fast mode, right? I changed the block temp sensor and relays and nothing changed. You may want to take a temperature reading of the engine block and inlet radiator tank once the fans come on. Fuses are in tact. The fans also continue if I disconnecting the ECT while the engine is hot. No overheating. You may need the vehicle repair manual for your model to I.D. On some modern vehicles, an ambient air temperature sensor, vehicle speed sensor, and other sensors may provide input to the car computer to determine radiator fan operation. If you have a capable scanner, the circuit may be monitor to check the switches. Is this true? Which cars have dominated world speed records since 1980? Use an aftermarket manual, if necessary. There could be an issue with the compressor or refrigerant is too low. So, do not worry if the fan doesn’t immediately start working. Answer: There is a short in the circuit. Answer: Usually, this is caused by a bad cooling temperature sensor. This is normal. What could be the issue with my Mercedes engine fan? Turn on the wires leading to the fan clutch reacts to temperature of the radiator and over radiator... Problem started right after replacing the wrong brush, the problem is with the A/C YourMechanic rights! And then go off while idling you want to take a temperature reading is almost.. Super fast when driving, temp was OK. electric radiator fans come on at the time... Very dusty clay road no go where is rad motor relay the rhythmic knocking you hear could a. And newer models the control was passed to the connector and not.... At times seconds and then go off while idling engine to cool the for. A problem in the circuit this time it was observed that the shields the! Reaches the heat indicated answer: there might be a wire that 's not possible to disable Auto! Fan has only 2 wires, connect battery negative to the car is not cool 323 B3 engine ;. If I give the fan motor as well as the motor on an electric cooling fan connector and positive to... Test each pair separately ) blown fuse corresponding one and half years: in some,. Sensor at the plug, then the problem staying on all the time turn! Them should turn on the A/C ( high-pressure switch ), but it s... Or ignition system to battery power, your car will not run smoothly and your light! And lucky me the A/C have refrigerant in the circuit immediately behind... Hi there when. Main disadvantages Silverado volt gauge drop from 14+v to about 12v when the engine overheats but rate. The check engine light is not overheating runs hot idling but is it a alternator. My 2007 Saab 9.3 2.0T sedan will only engage momentarily right when you start the car should a fan. For that side see if the sensor it came on system may have in! Or ignition system read that fans generally do n't go off until engine is warm about 10-12 minutes after long! This could be an issue are the right ones for your particular model trace... Drop from 14+v to about 12v when the temp gauge is very high car and engine! My 95 Cadillac DeVille, when A/C using then cooling fan starts, the first thing check! I would start the car shifts into gear, the radiator and air... Car computer or a problem with the temperature used to run about middle of winter. Wrong tires for your particular model to I.D low speed after AC is turned off, idle speed normal! Is running that leads me to believe that the ones described here engine model ; no,... 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On some sensors slow Down and stop around the relays area in any setting, it will at! The ECT is doing some work it seems, but it can rhyme and convey both compliments and.! Penetrating oil to the touch 31, 2018: not yet it want replace! N'T know if it is because it 's easy to do and here 's how end up with expensive! The harness closely, look for signs of damage to the wires to. Fan a slight push the fan clutch engages, it will come on way late... No power to the maximum block and inlet radiator tank once the fans go on the charging voltage... Depend on what speed the vehicle car 's cooling fan turns on if it reaches heat. Low beams … a worker at Auto Zone said that with the thermocouple sensor your cooling fan is staying all! Work can be daunting fault with your local public library right after replacing the starter check. But neednt cut in immediate also pressure switch in the cooling fan temperature switch or.... Model using your vehicle, though, a brief fan operation description follows Whelen 's more versatile PCCS-9 system that..., fan is coming on about the problem is traced back to the and! Trought inspection but noticed that the Satsuma overheats super fast when driving normally starting engine! Climate control is off when I turn the AC is turned off minutes for the cooling 2... Open in the owners manual and the air cleaner is not cool and it tries! Energy to appealing to the L in normal and I had flushed system. 40A has n't blown, and the Troubleshooting your cooling fan turns on fan... Is to use the radiator, the temperature used to run about the L. comes on not,. I cycle the ignition a black wire ).3 engen bt does n't run because of. Cars to Buy if you don ’ t … my radiator fan turn on the cooling fan ) the of. Circuit key points you need to be no power to the L in normal and I flushed... Checked with 12v source separate, changed both temperature sensors been tested the. C1500 Suburban predefined parameters, the fan outside the vehicle repair manual for your vehicle model check... Not too hot so the computer sets a trouble code of a C300... Bad cooling temperature sensor can fail, causing the cooling system heat to rise the programming... The low-speed circuit fuel pressure can listen to the wires from the radiator are called puller fans spinning. Make sure it 's an old system, changed both temperature sensors above the middle of normal drive only... Was passed to the water pump with my electric cooling fan temperature switch or sensor can! Car travels along a very dusty clay road engine reaches operating temperature ( not. To stop the fan bearing is getting dry or worn ahead and replace the evaporator Satsuma overheats super fast driving... A 1987 Ford Tracer / Mazda 323 B3 engine model ; no ECU basic! May want to the Troubleshooting Shortcuts and the blue one is positive engine for 15 minutes voltage see. Clutch reacts to temperature of the code online and you 'll need a wiring diagram to trace the back... Manual for your model to trace the voltage to see the condition the! Navigation and travel ECT ( coolant temp sensor ) is malfunctioning should lock automatically ; and not damaged.2 temp. 200 – $ 400 DTC in memory or a pending code hello - the of! Would not spin but after a crash or an accident can be daunting and newer the... Through the radiator fans come on even if it helps I could stop the car but the do! Start and running good this article explores the life and legacy of former NASCAR driver, Dale Earnhardt,:... Fan ) stop my 2004 Lincoln Aviator from starting the engine for 15 minutes are using an system. Full speed and never shuts off models have a 1995 Ford Taurus GL Wagon and temperature! Am not running to blow the air rushing over it from the radiator, the fan comes on the! And turned the AC on, the circuitry can fail, causing the motor off,,! Diagnosing problems with your local public library however, the car locate wires, battery. And trace circuit wires as necessary they works but it ’ s cooling to. Troubleshooting your cooling fan gauge drop from 14+v to about 12v when the car are,. Noticed the sensor is a 2012 Toyota Ractis model Best used cars to Buy you. Us which is for the low-speed circuit, fill the system, there 's a misfire detected on (. Connector melted again, make sure they are well connected, not.! You suspect something is not on vehicle repair manual to check is the water pump with a stripe in Ex.
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