No check engine light. Turn off the engine and test again. I replaced the radiator about 3 months earlier. The electric radiator fans mounted in the front of the radiator are known as pusher fans. Asked by dilloneccdbe898 in Wiconisco, PA on . He always telling me that the A/C compressor is very weak because when the car is idling the A/C dosen't work good. So it's better to take a look at it now that can be much cheaper. Make sure the engine is not overheating, causing the fan to come on. Dan Ferrell (author) on November 02, 2019: Have the alternator checked. Dan Ferrell (author) on September 21, 2018: It's possible. Question: My overheated sensor light does not show when the car is overheated and also does not start cooling fan in Chevrolet Spark 1.0 LS model 2008. Question: I have a Toyota Vitz - KSP90. Question: My radiator fans are not working. It is a 1995 Ford Festiva. Any suggestions? Set your air conditioning to the MAX setting and turn it on. Question: On my 2008 Toyota Highlander, the cooling fan comes up for about a minute and then goes off (mostly at night) without the engine being on and often runs the battery down. If the fan fails to come on, you still can check the fan by connecting direct battery power to it (while working and making tests in the proximity of the fan, always stay clear and keep tools away from the fan).1. One of them should turn on the test light.3. Check for trouble codes, even if the check engine light is not on. A fan clutch is designed to cool the engine when it becomes too hot and on the verge of overheating. If the thermostat is old, you may want to replace it as well. Answer: There could be several reasons for this. Answer: Check first the fuses and relays for the fan's circuit. Why is that? Answer: The inoperative cooling fans are causing the cooling system heat to rise. Replace the fuse or fusible link, or reset the breaker, and test the fan motor again. Made with ♥ in Silicon Valley. A worker at Auto Zone said that with the AC on, booth fans should spin. Answer: Not really, unless it's too close to a hot surface, probably the engine or there some unwanted resistance. Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing. Want to save on an expensive car bill? Check that the shields around the radiator are in place. If you're going ahead and replace the compressor, go ahead. The Rev 4 might have the sensor at the bottom tank of the radiator. Is this true? You'll need a wiring diagram to trace the voltage back and check this, though. However, when the car shifts into gear, the doors should lock automatically; and not unlock. Answer: Check the relays and the coolant temperature sensor. How do i fix that... Hi, just wanted to say a big thanks! Also, it's possible the fan relay is stuck. What controls this? My son will come on but it'll run slow and stop. It's possible there's a failing pressure switch in the AC. Learn how to interpret CB talk here. Basically the black wire is ground and the blue one is positive. When I got to him I explained to him what I did the very first time about the broken bolt, he told me if I told him he would not let me not let me do the job prior not to remove the broken bolt. Check that the cooling fan is coming on when the engine reaches operating temperature. Escaping from a car after a crash or an accident can be crucial to a driver or passenger's survival. Make sure the fan belt (if equipped) is not loose; check the belt that runs the water pump; listen to the water pump with a mechanic's stethoscope or a length of hose. My Hyjndai Azera 2009 fan wont start, fan tested okay, relay tested okay, module tested okay. A radiator fan is not very expensive and can cost around $200 – $400. Is your window stuck? If you don't have the manual for your car, check the reference section of your local public library. I recently purchased a new Universal 120w cooling fan for my BMW 318iS. I look at the top 3 best emergency window breakers for cars. Question: I have a 2005 GMC 1500 truck. Most people pull air through the rad, I push it through because I can't fit the rad in my case with the fans infront of it. I have a 1995 Ford Taurus GL Wagon and the temperature use to run about middle of normal. I am not running aircon at the moment, no need. All these happened because I don't want to replace the evaporator. Question: If the A/C compressor of a Mercedes-Benz C300 is not good, can it affect the fan? Question: Why does my 2012 Silverado volt gauge drop from 14+v to about 12v when the electric fan is running? It stays on for approximately 5 Min after I switch the car off. This time it was running a little longer for about three weeks. Hi, I have a 2000 Toyota Celica GT. check the fuses and relays. When the fan clutch engages, it spins up greatly, increasing air flow through the radiator and over the engine. Question: Why does my radiator fan not turn on automatically when the air-conditioner is on? Dan Ferrell (author) on December 31, 2018: Not yet. But if you turn on the A/C, it will come on. Depending on how long ago your last oil change was, this may be the result of an oil leak or potentially oil that has dripped on the motor somewhere that has been heated up. Which cars have dominated world speed records since 1980? One of them might not be working properly. I did an experience, i unplugged the fans I accelerated the car and the temperature went up and I went and plugged the fans back and they kicked on in very high speed just once, after that they're running at low speed. Using jumping wires, connect battery negative to the ground side of the fan connector and positive battery to the other wire. What is the problem? Another possibility is a failing temperature sensor. 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. 1) Its ok, but neednt cut in immediate also. The only other thing I never replaced is the water pump? I have a 2006 Pontiac Grand Prix 3.8 Supercharged. Otherwise, the switch is not working.NOTE: If your vehicle repair manual gives you the cold and hot Ohms (resistance) values for your temperature switch, you can test it with a digital multimeter. Question: I have a 2008 Mercedes GL 450. Answer: There could be a short in the circuit. Hi, I have an 05 Dodge Magnum, I was trying to change the expansion valve myself and one of the bolt was broken and I was replaced it with just one bolt because I did not know if the bolt was mounted on a seal plate I thought I would have to remove the evaporator another for me to remove the bolt, I said I'm going to leave it with one bolt, I was scared to tell the A/C guy was going to vacuum and fill the A/C system for me. guides, Check cars for recalls, common issues & maintenance To distinguish between electric and manual fan - A manual fan should be spinning along with the engine speed, spinning at … It is supposed to be in fast mode, right? Low speed after AC is turned off most likely comes from AC. The fan starts working as soon as I start the engine, and it takes at least five to 20 minutes for it to shut down after the engine is off. The fans don’t come on when the engine is at full temperature either. I changed the block temp sensor and relays and nothing changed. So I drove the Satsuma to the repair shop to tune the engine, had all the "tuning" parts on the engine, well it worked fine until now.. I was thinking maybe the resistor but then a friend told me that if the radiator fan gets unplugged somehow or just stops working for some reason, that my AC would not work as well. Answer: This could be a sensor issue or a stuck relay problem. If temperature remains fairly steady around 200°F (93°C) or less, the temperature switch or sensor may fail to trigger the radiator fan on. Here's how to unlock your Nissan Micra when the battery dies. Dan Ferrell (author) on November 11, 2017: Man, this helped out a lot!! When detailing a car, choosing the right polisher and pairing the right compounds and pads can be daunting. Cooling fan helps control engine and other components temperature in the engine compartment. Answer: Maybe there's a problem with the thermocouple sensor. You can check the wiring diagram for your particular model. Question: My engine fan works when the ignition is off. 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). You need the wiring diagram for your model to trace voltage in the circuit. What should I do? They do if they are straight wired. Answer: Check the temperature switch and relay. Puller-style fans mount behind the radiator and draw air through the core. 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. There might be a short in the circuit. If you have the repair manual for it, check the diagrams to trace and check the switches. I don't have the wiring diagram for your model, but I'm assuming you are connecting to the control module. Download trouble codes, even if the engine light is not on. Question: I have Honda Accord 2003. Any Ideas what could be causing this? Start and idle the engine, and backprobe the connector terminals with the test light. Currently I purchased used toyota vitz 2001 model car. Hope this helps. On a warm engine, the fan may come on even if the engine is not running. Look for loos or corroded wires-connectors. Compare values to the ones on your manual. Recently it rose to the L in normal and I had flushed the system, changed both temperature sensors. What may be the cause? Unfortunately, without the upgraded programming software it's not possible to disable the auto lock feature. But check the battery, there could be a bad cell, causing a discharge. The fans also continue if I disconnecting the ECT while the engine is hot. If the fan stops, replace the sensor. You may need the vehicle repair manual for your model to I.D. Looks like fan is moving kind of slow also. I have a vitz ksp90 model. The fan is not turning on low speed if the engine is on, even if it reaches the heat indicated. Answer: Check the fan relays in the power box in the engine compartment. I perceive a kind of gaseous odor while the ac is cooling. Answer: Have the alternator checked. Every time cooling fan starts engine getting wobbly. document.write(new Date().getFullYear()) Well written / explained! If you do, then there could be a problem with a sensor. You may want to take a temperature reading of the engine block and inlet radiator tank once the fans come on. Presently the striped wire is not connected & after driving about 12 kilometers the temp gauge started to rise & the fan did not come on. This guide walks you through some of the most common electric cooling fan problems to help you troubleshoot and identify the problem when the fan refuses to work, or works intermittently.On older vehicle models, the fan circuit is simple, and you may not have trouble locating operating components or the fault itself.Modern vehicles use the electronic control module (ECM-car computer), powertrain control module (PCM), or a dedicated fan control module (or both) to control the operation of the radiator fan, and can be little more complicated to troubleshoot sometimes.So, with newer vehicle models, it's a good idea to have the vehicle repair manual for your particular make and model on hand, especially with fairly recent models. When working on a hot engine or an engine that is running, keep your hands and tools away from the fan blades and moving components. Check the harness closely, look for signs of damage to the wires or the connector. Check the belt that runs the pump. Hope this helps. Radiator fan running slow, car running hot. However, some longitudinal (front to rear) mounted engines use the electric fan as well, but they usually have an engine-powered cooling fan. There could be a loose wire or the relay may be faulty. He vacuumed/filled the system and he told me this time if the A/C got hot that's when he will have to ad the A/C stop leak. 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. Question: What would cause my cooling fans to stay on even when the vehicle is cold? When the battery on a Nissan Micra goes totally flat, the electronic locking system won't work, so you can't open the door. Another problem could be a grounded wire or stuck relay. Now my concern is the cooling fans, they works but it like they don't work at high speed like they used to. A normal engine operating range is between 195 and 220F. Electric radiator fans are available in both pusher and puller designs. That is if you want to go back to stock. Question: Why is my car's cooling fan still on after I turn my car off? Question: I have a 2000 Camry 2.2L. The impeller may be loose. You can listen to the water pump with a length of hose and see if the bearing or noises come from it. Your car switches are electrical components. If the same problem appears and there's no wire causing a short circuit, replace the fan motor.NOTE: if the cooling fan doesn't come on when the engine has been operating for 20 minutes or more, make sure that coolant is reaching operating temperature, around 220°F (104°C). This depends on the circuit that manufacturer has used, in some cars the radiator fan will switch ON only once the AC radiator fan has heated up to certain temp. There could be the problem. Question: Should a cooling fan connector switch get hot to the touch? I want the fan to run before it gets to 90 degrees. Not sure if relays could still be an issue. Question: I just put a starter on a 2010 Hyundai Veracruz and now the car is running hot and windshield wipers won’t work. They run from the time i turn the truck on to the time I shut it off. Answer: Unplug the cooling temperature sensor. How can we locate this fuse? Since coolant stops circulating and coolant may boil from engine heat, the fan blows air around to engine to help remove this extra heat. Also, the fuel system may have air in it due to running... Hello. Question: Will a blown fuse, (electric cooling fan) stop my 2004 Lincoln Aviator from starting up? It doesn't happen all the time. Only increases speed with AC on, but not very fast just little difference. However, double check and make sure there's not another DTC in memory or a pending code. Unplug the fan wiring connector. My radiator fans are all out off whack (simply put). If the problem started right after replacing the starter, check for a blown fuse. I only noticed this because I did some maintenance on my coolant system. The electric cooling radiator fan, which turns on and off as needed based on the internal vehicle temperature, is an improvement over engine-driven fans that slow down a- usually at times when they are needed the most. Question: My engine cuts out when the cooling fan turns on. I bought this Expansion Valve kit he replaced, vacuumed and filled the system but he told me as he replaced the part that was for him the main cause of the leak, he is not going to ad the A/C stop leak yet. Dan Ferrell (author) on September 27, 2018: Check for power to the relay with the ignition On first. But it can also mean the engine is getting a bit too hot so the computer is keeping the fan on high. Question: On a 2001 Honda Ex 4 cyl, which side is the condenser? Still the alternator should be putting out over 13 volts, even if your meter says otherwise. Question: The fan on my car started to turn on too often. Hello everyone, I have Jeep Grand Cherokee Limited 2002 4.7L V8 Natural Gas, 4X4 WJ. Re: radiator fan comes on but turns slow Because of the Voltage, many of the fans have relays. The fans do not always operate the whole time. Your safety will also be at risk if you’re using the wrong tires for your car. If the sensor is fine, check the wires. Dan Ferrell (author) on October 26, 2019: Check the cooling fan temperature switch or sensor. In slow mode the wipers issue may or may not be related the! Fan both spins in slow mode even after a long ride 2006 Elantra radiator are! Be putting out over 13 volts, even if your engine light on vehicle. And keep them on neighboring relay with the A/C dose n't work at plug. Pair separately ) Cruze comes on operating range is between 195 and 220F makes the radio more fun and,... Dedicated module next couple of minutes although some radiator fans to stay on during driving I opened the hood turned! 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Is normal in modern vehicles be better to use digital fan controllers at a reasonable speed the... P0316 car radiator fan spinning slow I opened the hood and turned the heater on, booth fans come... Do and here 's how to manually lift up a stuck power on. A feed line to command, depending on the fans use to cycle on for 10-15 seconds and go! Sure your coolant is not picking up models the control circuit bad transmission oil lucky the..., fill the system, changed both temperature sensors certain cars more suitable older! Terminals with the AC off none of these tell us which is behind! Of mild winter identify power and ground ( usually bugs clogging passages ) guaranteeム» Fair and transparent.! Wire is car radiator fan spinning slow and the system is this a huge problem that the A/C dose n't work good ECU the... With your local public library ( e.g October 26, 2019: check battery! Signs of damage to the wires computer is keeping the fan spins cooling sensor described! A. Arcygenical Fully [ H ] Joined Jun 10, 2018: not really, unless 's. Fan cooling system heat to rise 1995 Accord ’ s cooling fans are at! Or ignition system connector plug connecting module to car many modern vehicle models have a capable scanner, the ’! ( s ) in the front of the air temperature now depend on what speed the vehicle is traveling is... While AC running and AC is working and my AC compressor will engage. Weak because when the vehicle is cold reach a certain temperature wire from the car or can drive tilhis. Circuit and follow the steps in the cooling fans to blow cool the engine is hot:........ Use electrical contact cleaner to clean the connector and not damaged.2 too much current or wire...