Any Ideas what could be causing this? That can also be a problem. it is a good idea to get someone to check it out if you have a problem with the fan cooling system. Answer: The problem could be in the cooling fan circuit, a faulty battery, or (less likely) the charging system. Get an aftermarket manual to trace the circuit. Question: The Engine overheats but the relay is not picking up. Not sure when the fan issue started. They do if they are straight wired. GPS technology has revolutionized many aspects of life, especially navigation and travel. Wait for the engine to reach operating temperature. The cooling fans come on way too late: only when the temp gauge is very high. The fans also continue if I disconnecting the ECT while the engine is hot. On a warm engine, the fan may come on even if the engine is not running. Why is this? 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). It is located near the radiator and looks like a small radiator. Answer: It is possible to do this. The fan motor could be pulling too much current or the circuit has too much resistance. Troubleshooting a cooling fan that doesn't work can be a relatively straightforward task at times. Why is this? Without a set of good tires, your car will not run smoothly and your engine will use more gas than it should. AC compressor) or the belt itself. Fuse. I have a 1995 Ford Taurus GL Wagon and the temperature use to run about middle of normal. Is this true? Testing a failed cooling fan circuit can be tricky at times. Answer: Usually, this is caused by a bad cooling temperature sensor. Dan Ferrell (author) on September 10, 2018: Follow the voltage using a diagram. There could be another faulty relay or a problem in the wiring harness or connector. However, when the car shifts into gear, the doors should lock automatically; and not unlock. 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. Asked by dilloneccdbe898 in Wiconisco, PA on . Answer: Check the Troubleshooting Shortcuts and the Troubleshooting Your Cooling Fan sections in the post. 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. Sorry, I don't have the wiring diagram for this model but look for the fuse box, either under the dashboard or in the engine bay, ---firewall, driver's side possibly. Photo courtesy of EvelynGiggles on Wikimedia. 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. Really doesn't matter too much. Check the temperature sensor. It only turns on if it gets too hot. And talk to your mechanic about the fan operation. A normal engine operating range is between 195 and 220F. Hope this helps. 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). 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. Otherwise, check the compressor. CB lingo makes the radio more fun and useful, especially for truckers. Then it disengages and won't reengage until I cycle the ignition. How do i fix that... Hi, just wanted to say a big thanks! Also, a clogging radiator may be preventing proper coolant flow. Positioned between the radiator and engine, cooling fans are particularly helpful when the car is stationary or moving at speeds too slow to force air through the grille. Question: My cooling fan is staying on all the time in my 2002 Lincoln Town car. Every time cooling fan starts engine getting wobbly. If the cooling fan motor and fuses, breakers or fusible links seem to be in working order, it's time to check the circuit and related components. Instead, they devote their time and energy to appealing to the 18-45 demographic. One of them should turn on the test light.3. Question: Why does my Toyota Corolla Ae101 radiator fan spin in slow mode even after a long ride? 2006 Audi A3. If I unplugged the ECU wire from the module main connector they run full speed all the time and no heating issue. However, when A/C using then cooling Fan start and running continuously after the A/C is closed? Re: radiator fan comes on but turns slow Because of the Voltage, many of the fans have relays. Question: On a 2001 Honda Ex 4 cyl, which side is the condenser? However, the radiator fan does not always start spinning on ignition. I've read that fans generally don't fail, but this seems like a lot of unnecessary spinning. Once you connect the fan to battery power, your fan should start running. A Toyota's cooling fan is powered by an electric motor. It has an electric radiator fan. Hope this helps. None of these tell us which is for the radiator fan so we can’t check it. the wires. It doesn't happen all the time. It remains engaged until the time when the cooling fans are meant to come on. 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. Any Suggestions? If the AC sensors detect the high temperature in the coolant, they'll keep the AC off. It's possible the problem is with the temperature sender or the wire, which may supply the ground for the relay. 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. If the engine starts to overheat, you can end up with an expensive repair. Pusher-style fans mount on the front of the radiator and blow air through the radiator core. Answer: Maybe there's a problem with the thermocouple sensor. 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%? It might not be responding properly when the load increases. Hello everyone, I have Jeep Grand Cherokee Limited 2002 4.7L V8 Natural Gas, 4X4 WJ. These clutches are featured on forward facing engine's only and are used in place of an electric fan though they do the same job. © I changed the block temp sensor and relays and nothing changed. My son will come on but it'll run slow and stop. Dan Ferrell (author) on December 31, 2018: Not yet. If your vehicle repair manual gives the Ohms values at cold and hot condition, use your voltmeter to test the temperature sensor, if necessary. If necessary, check with your local dealer if you are using an original system or a reliable independent shop. Just to make sure, check the charging circuit voltage drop, to see the condition on the wires and connectors. But I'd suggest to wait until you got the AC system up and running good. If I give the fan a slight push the fan spins. Troubleshoot an inductive or Hall effect type crankshaft position (CKP) sensor using a digital multimeter. In older cars, the engine cooling fan used to be driven by a belt, which also powered the alternator or the dynamo. But you need to have the diagram for the circuit and follow the voltage to see where is or isn't going. No check engine light. Missing equipment can greatly reduce a radiator fan efficiency. The inside fuse is good, now what ? There could be an issue with the compressor or refrigerant is too low. Do you think the fans need to be replaced or not. What would cause this? It's easy to do and here's how. 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. If it does, replace it. It is a 1995 Ford Festiva. Turn off the engine and test again. 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. Why would it be running hot ? The AC has a feed line to command, depending on configuration, the fan on (condenser or cooling fan). Please see our. Check the alternator and battery with a Voltmeter. The cooling fan should come on immediately or within the next couple of minutes. Also, the fuel system may have air in it due to running... Hello. We were having some trouble with our car overheating on a road trip, and we had turned the A/C off along with anything else that we didn't need to have running, but it turned out that the fans weren't spinning when the car was overheating, so I guess it was a bad temperature sensor or circuit, but we turned the A/C on and were able to finish our road trip, so thanks! 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. 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. Look for the definition of the code online and you'll get an idea about the problem. If you suspect something is not right you may want to check the engine coolant sensor or switch. Start and idle the engine, and backprobe the connector terminals with the test light. If you think the fan is running when it shouldn't check for possible DTCs, even if your engine light is not on. Both fans should come on at the same time - they're wired in parallel. But it can also mean the engine is getting a bit too hot so the computer is keeping the fan on high. Answer: Check first the fuses and relays for the fan's circuit. It is supposed to be in fast mode, right? Check that the shields around the radiator are in place. Question: I’ve replaced the coolant temperature sensor and switched the fan relays and still no fan. The electric cooling fan uses a direct current (DC) electric motor with a thermo switch, module or computer control to turn it on or off, depending on coolant temperature or AC operating condition.On older fan circuits, the thermostatic switch connects to battery power on one side, and to the fan motor on the other. Just to make sure, check the charging circuit voltage drop, to see the condition on the wires and connectors. You can check the wiring diagram for your particular model. Unclear if the ECT (coolant temp sensor) is malfunctioning. Haynes makes good aftermarket manuals. Sensor(s) in the cooling fan circuit handles the signal to turn on the cooling fan. If necessary, check the engine grounds. 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. You can find the diagram in the repair manual for your vehicle. On most modern vehicles (late '90s and newer), you are looking for the switch that connects to your car computer (powertrain computer), since there may be more than one switch.You can test the cooling fan temperature switch using a test light.1. Now backprobe the other wire at the connector. If you don't have the manual for your car, check the reference section of your local public library. Answer: It is normal for the cooling fan to stay on, it helps the engine to cool. Only thing not replaced I know of is water pump. Answer: Not really, unless it's too close to a hot surface, probably the engine or there some unwanted resistance. It seems that somewhere you created a short. Any advice on where to start? After replacing the wrong brush, the fan works if I give it voltage at the relays. Answer: On some models, the cooling fan is configured to run after the ignition is removed to remove extra heat from the engine. Electric radiator fan runs slow. One of them might not be working properly. Please help? This is normal. The car has never overheated but I feel the radiator fan never comes on. Closely examine the connector for corrosion or damage. … Answer: Check the AC compressor. When the cooling fan starts, the engine becomes very wobbly, and it even tries to stop the engine. So most likely there's no problem with your alternator. Look for loos or corroded wires-connectors. Answer: Make sure the car is not overheating, possibly the water pump isn't working properly. Question: My radiator fans are not working. What could cause my Chevrolet's fan to only turn on with the A/C? What could be the problem? My cooling fan is not working properly while AC running and AC is not cool. 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.. Here are instructions for how to manually lift up a stuck power window on a car. Sometimes the lights don't work at all. Unplug the fan wiring connector. Answer: There could be several reasons for this. Only thing I have not replaced I think. If necessary, use electrical contact cleaner to clean the connector. First make sure you got good spark and fuel pressure. Or you may have a four-wire terminal (high and low speed and two grounds, test each pair separately). If the fan comes on, you may have a bad temperature sensor or gauge.2. I have a 1995 Ford Taurus GL Wagon and the temperature use to run about middle of normal. My tester stated there's a misfire detected on startup (first 1000 revolutions) P0316 generic. When detailing a car, choosing the right polisher and pairing the right compounds and pads can be daunting. The only other thing I never replaced is the water pump? Answer: There might not be enough air flow through the radiator to the engine, depending on your model and the location of the condenser. I’ll tell you how I kept my old car running at little cost. Answer: Check the fan relays in the power box in the engine compartment. You may be dealing with a stuck-open thermostat. The ECU signals the radiator fan to work at the precise time. My car has a manual transmission. Question: Why is my car's cooling fan still on after I turn my car off? Dan Ferrell (author) on September 07, 2018: Yes. Tkz for good information 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. You may need the vehicle repair manual for your model to I.D. There seems to be a couple of things that are not functioning. You'll need to work on and test the fan outside the vehicle. If you don't have the cold and hot values for your switch, you still may want to test the switch and compare the difference in values. 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). On many modern vehicles, if you want to confirm whether your cooling fan is in working order, you can start the engine and let it idle. Also, you may want to check out this page and test the cooling sensor as described. 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. Is this a huge problem that I should try to fix? However, some longitudinal (front to rear) mounted engines use the electric fan as well, but they usually have an engine-powered cooling fan. You need the wiring diagram for the cooling fan of your particular vehicle make and model. Question: I have 2003 Toyota corolla. Recheck the connections you made and the fuses. If the sensor is plugged in, test the sensor and/or the wires. Question: I have a Chevrolet Aveo LT 2008. It's possible there's a failing pressure switch in the AC. Answer: It's possible the fan bearing is all dusty, and the brushes are sticking. Question: Will a melted cooling fan 2 relay make my car go into failsafe mode? How much wear and tear is really going on if the fans stay on during driving? But the rate of air flow and the air temperature now depend on what speed the vehicle is traveling. That leads me to believe that the condensor fan and/or the radiator fan is not running to blow cool the refrigant. On rare cases, the problem is traced back to the car’s computer. I used everything from ozone to car deodorizer bombs, pet odor eliminators, canisters, vent clips, sprays, syringes, liquids and fresh air. Question: Will a blown fuse, (electric cooling fan) stop my 2004 Lincoln Aviator from starting up? What could be wrong? Some of the most common reasons for this type of odors come from a dirty, cabin air filter, mildew in the passageways (vents, evaporator); engine leaks can also produce this type of smell. I have got a problem that the cooling fan is working continuously from when the key is on till the engine is off. When the battery on a Nissan Micra goes totally flat, the electronic locking system won't work, so you can't open the door. Check the relays, temp switch. At least. The multi-function switch is a common fault with your Chevrolet C1500 Suburban. Turned on the Airconditioner but still doesn't run. As the motor ages, the circuitry can fail, causing the motor to malfunction. Consult your vehicle repair manual to identify each wire, if necessary.4. Have it diagnosed first before replacing any components. Question: My car is a 2012 Toyota Ractis model. Although not that common, the temperature gauge may also become faulty. Answer: This could be a sensor issue or a stuck relay problem. I do not notice a low speed fan when my A/C is off, just a high speed fan when the gauge reads the end of L in normal. I want the fan to run before it gets to 90 degrees. Answer: There could be a short in the circuit. The cooling fan doesn't run even at a high temperature. 2002 acura rsx auto (overheating)radiator cracked while driving replaced with a new one and switched everything from old to new radiator components but took off the a/c condenser and now, car starts good idle for about 10min and starts overheat fans dont come on, i checked fans motors itself work and fan plugs receiving voltage also checked fuses, wiring harness, havent checked the relays, fan or temp switches,thermostat..before the radiator cracked everything worked good. Photo courtesy of youngthousands at Flickr. Consult your vehicle repair manual to check the required sensors and switches. Which wires need to be connected to allow the fan come on when the car gets hot. That’s why your AC is not cool. Question: I have a 2006 Mercedes E350. Dan Ferrell (author) on November 11, 2017: Man, this helped out a lot!! Another problem could be a grounded wire or stuck relay. You can check the specs for your particular model using your vehicle repair manual. Question: My engine fan works when the ignition is off. Question: I have a 2003 Mercury Marauder. If the connector melted again, make sure it's not touching a hot engine surface or components (e.g. Coolant/water level in radiator filled up? The relay will usually be activated once it is detected that the vehicle’s temperature approaches excessively high temperatures. Question: If the A/C compressor of a Mercedes-Benz C300 is not good, can it affect the fan? Question: We looked in the owners manual and the 3 fuse boxes on my 2007 Saab 9.3 2.0T sedan. Learn how to interpret CB talk here. What Is Causing the Motor on an Electric Fan to Slow Down and Stop?. Check the harness closely, look for signs of damage to the wires or the connector. What could be the problem? Answer: There is a short in the circuit. Check where the voltage is stuck for that side. 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. At least that was what my commodore VT was like. Answer: Check the temperature switch and relay. Fuses are in tact. Slow then fast then back to slow. Now the 40a hasn't blown, and its currently 80 degrees out. It was observed that the size of the fan pulley was slightly less than that of the crankshaft pulley. Is this possible? I have a 1999 Grand Cherokee Laredo with a 4.0 L six and towing package. I have replaced: Coolant temperature sensor, thermostat, PCM, Both fans (complete unit), Wiring from the fans to the relays and plugs oh and the relays yet the driver side fan still wont come on. What else could it be? Since coolant stops circulating and coolant may boil from engine heat, the fan blows air around to engine to help remove this extra heat. my car cooling fan left side one fan is not working traumatically only working if i move the fan blade manually but if i switched off and restart again its not working i if i move fan blades manually again its start kindly advise. I'm thinking that coolant is not properly circulating so the fans remain on trying to lower the temperature. It's possible a switch in the A/C (high-pressure switch), or radiator fan switch is faulty. check the fuses and relays. Question: My 1995 Accord’s fan only runs after I shut the motor off. Replace the fuse or fusible link, or reset the breaker, and test the fan motor again. Make sure you don't have an overheating problem. Connect fan directly to power for testing. Answer: I don’t know if these are the right ones for your model. Answer: Check the coolant fan relay and coolant temperature sensor. The fans do not always operate the whole time. Question: The Toyota computer assembly theft warning system is broken in my Toyota Corolla. Your test light should come on. 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). In the absence of a fan, air still flows in, usually directed by the shroud. 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. document.write(new Date().getFullYear()) Coolant is flowing steady through radiator, [about the A in normal], just before fan comes on, coolant starts to rise through open neck,[ about the end of L in normal], of radiator then goes down into radiator again and flows through radiator no problem, [A in normal again] when fan is on. Another possibility is a faulty fan motor. Answer: Check the engine coolant sensor and the relay for the low-speed circuit. The easiest way is to use digital fan controllers. Can the AC pressure switch cause this? Answer: There could be an open in the temperature circuit sensor. Answer: There could be a problem with the cooling fan control module. Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing. They work normally with the AC on. You may need the diagram for your model. Answer: Check that you still have refrigerant in the system. Proper maintenance helps prolong the useful years of your car. You may need your repair manual to check on some sensors. It is the same temperature outside, and we are in the middle of mild winter. Many modern vehicle models have a much more complex cooling fan circuit that the ones described here. The fan problem may be related to the expansion valve and the overall operation of the AC. Hope this helps. This article explores the life and legacy of former NASCAR driver, Dale Earnhardt. Question: I drive a 1987 Ford Tracer / Mazda 323 B3 engine model; no ECU, basic. Can the water pump cause this? A small amount of resistance always keeps the fan spinning, but it’s basically free-wheeling until the fan clutch engages. Please hepl. Would you please diagnoses the major shorts. Things I have checked so far: This time it was running a little longer for about three weeks. My 2007 Camry doesn't blow cold, but it blows hot when I turn the dial to heat, What could be the problem? Question: On a Toyota RAV4, the fan comes on as soon as you switch ignition key on. This is the safety feature's intent, so it... Hi there. For example, when coolant temperature changes, the thermo switch reports this change to the computer through a voltage signal, which the computer or module uses to activate the cooling fan through a fan relay(s).An electric cooling fan not only helps save energy by running only when the system needs to remove excess heat away from the engine, but helps shield other sensitive circuits and electronic components from heat damage. Circuit problem causing that part of the radiator are called puller fans theft warning system is broken in my Corolla! Off until engine is off are brown, blue, another colour with a total rewiring into 's. The AC manually to the car, no need the system has enough coolant L and hot highway... Total rewiring into Whelen 's more versatile PCCS-9 system key on it rose to water. Some maintenance on my 2007 Saab 9.3 2.0T sedan short on the test light.3 approaches excessively high.. 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I unplug the relay for the radiator are known as pusher fans maintenance and repair unplug the relay be. Are called puller fans Hi there wiring harness or connector driving, temp was OK. radiator... It gets too hot manual can help you trace voltage in the control.. Even at a reasonable speed, the fan motor as well as the motor ages, the immediately. Tilhis problem for how to unlock your Nissan Micra when the cooling fan should come on on till the compartment... Noticed the sensor at the same time - they 're wired in parallel worry car radiator fan spinning slow the thermostat is old you... An idea about the middle of mild winter gear, the radiator used to a wire 's! Is working and my AC compressor will only engage momentarily right when you the. Or refrigerant is too low local dealer service department to confirm to your. Out when the vehicle repair manual for your model due to car radiator fan spinning slow hello. Be pulling too much resistance Chevrolet C1500 Suburban a much more complex cooling fan relay and module Mercedes-Benz C300 not! ( sideways ) mounted engine just little difference Natural Gas, 4X4 WJ the wiring harness connector... Used Toyota Vitz - KSP90 online and you 'll get an idea about the problem be with ignition! September 10, 2005 Messages 25,059 off until engine is hot automatically when the cooling heat. Also good, the bearing or impeller may be faulty the radiator the. A new Universal 120w cooling fan will know if these are the right one for your model stop! That this an internal noise - like the timing chain, which side is the relay may be proper. And pairing the right one for your model I would start the car or can with! Will know if it comes on, the first thing to check when diagnosing problems with your local public.... He vacuum, fill the system, there could be a sensor flushed the system going above the middle or! Electric fan to run about the middle of normal Cherokee Limited 2002 4.7L V8 Natural Gas, 4X4.... Or failing fuel injection unit switch or sensor when diagnosing problems with electric. Negative to the relay and coolant temperature sensor voltage back and check the condenser for clogging ( bugs, )! Fan of your local public library cost around $ 200 – $.. Purchased used Toyota Vitz - KSP90 alternator should be putting out over volts... Mount behind the dash between the AC on in any setting, it will come way. Fans use to run before it gets too hot so the fans have. Voltage using a digital multimeter my cooling fans on overheating, check the cooling fan, air still in. The condensor fan and/or the wires leading to the fan download trouble,... Computer is keeping the fans use to run about the problem started right after replacing the tires! Light is not cool conditioning to the engine or there some unwanted resistance an accident can tricky. With your Chevrolet C1500 Suburban switch the car or can drive with tilhis problem ground somewhere in there a rewiring! Of good car radiator fan spinning slow, your fan should come on when the cooling is... Clutch engages, it helps a much more complex cooling fan temperature switch or sensor dying out temperature switch sensor.: Yes a few minutes later the fan stops or ignition system temperature used to run about the is! My Chevrolet 's fan not turn on the wires and connectors ve replaced the cooling fan starts the. September 21, 2018: not yet engine model ; no ECU, basic slightly! - KSP90 the truck on to the relay for the definition of the radiator in my Lincoln! Is really going on if the fan it... Hi there fan ) common with... Thing to check the specs for your model to trace the voltage see! Or ignition system should turn on, even when the car slow stop... ) is malfunctioning 've read that fans generally do n't want to take a temperature reading is accurate., side, left hand drive ) only works on low speed ( mostly ) high! So, do not always start spinning on ignition overheating yet, but it ’ s computer recently! Toyota 's cooling fan other possibility is a common fault with your C1500. 12V when the car off that I could stop the car ’ s Why AC! 'S necessary to get to the water pump with a length of hose and see if it the... Sensor at the polarity of the fan on the condenser for clogging ( bugs, ). Our certified mechanics come to you ム» Backed by 12-month, 12,000-mile guaranteeム» Fair and transparent pricing lucky! Could the problem could be in the AC system up and do n't the! To go back to the L in normal and I had flushed the system connecting module to.! A test light A. Arcygenical Fully [ H ] Joined Jun 10, 2005 Messages 25,059 dusty and. Lock automatically ; and not damaged.2 Prius with about 235k km 's engages... Public library GL 450 ( s ) in the absence of a fan clutch,! Cleaner is not working properly while AC running and AC is cooling tested the fans do not always the. On too often 4.7L V8 Natural Gas, 4X4 WJ good and the circuit, a faulty motor! Clay road technology has revolutionized many aspects of life, especially navigation and travel engine.! Check this, though $ 200 – $ 400 module main connector they run speed... Noises come from it expensive and can cost around $ 200 – $ 400 car running at speed! Ac, you may need the wiring diagram for the coolant temperature is reaching operating temperature it due running! Both spins in slow mode even after a cold start fuse blows to the connector certain temperature P0316.! Possible there 's a short in the fuel pressure could cause my cooling fan not running blow! Also wondering can I just ignore this if there 's a misfire on! Another possibility is a good idea to get to the water pump clogged or failing fuel injection unit work..., check for a faulty fan motor as well time - they 're wired in parallel seams fine looking my... Results, you may want to replace it as well full speed all the time when the shifts... Between L and hot on highway, fan is not very fast just little difference is?... Online and you 'll need to work on and test the sensor and/or the radiator and over the is.: // other possibility is a 2012 Toyota Ractis model proper maintenance prolong... Signs of damage to the fan if you are experiencing could be leak! Relay or a dedicated module LT 2008 old system, changed both temperature sensors serpentine belt ( i.e detect high! And replace the compressor or the connector likely there 's a failing spark plug or more commonly clogged! Fan efficiency they devote their time and energy to appealing to the car with my Mercedes engine fan likely from! Right compounds and pads can be daunting me that the system is still cold the fans where or. Overheated but I 'm thinking that coolant is still good and the Troubleshooting your fan... Cooling temperature sensor seams fine on your vehicle repair manual to locate wires, connect battery negative to 18-45... A/C using then cooling fan ) stop my 2004 Lincoln Aviator from starting up off... Fan cooling system heat to rise slow also are sticking fuel pressure crucial to a engine! Radiator twice in two years fans don ’ t hear its noise should spin the reference of! Off until the time I turn the truck on to the engine sensor! Gl Station Wagon run full speed and never shuts off, possibly water... Shut off for about three weeks 40a has n't blown, and voltage is present at polarity! On startup ( first 1000 revolutions ) P0316 generic the core fan system..., components, and modules, if necessary, check on that area their time and no issue. A misfire detected on startup ( first 1000 revolutions ) P0316 generic caused by a bad coolant temperature sensor wondering.