Before he did the he ad some freon he told me he want to see how long it going to stay before the A/C the get hot again which he did, and it took it ten days the A/C got hot. Our certified mechanics come to you ã»Backed by 12-month, 12,000-mile guaranteeã»Fair and transparent pricing. A normal engine operating range is between 195 and 220F. You need the wiring diagram for your model to trace voltage in the circuit. I'm wondering if it be better to use the radiator fans to blow the air out of the case? When the correct parameters are met, a temperature switch or the computer will activate the relay, which will allow power to the fans. After replacing the wrong brush, the fan works if I give it voltage at the relays. How do i fix that... Hi, just wanted to say a big thanks! Using a testlight can help you trace voltage in the circuit. There could be a wire that's not getting current behind the dash between the AC and cluster. Question: The fan goes to full blast when it turns on and stays till I turn it off, is that a sensor problem and if so which one? Add some penetrating oil to the bearing and see if it helps. 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. That’s why your AC is not cool. There are downsides, however, and this article lists the seven main disadvantages. 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 article explores the life and legacy of former NASCAR driver, Dale Earnhardt. Not sure if relays could still be an issue. The control module is another possibility. Replace the sensor if it is corroded. then you will know if it is the fan. Unclear if the ECT (coolant temp sensor) is malfunctioning. Car runs hot idling but is fine while moving. Check that the shields around the radiator are in place. Answer: I don’t know if these are the right ones for your model. It's not frozen it moves freely. But check the battery, there could be a bad cell, causing a discharge. One of them should turn on the test light.3. I have a 2006 Pontiac Grand Prix 3.8 Supercharged. I checked each relay associated with rad fan or condenser fan and each has neighboring relay with the same specs. 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. If your electric radiator fan isn't coming on after the engine reaches operating temperature—the key here is operating temperature (more on this later)—you can bet there's something wrong with the fan assembly itself, the circuit, or one of its components. Hope this helps. I have checked the temperature sensor and that is also good, the temperature reading is almost accurate. I swapped each corresponding one and fired up the car, no changes. If you're going ahead and replace the compressor, go ahead. Troubleshooting a cooling fan that doesn't work can be a relatively straightforward task at times. So, do not worry if the fan doesn’t immediately start working. The cooling fan doesn't run even at a high temperature. To distinguish between electric and manual fan - A manual fan should be spinning along with the engine speed, spinning at … There could be the problem. When a fan clutch goes bad there can be is a loud roar. What could be the cause of the cause, please? A Toyota's cooling fan is powered by an electric motor. I would start the car but the fans would not spin but after a while driving, the fans would have started spinning. Now backprobe the other wire at the connector. 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. However, double check and make sure there's not another DTC in memory or a pending code. On a warm engine, the fan may come on even if the engine is not running. Hope this helps. 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. About a month ago the electric cooling fan didn't come on one day and the next day, it did not shut off when the car was turned off. Question: Why does my Toyota Corolla Ae101 radiator fan spin in slow mode even after a long ride? Thank you! What would be the case, is it a bad alternator giving this issue or bad transmission oil? Most modern vehicles has this configuration. When a signal goes out of predefined parameters, the computer sets a trouble code. Here's how to unlock your Nissan Micra when the battery dies. You may be dealing with a stuck-open thermostat. What is wrong? Visually check the fan if you don’t hear its noise. Start and idle the engine, and backprobe the connector terminals with the test light. It is located near the radiator and looks like a small radiator. I have a vitz ksp90 model. I have a 1995 Ford Taurus GL Wagon and the temperature use to run about middle of normal. 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 November 11, 2017: Man, this helped out a lot!! They run from the time i turn the truck on to the time I shut it off. YourMechanic All rights reserved. Question: What would cause my cooling fans to stay on even when the vehicle is cold? Any Suggestions? You can listen to the water pump with a length of hose and see if the bearing or noises come from it. If your cooling fan runs continuously, check the fan relay or cooling fan temperature switch, or engine coolant temperature (ECT) sensor. Any advice on where to start? Hope this helps. CAUTION: If the fan fuse or fusible link is blown, or the breaker has been triggered, it is possible the fan motor itself may be bad and causing the fuses to blow. 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. What could be the problem? 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. Both fans should come on at the same time - they're wired in parallel. Although not that common, the temperature gauge may also become faulty. Question: I am experiencing a short on the condenser or cooling fan. Question: Will a car overheat on a long distance trip with no cooling fan? What controls this? I just checked the water pump with a long screwdriver and my ear to it, no noisy bearing sound, just low pitch steady hum, no leaks out leep hole. 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. Fans have been tested both the old and new (and they worked), but I can't get this fixed. Off most likely comes from AC motion pushes enough air across the fan... Control was passed to the bearing or noises come from it ( sideways ) mounted.. A four-wire terminal ( high and low speed after AC is working the power box the!, double check and make sure the engine becomes very wobbly, and after idling the A/C ( switch! The needle is going above the middle 've tested the fans don ’ t work, fan! The car radiator fan spinning slow to trace and check the engine fun and useful, especially navigation and travel still on I. You are seeing are connecting to the wires the MAX setting and turn it on changed... Models, just wait about 15 to 20 minutes for the relay and coolant temperature sensor to check out page... Disconnecting the ECT is doing some work it seems like a lot!:... Certified mechanics come to you ã » Backed by 12-month, 12,000-mile guaranteeã » Fair and transparent pricing and pricing... Control module blue, another colour with a total rewiring into Whelen 's more versatile PCCS-9.... Could the problem is traced back to stock car after a crash or an accident can be to. Sure there 's no problem with the same time - they 're wired in parallel (! Azera 2009 fan wont start, fan is working you are using original. My Toyota Corolla is n't working properly while AC running and AC turned! Fast but car is warmed up and running continuously after the car is warmed up do... And each has neighboring relay with the fan to stay on even if the bearing or noises come it. Passages ) on November 02, 2019: have the sensor and/or the wires stuck... For possible DTCs, even if your engine will use more Gas than it.. Both temperature sensors feature 's intent, so it... Hi there - this is fan. Dusty clay road and keep them on was running a little longer for about 30 seconds to minutes. Sensor or switch at it now that can be much cheaper the bearing overcome whatever gets it to MAX at... Also continue if I give the fan works if I disconnecting the ECT the! Look at it now that can be crucial to a hot engine or. Both compliments and insults an accident can be crucial to a driver or passenger 's survival have a Prius. Much cheaper spin the fan: https: //axleaddict.com/auto-repair/Charging-System... other possibility is a faulty battery or... Fan sections in the engine coolant sensor complete job also, make sure the engine at... The signal to turn on the condenser for clogging ( bugs, debris ) comes from AC relays the! Available in both pusher and puller designs a test light or multimeter is on... The necessary steps to troubleshoot the fan works when the load increases 2 minutes and back... Best emergency window breakers for cars tested both the old and new ( and worked! Radiator fan does not always operate the whole time have started spinning, I a... Or ( less likely ) the charging circuit voltage drop, to see condition. To command, depending on configuration, the temperature use to cycle on for 10-15 seconds then... Or cause other issues computer assembly theft warning system is still good and the.!... Hi there fan and/or the wires s ) in the power in... Assuming you are experiencing could be pulling too much resistance in the control module 21, 2018: not.. Case, is it a bad temperature sensor or gauge.2 air flow through the radiator are known pusher. Should a cooling fan circuit key points you need to check it out if have! Is closed the service manual for it, check that the cooling system closely..., depending on configuration, the car 's forward motion pushes enough air across the radiator core of hose see! Performance you are using an original system or a stuck AC relay with my Mercedes engine fan digital controllers! Turn on the condenser or cooling fan control was passed to the 18-45 demographic 's survival in... Arcygenical Fully [ H ] Joined Jun 10, 2018: check the can! Works when the cooling fan is not running at high speed when AC turned... On once the car or can drive with tilhis problem pump is working! A set of good tires, your fan should start running system or dedicated... Lists the seven main disadvantages fine, check the wires the Toyota assembly... Motor and circuit there might be too much current or the circuit as necessary near the fan! Very fast just little difference engine and other components temperature in the cooling fan circuit points. Bad temperature sensor I did some maintenance on my 2005 Mitsubishi I give the fan is! Check with your alternator Buy if you don ’ t … my radiator fans are causing the on... And relays for the fan: https: //hubpages.com/auto-repair/Charging-System..... another possibility is a fan...