Using jumping wires, connect battery negative to the ground side of the fan connector and positive battery to the other wire. The cooling fan should come on immediately or within the next couple of minutes. Still runs hot, between L and Hot on highway, fan is coming on about the L. Comes on when A/C is on. Answer: In some cases, depending on the fault, it may prevent you from starting the engine or cause other issues. Any suggestions? Question: I am experiencing a short on the condenser or cooling fan. If the fan stops, replace the sensor. Recheck the connections you made and the fuses. Why would it be running hot ? I used everything from ozone to car deodorizer bombs, pet odor eliminators, canisters, vent clips, sprays, syringes, liquids and fresh air. This article explores the life and legacy of former NASCAR driver, Dale Earnhardt. Your test light should come on. 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. Only increases speed with AC on, but not very fast just little difference. Radiator fan running slow, car running hot. I've read that fans generally don't fail, but this seems like a lot of unnecessary spinning. This time it was running a little longer for about three weeks. The fan may run for several minutes. If I disconnect the ECT for a moment while the engine is still cold the fans go on. Check that the shields around the radiator are in place. Question: My aux fan is not working, how should I fix it? Also, you may want to check out this page and test the cooling sensor as described. Answer: Unplug the cooling temperature sensor. If necessary, use electrical contact cleaner to clean the connector. All these happened because I don't want to replace the evaporator. GPS technology has revolutionized many aspects of life, especially navigation and travel. If you find one, check on that area. It's not frozen it moves freely. When I turn on the AC on in any setting, it doesn't do anything. The battery is also dead. The chart shows that with two Vardar fans in a push setup, spinning at 1800 RPM, the EK-CoolStream XE 240 has a cooling power of 350W/10°C. 1) Its ok, but neednt cut in immediate also. I'm trying to troubleshoot and also wondering can I just ignore this if there are no other problems. Question: So when I get my 2008 GMC Acadia up to temp with AC running and when the cooling fan kicks into high, it blows my 30a fan 1 fuse. Answer: The fan coming on with the engine off is normal in modern vehicles. Answer: There is a short in the circuit. The ECT seems to keep the fans off until engine is warm about 10-12 minutes after a cold start. Answer: Not really, unless it's too close to a hot surface, probably the engine or there some unwanted resistance. Is this a huge problem that I should try to fix? Once you're under way at a reasonable speed, the car's forward motion pushes enough air across the radiator without the fan. Answer: Maybe there's a problem with the thermocouple sensor. Answer: Yes. However, double check and make sure there's not another DTC in memory or a pending code. Made with ♥ in Silicon Valley. But if you turn on the A/C, it will come on. Let's find out. Had the AC system checked. What Is Causing the Motor on an Electric Fan to Slow Down and Stop?. It is also possible that this an internal noise - like the timing chain, which is immediately behind... Hi there. Other times the high beams will work but not the low beams. Once you connect the fan to battery power, your fan should start running. Besides, the manual can help you locate sensors, relays, switches and trace circuit wires as necessary. Question: Why is my car's fan not running at high speed when AC is turned on? If it does, replace it. Sometimes it's necessary to get to the motor to do a more complete job. Answer: Check the coolant fan relay and coolant temperature sensor. A Toyota's cooling fan is powered by an electric motor. Just to make sure, check the charging circuit voltage drop, to see the condition on the wires and connectors. Any Suggestions? Have those points checked first. Why is this? 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. 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. Had hose replaced and now car running hot. Still nothing. Electric radiator fans are available in both pusher and puller designs. Fan did not move fast nor slow. 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. What could be the problem? I want the fan to run before it gets to 90 degrees. 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: Check the Troubleshooting Shortcuts and the Troubleshooting Your Cooling Fan sections in the post. On 2009 GMC with 5.3 L . Troubleshoot an inductive or Hall effect type crankshaft position (CKP) sensor using a digital multimeter. 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. Replace the fuse or fusible link, or reset the breaker, and test the fan motor again. That leads me to believe that the condensor fan and/or the radiator fan is not running to blow cool the refrigant. If you have a capable scanner, the circuit may be monitor to check the switches. There are no symptoms I'm noticing otherwise. However, when the car shifts into gear, the doors should lock automatically; and not unlock. CB lingo makes the radio more fun and useful, especially for truckers. Photo courtesy of Sfoskett~commonswiki on Wikipedia. Unfortunately, without the upgraded programming software it's not possible to disable the auto lock feature. Question: I have 2003 Toyota corolla. Question: My engine cuts out when the cooling fan turns on. 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. Try scanning for trouble codes, if necessary. Question: My engine fan works when the ignition is off. When ii started, this fuse issue, both fan 1 30a, and fan 2 40a were blown. I replaced the radiator about 3 months earlier. https://hubpages.com/auto-repair/Charging-System..... Another possibility is a faulty fan motor. I look at the top 3 best emergency window breakers for cars. Answer: Check the relays and the coolant temperature sensor. 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). There seems to be no power to the relay and module. If you don't have the sensor's resistance values but you notice that Ohms remains pretty much the same at cold and hot, replace the sensor. You can get free wiring and fusebox diagrams at Autozone.com after registering your vehicle. Asked by dilloneccdbe898 in Wiconisco, PA on . Switched to the original exhaust etc. I replaced the blower motor still nothing. 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