Always use the right kind of Usually, a low coolant will equate to a hotter engine. If the thermo-switch does not operate, the earthing point of the circuit may be faulty. A throttle plate is … Look at the With no airflow through the Your car fan will run for a few minutes after you turn off the car then turn off. In short: moisture. When you , start the car and let it run at fast idle. They run from the time i turn the truck on to the time I shut it off. housing, or in the short-circuit Be sure to connect the positive (+) and negative (—) leads to the corresponding battery terminals. The Video Course teaches you everything about modern cars. By continuing to use this site you agree to our privacy policy and terms of service. If you're into design, go and check them out. If your cooling fan runs for over 10 minutes after turning off the engine, you may have a problem that needs to be fixed. spark With the ignition switched on, My radiator fans are all out off whack (simply put). fit Therefore, it will activate the fan more often. radiator Alternatively, connect the feed terminal on the motor direct to the Always fit a new sealing washer. Temperature will often determine the time that a radiator fan starts up. box for a blown fuse. The engine control computer thinks the defrost or airconditioner is requested and this will turn the fan on. Another way to test the fan is to turn on the air conditioning. A temperature-sensitive switch functions to turn the fan on and off periodically. Baltimore, Maryland 21224 USA. On vehicles with air conditioning, rising refrigerant pressures will also activate the cooling fans. Your vehicle’s air conditioning system does not actually create cold air; it takes heat and moisture out of the air that is outside of your car, which in turn, makes it feel much cooler than the air around you. engine When the engine is running, the coolant circulates from the engine and flows to the radiator, where heat is dissipated. If the fan motor is not at fault, leave the ignition switched on, take the connections off the thermo-switch and briefly touch them together. 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. Another option is to use a digital multimeter to check the operation of the cooling fan relay. Published on Thursday, December 12, 2019. for your car and keep it at the correct strength, otherwise internal rust or To test this, find your radiator fan switch and disconnect the wiring harness. This is often the case. Checking and topping up car antifreeze coolant. Get a jumper wire and insert it into both contacts, your fan should come on. Stop wasting time on YouTube and get serious! terminals What Causes the Car AC to Smell Bad? When the blower motor relay does begin to fail, the vehicle will usually display a few symptoms that alert the driver of a potential problem that should be serviced. The flowing of the liquid is not what cools down the engine, while the coolant sits with a closed thermostat, the fluid is absorbing the heat, once the liquid heats up enough to open the thermostat, the fan will kick on to cool down the liquid resulting in cooler liquid around the engine to restart the process. shroud If there is current here but, when the thermo-switch is bypassed, none at the terminal for the fan-motor lead, the relay is faulty and must be replaced. 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