I believe this was due to me turning on the AC and not noticing the temperature rise up. In addition, your mechanic would charge you $120 to $200 for labour cost depending on the make and model of your car. You can try disconnecting the wires from and reconnecting them to the sensor, odds are that itâll work. Touch the red probe to any of the two contacts and take the reading. If not, simply fill it up to the mark and youâll be good to go. 1)The radiator fan was not turning 2) The AC also began to cycle on and off erractically. Set the multimeterâs meter to â20â in the DCV section as you will be testing 12V circuits. I have not actually checked voltage here when it is working I just know that it is not a circuit that works consistently. 8 Cars That Look Expensive but are Actually Cheap to Buy. Fortunately for you, the average cost of a radiator fan is not very expensive. Especially during the summer, the condenser fan is hard at work pulling heat out of the engine cooling system and air conditioning system, but if something isn’t working right, you could be left with abnormal noises, engine surging or misfiring, overheating engine and … Sometimes about 20 minutes after driving the van, the cooled air becomes warm (outside temp). Since the cooling fan motors work in tandem with the fan blades to pull air through the radiator, the blades will then not be able to spin or cause any airflow to cool off the car. Only one of the fans is working (drivers side) the other fan is not working at all, It's not ceased up and will spin freely. However, as a fast test, you can check with a multimeter if there is coming power to the radiator fan. Hi, I’m Magnus, the owner and the writer of Mechanic Base. This is, in fact one of the handiest maintenance tips that help you keep the engine as well as the cooling/heating system in great shape. Because the radiator fan is often drawing so much power, there is often a relay that is powering the coolant fan. Ensure that the wires are firmly attached and are not damaged. When your radiator fans are not coming on, it can also be caused by faulty radiator fans. There is a sensor on the bottom passenger side of the radiator. If engine operating temperature, or A/C operation, is such that the fan (s) should be powered on and yet they do not work, the first check is typically for power to the fan (s). . I asked because my AC is not working and I can't prove to the dealership that it is not. No need to worry about recording the precise voltage reading because it varies due to several factors including the alternator output and the. Is it a Good Idea to Clean Your Carâs Engine Bay? You are likely to find this sensor in the thermostat cover. He owns a car repair shop at downtown Osaka, and he put all that experience to good use in his sharing posts. i have power @ both relays and when i jumper the relays fans turn on. You will be able to locate the fan relay under the hood. I changed the fan switch, still wasn't working, switched the two fan relays, didn't fix the problem, changed the coolant temp sensor, Nada. Your email address will not be published. The engine runs your car by generating combustion inside the combustion chamber, and along with it also a large amount of friction. Here is a more detailed list of the most common causes of a radiator fan not coming on. Working as part of the engine cooling system alongside coolant, a radiator fan blows cool air through the radiator as a means of heat transfer to prevent the engine from overheating. I have to leave the AC on in order to get the radiator fans to run. Learn How To Fix Turn Signal Blinking Fast With 3 Simple Steps. Either your fan control is integrated into the engine control unit or you have a separate fan control module. Question: My aux fan is not working, how should I fix it? If the car is old, there is a possibility that electrical connectors and terminals are damaged and the fasteners are broken.
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