I had purchased a T5 Lyric a few months ago and ha... Troubleshooting a Radiator Fan That Won'... Troubleshooting a Radiator Fan That Won't Start. Using the digital multimeter, you should first ensure that the relay you’re texting doesn't have any visibly damaged wires or terminals. If you have tried the aforementioned fixes and nothing has worked, then a fan clutch or fan belt could be the culprit. Ensure that the wires are firmly attached and are not damaged. The cooling fan motors work together with the cooling fan blades to pull air through the radiator. First, you need to unplug the wiring connector. suggestions. If this burns out or fails, you’ll need to replace it. Website operating Switched to the original exhaust etc. You can clean the sensor by checking out some auto body videos online, or consulting your local mechanic, and then seeing if the radiator fan works again after the cleaning is done. Despite a blown fuse not being a big issue, it is important to find and fix. 2-Fan also kicks on when MAF sensor is unplugged. Third, you need to connect the battery negative to the ground side of the fan connector. The next step is for you to unplug the wires and use a voltmeter to check their electrical currents. I've tried to bleed the air, but no air hisses out. If your fan has still failed to turn on, you can check the fan by connecting a different power source to it. submitted to our "DoItYourself.com Community Forums". For this test, the only tool that you need is a test light. This small structure can wear out after prolonged use. After this, connect the positive battery to the other wire. If the problem is with the coolant, performing a coolant flush will allow the corrosion that has built up over time to break down. Even though the radiator fan might work fine in these cases, the coolant is often not able to get rid of its heat energy fast enough. Questions of a Do It Yourself nature should be They run from the time i turn the truck on to the time I shut it off. There are springs within the fan clutch that can wear out or corrode over the years. All Rights Reserved. There will be two wires of positive and negative feed. There is a part in front of the radiator called the condenser - it is essentially a radiator for the air conditioner. The AC orifice tube / expansion device filters and regulates the … In older cars, you might have a fusible link – this is wire within an insulated block of rubber. We welcome your comments and If the motor fails the blades will not be able to spin or generate air flow. If you do need to replace the fan, make sure that the replacement has the right CFM rating for your vehicle. If you’re in the car and you feel as if the radiator fan isn’t working, even though it’s on, then the problem might lie within the coolant liquid. There are typically a few spots where the problem is originating from, such as the fan motor, thermo switch, wire, or relay. If you don’t have resistance values, but you are able to deduct that the Ohms values remain the same during cold and hot temperatures, you should replace the sensor in order to fix your radiator fan. Electric radiator-fan motors are switched on either by the ignition switch - and run while the engine is working - or by a thermostatic switch. After you have undergone all of the troubleshooting tips to decipher what part is causing your radiator fan to stop working, you need to figure out the correct diagnosis in order to figure out the part that needs replacing, or the part that needs repairing. The radiator fan on your car draws air in from the grille and over the radiator, where it cools the coolant in the radiator. Always make sure the coolant level is up near the maximum level to avoid possible overheating. Make sure the fuse for the radiator fan is intact. Engine overheating at low speed or when stopped is the most-common fan clutch failure symptom. There are a few steps you can take in order to determine if the fan relay is causing your radiator fan to stop working. If it is not, replace it immediately, and this should take care of the problem. Blower still does not work. Even if the wires appear to be in great working condition, you should still inspect the relay – the job of the relay is to supply electricity to the wires. The fan relay will be under the hood. Slow then fast then back to slow. To check it, disconnect the wires from the sensor and touch them together. The ECU’s job is to start the radiator fan once the engine reaches a certain temperature. If the engine is heating but the fan isn’t kicking in, check the fan wires. If the sensor isn’t working, your fan won’t come on because it won’t know that the temperature is hot enough to require activation, which can frequently lead to overheating. This switch is what is in charge of sending the signal to the computer to operate the fan. Second, you’ll need to identify which pins and terminals are part of the control circuit, and which ones are part of the power circuit. Looked everywhere and can't find anything about this. You may freely link Ford Focus Head Gasket Problems – You Could Pay Upwards of $4,000. In cases like this, you might find that it’s not worth it to buy such an expensive new part for your car. Once you replace the relay, the radiator fan should start working again. If there is not, you need to check both the wires and the fan relay to see if replacement is required. Step by step instruction on how an automotive radiator cooling fan works. Second, start the engine and start idling your vehicle. Check the coolant level in your engine. You might need to look at your repair manual to see what other parts are located within the circuit. If you prefer to do some of the work yourself, you can actually troubleshoot a cooling fan to see where the problem lies and how to fix it. Regarding the $300-$400 range, for a quick fix and a long-term solution, that price seems pretty fair to us. In the... My caravan overheats and when it does it won't produce heat. No check engine light. The job of the radiator is to keep the coolant at the right temperature so that when it travels back to the engine, it is able to take on more heat, and prevent the engine from getting too hot. Well I took a closer look and the radiator doesn't work, then fan isn't spinning, not on the racing nor on the normal one. The engine cooling fan has stopped working or the radiator’s cooling fins are clogged with debris so that the air flow that reduces the coolant temperature is restricted. Insufficient Coolant. If your coolant level is low there is a chance that you will get air in the system … Also, some of the causes of a broken radiator fan require immediate repair, since they can cause additional problems if left untreated. If you don’t … If the wire stretches, the wire link could be broken and you’ll need to replace it. The fan clutch is the assembly that holds the radiator fan to the engine and makes it turn. There are a few common reasons why your radiator fan is not turning on. How to Troubleshoot an Overheating Engin... How to Troubleshoot an Overheating Engine. In newer cars, you need to first ensure that the radiator fan has actually stopped working before you determine what to do next. If you don’t replace your coolant level when it’s low, then this can cause the engine to become seized. The sensor is usually located in the car thermostat cover. The ECU gains information from the sensor, which signals to the ECU to turn on the fan at the correct time. My radiator fans are all out off whack (simply put). If the radiator fan is not working correctly, your car can get damaged, and if you let it go too long without a repair, the fix can be thousands of dollars out of your pocket. If you see the engine heating but the radiator fan isn’t, the fan wires could be the culprit. If your coolant level is low, then it might not feel as if your car is getting cool, even with the radiator fan turned on and working. Usually located in the system … Dead wires vehicles ’ relays battery power to maximum. Fan once the engine to reach the correct temperature most rooms unplug the wires and fan! If so, a replacement fan costs upwards of $ 45 40 amp blower fuse it... Them together engine contains a combustion chamber where explosions take place, causing the engine to reach the CFM. Radiator and cool it down MH Sub i, LLC dba Internet Brands upwards... Way to do is follow the instructions that come with the cooling fan to! 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