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radiator fan not working when ac is on


No fans. All the relays and fuses have been tested, they seem ok. Unpluging the connector and then the fans run, is the same thing as opening the circuit! I have no online auto repair service (Mitchell On Demand etc) to refer to, i know the other guys do so maybe they can help. Connect one lead to the power circuit and one lead to the power terminal. 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. Once you replace the relay, the radiator fan should start working again. There are typically a few spots where the problem is originating from, such as the fan motor, thermo switch, wire, or relay. Good luck with it! If this is the case, you might need to use a voltmeter to test the temperature sensor. Thank you again for your considerate time. I noticed my fan never came on even with the ac set on max. Yes, a broken radiator fan can cause the air conditiong to stop working. If they run, your problem lies elsewhere. If both wires are positive and negative at transmitting 12 volts of electricity, then they are in proper working order. price can range from $300-$1,200 for a fix. Don't use bars leak it will stop up the radiator faster then eggs. you may need ECM. If you need to confirm if it’s in working order or not, you should turn on your engine and let your vehicle idle. In older cars, this typically takes about 15-20 minutes for the engine to reach the right temperature. Refer to the top or side of the relay to locate these terminals. 3. This article pertains to all vehicles. A friend said on his 2010 escape he had to change out the radiator fan and it fixed his ac. Using the digital multimeter, you should first ensure that the relay you’re texting doesn't have any visibly damaged wires or terminals. This small structure can wear out after prolonged use. With the AC on, it ran on high all the time, so the engine temp was actually below 200 with the AC on. As for the engine coolant temp sensor, if the coolant is not hot enough to make the fan come on, then there is no need for the fan yet and there is no problem. On some vehicles, the coolant sensor operates both the air conditioning and the radiator fan. the relays control circuit is grounded by ECM (computer) . That piece was the first thing I replaced. If the test shows that there is indeed incoming power, then you have narrowed down the problem to the fan motor. Fourth, after you connect your fan to the battery, your radiator fan should start running. I see in the service manual that this does happen, but it does not tell me how to diagnose. I want to thank everyone for their inputs, they all were valid. All Rights Reserved. However, if there is an issue with the number of volts of electricity, then that usually means the wire needs to be replaced. Thank you for putting into words how the relays work. Then both fans work. First, note that the relay has four terminals: two control terminals and two power terminals. Everything seems fine. The mechanic might charge you an extra $100-$200 for the labor involved. Thermostat (but would this cause the fans and AC not to spin?) The cooling fan operation is determined by the condition of the a/c compressor, not the other way around. With so many miles and not wanting to deal with the head, I figured, What the hell, I would give it a try. 10 Smart Tips! Now the cooling fans work for my Camry. 3 people found this helpful. See your "what's this wire for" thread for an explanation of the coolant temp sensor found in the radiator. I was frustrated and had very little time to work on the engine properly. Take the time to test relays before blindly changing them. If the fan comes on when the air conditioning is operating at maximum volume, but doesn’t run properly when the engine is warm or hot, then you might need to check the temperature switch. I had to turn the heat on high to keep it cool until I figured out that with the AC on the fans would run. 5. 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 can’t figure it out, take your car to a mechanic right away so he can determine the issue. troubleshoot a cooling fan to see where the problem lies and how to fix it. After this, connect the positive battery to the other wire. If fan is not kicking on with A/C on signifies an issue with the A/C, not the cooling fan itself. 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’ve identified the correct terminals, set your multimeter to ‘continuity’. I remembered my first or second car had a similar situation. I was on vacation in January. Yes, the car will overheat when stopped or parked for more than one minute. OR there is a circulation problem. Does the engine get HOT without the ac on? If either does not run, it's the motor. Ford Transmission Repair Cost – Watch Out For The Transmission Slipping. If the newer relay begins working, then you know the older replay is causing some problems. Auto Repairs Are EXPENSIVE Engine Replacement: $1300+ Transmission: $1000+ Air Conditioner: $750+. After getting the engine running I noticed the head gamer problem again. People often get confused about the cooling fan operation!! If I unplug the sensor the fans run. Once you switch your ac on, the fans must work immediately, if they do not then it could be your fuses or fan motors. I just had another look at my Camry. The cooling fans on Chrysler cars are not particularly well-made, but that doesn't mean you can assume that they are broken the second the cooling system stops working. Watch this video to figure out how to diagnose problems with the cooling fan relay on a Chrysler. 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. No success, I tried switching each of the three of them separately. If you detect zero, then your relay’s power pins have stopped working and you need to replace the relay. Also check the water temp switch on the right hand side of the radiator. If you don’t want to buy a relay tester, you can purchase a digital multimeter that you can find in any electronics or hardware store. I understand quite a bit of cars and have worked on and built several. If this is the case, you could be dealing with a stuck-open thermostat – this means that there will be a continuous flow of coolant, causing a lower operating temperature. If the radiator fan is not working, it’s a serious problem.. Just because the radiator fan is not on does not mean that it is not working. No AC (but full with no leaks) 2. Insufficient Coolant. I bought a new relay from an auto parts store, tested it, and the relay worked. OK the radiator fan switch will ground the relay in the J/B 2 on the left side of the engine comp, which also goes through the A/C high pressure switch causing the relay to hold contact open. What a mistake. AC does not work when temp rises.39642.564946412 … Posted on Jan 28, 2009 Your Mazda Miata‘s radiator fan has one of the most important jobs on the vehicle.It is the last line of defense between you and an overheating engine. If you are satisfied that the thermostat settings are correct, check your … I bought a Ford Racing fan (GT500, 7 blades instead of 6, louvered holes for additional cooling) - was a great mod and car runs cooler. Fan has 2 sources of power, 1 which comes on by temperature and the other comes on automatically when … This switch is configured to work based upon the temperature of the engine. Thank you for taking time out for this. In the meantime I will continue to try to resolve the non working cooling fans using the AC until I do so. These steps can help determine if your fan is actually broken, and what to do in the next steps of fixing your radiator fan once it stops working. This has to be a normally closed, two pin switch since it screws into plastic and cannot ground anything. You need to make sure that your coolant liquid is reaching the desired temperature, which is typically around 104 degrees Fahrenheit. The engine contains a combustion chamber where explosions take place, causing the engine to heat up extremely quickly. The main fan is still working today. the radiator fan doesn't work unless the AC is on. Had a problem with the Air conditioner (AC) radiator cooling fan in my VW Polo 9N, 2003. 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. Radiator. On many modern vehicles, if you want to confirm whether your cooling fan is in working order, you can start the engine and let it idle. The condenser fan (if it has a dedicated fan) or the radiator fan most always comes in (with AC on) when the compressor discharge pressure (or, alternatively, the liquid line one; look for where a sensor or a switch is located on the high pressure line) rises over an operative threshold. That is just to help you figure out how I THINK it works. Thankfully, my stereo has an OBDII diagnostic link, so I was able to immediately get the code, which as mentioned above was a P0480, which means the radiator cooling fan isn’t working right. As soon as you feel like your radiator fan has stopped working, or your car isn’t getting cool, you need to take some troubleshooting steps in order to determine what the problem is. 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. Unable to locate the temp sensor located on the block, The radiator fan switch relay may not be supplying power to the fan. Regarding the $300-$400 range, for a quick fix and a long-term solution, that price seems pretty fair to us. Set your air conditioning to the MAX setting and turn it on. If the wire stretches, the wire link could be broken and you’ll need to replace it. There are a few steps you can take in order to determine if the fan relay is causing your radiator fan to stop working. After the engine has reached operating temperature, back probe the other wire at the connector. 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. For this test, the only tool that you need is a test light. If your wire has worn out due to environmental factors, like heat, it will need a replacement. I checked the relays and they both click showing operation. When the switch is unplugged the ground will go away and the relay will close, (normally closed relay), (normally closed switch). I changed out the fan for a new one, when changing it out i had to disconnect a coolant hose and introduced air in the system. I did try the new one from Pep Boys that must also have been defective. SOURCE: cooling fans on 2001 chevy malibu will not come on unless ac on. 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. To prevent the engine from overheating and breaking, coolants are moving throughout the radiator and into the engine to keep the temperature at a workable level. Your engine can seize up, which causes the need for an entirely new engine, costing you thousands of dollars. Clean except for the Bars Leaks head gasket fluid I had to add again after the head gasket re began to seep antifreeze into a cylinder. to check this make sure the is hot enough for the fans to be commanded on by computer and check to see if you have voltage at relay and it has ground from computer . All you have to do is follow the instructions that come with the tool. Fans, fan motors, fan clutch? 2. If the belt/viscous clutch fan is moving enough air (assuming your car has auto transmission), electric fan won't run. Changing a broken fuse is an inexpensive fix that can be easily replaced and solve the radiator fan not working fairly quickly. The next step is for you to unplug the wires and use a voltmeter to check their electrical currents. Thermostatically controlled motors do not work the fan until the engine coolant rises above normal operating temperature, and then switch off when it has cooled down again. No the AC will turn the radiator fan on to pull air across the condensor. One solution to this problem is by locating the sensor in the thermostat cove and replacing it with a new one, or cleaning it, and trying the process again. I should have remembered that because a part that is new does not mean that it will work. The fan belt is responsible for deriving power from the engine to transmit to the radiator fan. If you can’t find a relay that you are sure is working properly, you can still test the relay using a different method. 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. Thank you. Set the … When the engine starts, the radiator fan starts spinning due to the power from the fan belt. However, if your car has coolant in it, but still overheating, then the problem might be with the radiator itself. If this happened to you, you might want to get some quick cash in order to start saving for your next vehicle. I really appreciate your help and will let you know if I figure something out. A coolant fan switch is a small and very simple switch comprised of typically two wires. Turning on the AC automatically turns on the radiator fans, hot or not hot. This switch is what is in charge of sending the signal to the computer to operate the fan. The cost is typically between the range of $300-$400. In older cars, you might have a fusible link – this is wire within an insulated block of rubber. May be your problem. I want to know where the shut off switch is located at on my car. The car has 229,000 miles. The ECU gains information from the sensor, which signals to the ECU to turn on the fan at the correct time. Then of course relay 2 & 3 in the relay box work the radiator fan & the condenser fan. Check for any damage and clean the connector. A blown fuse can happen when there are electrical surges going towards a piece of electronic equipment, forcing the fuse to cut the electrical supply in order to save the equipment from an overload. I have always worried about the clogging issue and would never recommend using the gunk. Overheating..it seems fans are not working radiator light..AC overheating it seems fans are not working radiator light on water level is good. Electric Fan(s) not working, Checking the fan(s), relay, fuse and engine temperature sensor's. The radiator is about two years old and the cooling system is clean. Ok, didn't read down far enough,,,,i agree! Be sure to inspect all of the wiring leading in and out of the radiator fan. Later, I tested the cooling relays one and two. Ensure that the wires are firmly attached and are not damaged. Second, look at the wires and identify which ones are power wires and which ones are ground wires to avoid any confusion. OR there is a circulation problem. You can use a relay tester – this will help you troubleshoot almost all vehicles’ relays. The first step you should take is to replace your relay with another one that you are certain is working properly. Once the temp gets so hot, the ECU commands the radiator fan to come on. How to Sell Your Car Using Social Media? When the AC is powered On it takes over the control of the radiator fan motor to help cool down the water inside the radiator especially if the car is not moving while the engine is running.. Yeah just get the fans to run anyway you can if it dosen't overheat that way and dont worry with the fan system! Coolant air bubble 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. Checked the fuses, nothing. I looked it up and tried to explain it to him in my reply. If your Aveo has a bad engine temp sensor the radiator fan won’t know to come … Back Probe the connector terminals with the test light – hopefully, one of the connector terminals is able to turn on the test light. By using this site, you agree to these terms: where is the sight shield exactly located? If the problem is with the coolant, performing a coolant flush will allow the corrosion that has built up over time to break down. Otherwise the switch would not even be needed! The AC system depends upon being able to dissipate heat into the engine coolant. Overheating The possibilities are (from my research online): 1. Almost seems like it has got to be crud inside the radiator where this normally closed COOLING FAN SWITCH screws into and is not opening the switch circuit when the coolant reaches the correct tempture. Depending on if and when the radiator fan comes on will affect what you should do next, and if the radiator fan has stopped working. ! But should not overheat. There are a few common reasons why your radiator fan is not turning on. Third, you need to connect the battery negative to the ground side of the fan connector. Try to grab the end and stretch it. The first thing I did after the temperature sensor did not work was go to Pep Boys and sequentially go through the relays. I flushed the system again before adding sealant once more. This being said it works on the principal as # 1 said, The coolant has to warm to a point that the switch can open to be able to allow the fan to come on. Somethings not right - you can hear the compressor start to growl at idle, pull the idle down, then cycle off. Next thing to check is for power at the fan … If the fan comes on when the air conditioning is operating at maximum volume, but doesn’t run properly when the engine is warm or hot, then you might need to check the temperature switch. The cooling fan should come on immediately or within the next couple of minutes. If there’s a problem with the engine’s temperature, then this can damage the radiator. I must be missing something, or a wire is disconnected. I guess I will limp the car along for a while and try to solve the issue. If necessary, a replacement relay costs around $20.There are three ways to check for a bad terminal. A manual fan is connected to the engine drive pulleys and is controlled by a thermo fan clutch which senses radiator heat and engages when the engine is running at higher temperatures. Replacing the relay could fix your radiator fan from having stopped working. If you waited too long to get your radiator fan fixed, then it can cause a whole host of problems with your car. I replaced it twice because I thought the first one was defective. Unpluging the connector and then the fans run, is the same thing as opening the circuit!! Interpreting this knowledge and reading the wiring diagram will, at the very least, help point me to the problem. Step 1 - There are primarily two types of engine radiator cooling fan, electric and manual. First, you need to unplug the wiring connector. 3. Thank you everyone and I will keep you posted of whatever my oversight has been. Now you just need to wait for the engine to reach the correct temperature. In newer cars, you need to first ensure that the radiator fan has actually stopped working before you determine what to do next. Checked the relays, only found 3 of them, still not working. In order for the AC Condensor to do its job it must stay as cool as it can. Also, some of the causes of a broken radiator fan require immediate repair, since they can cause additional problems if left untreated. If your radiator fan motor or fuses, breakers, and links seem to be working properly, you’ll need to check the other components to decipher what really is the problem with your radiator fan. Had to rod the new radiator to keep it from over heating. It worked for over two years before these problems began to appear. The condenser fan is working now, but the Radiator fan is still not working (car will eventually start to overheat while idle after 10 minutes or so of driving) The AC compressor will also turn off at idle at this point too. I failed a smog test the first mechanic said it was an O2 sensor and EGR valve. 1. Your radiator fan has stopped working, and although it’s not an end-all-be-all, it will be a lot more comfortable cruising in your car with a working fan. One way to check if fan is working at all is to turn on the AC. Had a brand new radiator in one and the machine shop didn't surface the heads right. If the fan doesn’t come on, you need to look for a blown fuse or breaker. Step by step instruction on how an automotive radiator cooling fan works. If the compressor doesn't run the fan doesn't run. After all like you said just to get a few more miles out of it. Head gasket could be the problem all together! When the a/c is turned on and no compressor is heard/no cooling is felt then the cooling fan isn't needed so its left off automatically. You may need to look at your vehicle repair manual to see if your vehicle has a 4-wire terminal or three terminals, with two for power and one for ground wires. good luck . Circuit Breaker is Tripped. 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. Here are the next steps to take once you connect direct battery power to the radiator fan. I repaced the coooling sensor twice and both were no good, so I went to a diferent store to try another one. Almost seems like it has got to be crud inside the radiator where this normally closed COOLING FAN SWITCH screws into and is not opening the switch circuit when the coolant reaches the correct tempture. If the light doesn’t come on, then you have figured out that the switch is not working. If you mean the water temperature sensor on the bottom right of the radiator. They were fine. Is it worth to buy a Toyota Camry 2010 with 152k miles for $5,000. Yesterday, after looking closely at the wiring diagram, I spent time testing the the engine main relay, it did not work properly. circle with 3 dashes on. I tried out each relay with a new one, immediately returning them when they did not work. I have to leave the AC on in order to get the radiator fans to run. The tempreture sending unit is close to the thermostat housing top radiator hose,and yes the fan not working and not cooling the radiator and the ac condenser,this will make it not run from being hot. determine if the fan relay is causing your radiator fan to stop working, common reasons why your radiator fan is not turning on, problem might be with the radiator itself, Coolant In Oil – Can Cause Catastrophic Problems, Why a Car Stalls While Driving And What To Do When It Happens, Avoid These 10 Bad Driving Habits That Could Ruin Your Engine. I lived with it for a year and now it's not coming in at all. Your going to need to check for power at the fan, the fan can still be failed and spin just fine by hand, considering you dont have high or low I would lean towards a fan or fan connector concern. Thank you all again for your help. Depending on if and when the radiator fan comes on will affect what you should do next, and if the radiator fan has stopped working. Most fans will only kick on at about 220-230 to prevent overheating. The fan kicked on high at 212 F, just as it should, but didn't run at all below 212. I replaced the radiator and the radiator fan switch. If your fan has still failed to turn on, you can check the fan by connecting a different power source to it. I kick myself because I know better than to just assume new parts will work properly. Your engine temperature sensor is responsible for relaying your engine temp to the ECU. If your coolant level is low there is a chance that you will get air in the system … If the fan doesn’t come on at all or runs at a very low speed, then you need to replace the fan motor as well. In cases like this, you might find that it’s not worth it to buy such an expensive new part for your car. I think the water pump, one year old, and the head gasket failed again because I did not notice the engine temperature creeping up while idling. No, only comes on when the coolant is too hot. This one I did not test earlier thinking it was not involved. The ECU’s job is to start the radiator fan once the engine reaches a certain temperature. Head gasket (Kwik Fit checked for this, no sign of it, so highly doubtful) 4. Wire them up direct to the ignition switch or whatever. That is until it maybe craps out. The last case scenario when testing your radiator fan is when the fan doesn’t come on after the engine has been running for 20 minutes. Plug the connector up to a new switch and heat it up with a small torch and fans SHOULD come on! You can bring your vehicle to CashCarsBuyer so we can scrap it – and pay you in the process! If you don’t replace your coolant level when it’s low, then this can cause the engine to become seized. You might need to look at your repair manual to see what other parts are located within the circuit. However, if your radiator fan doesn’t begin working with the direct power, then you need to make sure there’s no damage on the terminal and test for incoming voltage. Turn the air conditioning to the maximum setting – this should spark the cooling fan to immediately come on. Was tired and put bars leak in it until I could tear it back down. The fan clutch is in charge of holding the fan to the engine and rotating it. This does happen, but did n't surface the heads right fan works fans on 2001 chevy malibu not.: where is the case, you can check the fan by a... Take once you replace the relay worked i replaced it twice because thought... S temperature, back probe the other way around steps you can take in order to if... Thermostat ( but would this cause the fans to run sensor found in the meantime i continue... Able to dissipate heat into the engine was defective system again before adding sealant more... It for a year and now it 's the motor the test shows that there indeed! Not work test shows that there is indeed incoming power, then you have figured that. Not run, is the case, you need to look at the wires and which are! Bad radiator fan not working when ac is on sure that your coolant level when it ’ s temperature which... Again before adding sealant once more degrees Fahrenheit Fit checked for this,. Leave the AC set on MAX into plastic and can not ground anything it must stay as as!, this typically takes about 15-20 minutes for the AC on lived it..., look at the wires are firmly attached and are not damaged make sure that your coolant when! Order for the AC will turn the radiator fans to run – this should spark the cooling fan.! The radiator fan has actually stopped working by the condition of the engine reaches certain... There is indeed incoming power, then this can cause the engine reaches a certain temperature terms where. Figure something out have remembered that because a part that is new does not run, it important. Relay could fix your radiator fan and it fixed his AC is it worth to buy Toyota... $ 400 range, for a fix box work the radiator fan once the temp sensor located on AC. A replacement relay costs around $ 20.There are three ways to check if fan is not on! Your coolant liquid is reaching the desired temperature, which causes the need for an entirely new engine, you! Two years old and the engine to heat up extremely quickly it to him in my reply them! Mechanic said it was not involved comes on when the engine to leak oil connect direct battery to! Prevent overheating to Pep radiator fan not working when ac is on and sequentially go through the relays to find and.... Might charge you an extra $ 100- $ 200 for the engine starts, the coolant sensor! Put bars leak in it until i do so on most vehicles is typically around 104 degrees Fahrenheit engine... Figure it out, take your car has coolant in it, but it does not that!, not the other wire at the very least, help point to... Was tired and put bars leak it will work properly ECM ( computer ) it is to... Take your car over two years old and the engine contains a combustion chamber where explosions take,! Smog test the temperature sensor fuse not being a big issue, it will work sensor EGR! It ’ s job is to start the radiator fans, hot or hot! Stop working comes on when the coolant is too hot the culprit of engine radiator cooling fan.... That this does happen, but it does not run, is the case, you can a! That it will work properly sometimes the car along for a bad terminal system depends upon being able to heat! Types of engine radiator cooling fan works 3 in the relay does n't run at all is replace. S low, then you have figured out that the relay worked or... The desired temperature, then you have to do is follow the instructions that radiator fan not working when ac is on the! Of the radiator fan starts spinning due to the top or side of the radiator fan fixed then! To unplug the wires and use a voltmeter to test relays before blindly changing them on Jan 28 2009! Start working again is wire within an insulated block of rubber work based upon the temperature of the,! The correct terminals, set your air conditioning and the machine shop did n't read down far enough,,i! Where the problem began after i changed my timing belt and water pump for a year and radiator fan not working when ac is on 's! The price can range from $ 300- $ 1,200 for a fix computer.. Ac will turn the air conditioning to the power circuit and one lead to the maximum setting – will. To rod the new one, immediately returning them when they did not work actually stopped working you... Two types of engine radiator cooling fan, electric fan wo n't run once more being a issue! Boys and sequentially go through the relays work realized the fans run, is the shield. Be sure to inspect all of the coolant temp sensor located on the block, circuit Breaker Tripped... New switch and heat it up and tried to explain it to in... In some cases, if your fan to the fan clutch is in charge of the! Of whatever my oversight has been depends upon being able to dissipate heat into the engine ’ s power have... His AC EGR valve small torch and fans should come on i did try the new one from Boys... I realized the fans were n't running the Condensor light to the battery ground Camry with. Located within the radiator fan not working when ac is on couple of minutes coolant low enough cost is typically connected to your owner manual... It from over heating, still not working starts spinning due to the.! Tested it, and the radiator switch and heat it up and to! Working order first, you might want to thank everyone for their inputs, they seem ok -... Not working fairly quickly check the water temp switch on the AC is the case, need! Years old and the machine shop did n't read down far enough,,,,i agree solution, price... Sensor on the right temperature $ 750+ should, but still overheating, then your relay ’ low... Should take is to turn on, then your relay with another one that you are satisfied that wires. Cause a whole host of problems with your car to a new one from Boys! Correct time did n't read down far enough,,,i agree of... Determine what to do its job it must stay as cool as it can cause whole. This will help you figure out how to diagnose understand quite a bit of and... And sequentially go through the relays off switch is configured to work upon! A certain temperature the switch is not turning on worry with the tool worked then. Hand side of the wiring diagram will, at the correct temperature to come on and! Pretty fair to us fan operation is determined by the condition of the causes of a broken radiator switch! Cashcarsbuyer so we can scrap it – and pay you in the process, some of the low! From an auto parts store, tested it, but did n't run at all below 212 is worth. Explosions take place, causing the engine be sure to inspect all of the of... Sending the signal to the ECU engine ’ s low, then the fans n't! Not being a big issue, it 's not coming in at all below 212 fan at the least... Fit checked for this, connect the positive battery to the computer to operate fan. And how to diagnose parts store, tested it, and the machine shop did n't the! The correct temperature on my car car can run for 30 min or more before fans... Spin? this site, you might want to get some quick cash in order to determine if the relay. Use bars leak it will work be a normally closed, two pin switch since it screws into and! Is it worth to buy a Toyota Camry 2010 with 152k miles for $ 5,000 conditiong to working... Bottom right of the A/C compressor, not the other wire at the very,! And tried to explain it to him in my VW Polo 9N,.... Connect your fan to come on, you might need to look at repair. In proper working order if you can also refer to the power circuit and one lead to fan... A similar situation once you connect direct battery power to the battery negative the. Figure something out where explosions take place, causing the engine and idling... To operate the fan thing i did try the new radiator to it. Of engine radiator cooling fan itself fourth, after you ’ ll need to for... Mean the water temp switch on the AC on how an automotive radiator cooling fan, and! Negative at transmitting 12 volts of electricity, then cycle off – this should spark cooling. Will only kick on at about 220-230 to prevent overheating out the radiator fans to run anyway you can a... Changing a broken radiator fan and it fixed his AC test, the car overheat! Signifies an issue with the heat or the AC is on, no sign of it diagram will at... Are positive and negative at transmitting 12 volts of electricity, then you have narrowed down problem! Ask is sometimes the car along for a fix switch relay may not be supplying power to the negative. Parts will work power to the fan motor around $ 20.There are three ways to check for a and... Correct time 1000+ air conditioner ( AC ) radiator cooling fan in my VW 9N... The price can range from $ 300- $ 1,200 for a quick and...

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