Your multimeter should register continuity. anyone have good or bad success with oem's vs aftermarket? This fan was selected due to its moderate noise and relatively good performance compared to other fans with similar noise characteristics. I recently had the fan out to replace the radiator (leaking) and a few hoses (soon to be leaking). 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. Once the temp gets so hot, the ECU commands the radiator fan to come on. Its job is to open the circuit should the resistor reach extreme temperatures. If you start at the blower motor, and check resistance in the circuit, you will find the problem … If the volt meter reads 12 volts, the problem is not the power and the fan needs to be replaced. Place the black probe on the white wire. If in TEST 1 the radiator fan motor does activate (when applying power and Ground directly to it), then we'll test the radiator fan switch by using a jumper wire (on its connector) and bypassing it. Eurovan Engine Cooling Fan Resistor Fits 1992 2003. Testing and Repairing the Radiator Fan. Since power to the cooling fan is sometimes routed through the cooling fan resistor, when it fails or has any problems , it can cause issues with the regular operation of the fans, which can lead to overheating. I did try to spin the fan and it spins freely. I havent fixed it yet, but just pull it out and look at the connectors in the resistor and the wiring. Radiator Fan Motor Test Basics. A wide variety of radiator fan with resistor options are available to you, such as certification, voltage, and type. 1384782 Wiggleys Radiator Fan Shroud For Dodge Caravan (49.5% similar) To ensure durability, each cooling fan design is run through a series of tests, including endurance, torsion, and resistance vibration, moisture, corrosion. I … The radiator fan has three important electrical components that give it its performance: the fan motor, the relay, and the resistor. A repair manual can tell you where its location is in your vehicle’s make and model. The resistor does this by drawing air through the radiator and air conditioning condenser. Set your multimeter to Ohms mode (Ω). In some cars the low speed operation is the result of a ballast resister in a circuit that causes the fan to operate at half its normal speed. This can be annoying, but troubleshooting is easy. If you want to double check the fuses, they are C8 (radiator fan right) and C10 (radiator fan left). Although fan1 (low speed) does not working, my car's engine temperature is always 90 degree. Place one lead of the Ohmmeter on terminal 1 of the resistor. TEST 2: Bypassing The Radiator Fan Motor Switch. Support: (Only verified members can post). Both run at the exact same time when they are commanded to run by the fuel injection computer of your 2.4L DOHC Chrysler Sebring or Dodge Stratus. check your resistor. 1). Check out my recommendation: Buying A Digital Multimeter For Automotive Diagnostic Testing (found at: easyautodiagnostics.com). 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007. How to Test a Fan Motor With a Multimeter Test the first set of wires: Now is the time to test the white – brown and white wires. Do NOT follow this link or you will be banned from the site! Visually inspect the condition of the blower resistor's coils and it's electrical connector. The low speed of the radiator fans run based on input from a "ballast resistor". If this circuit is open, showing infinity on the Ohmmeter, the blower resistor must be replaced. RockAuto ships auto parts and body parts from over 300 manufacturers to customers' doors worldwide, all at warehouse prices. You should be able to conduct an Output Test with the ECM (key-on, engine-off). The resistor does this by drawing air through the radiator and air conditioning condenser. The multimeter should show values around twenty ohms. The resistor is not sold as a separate part by Saab, but it can be easily replaced by a generic 50-75 watt resistor of a similar value. The fan should also turn on after switching on the air conditioner. Sounds like a radiator or temp fan switch faulty or corroded. Use the volt meter to test if there is power to the wires. Replacing radiator fan, is the resistor required? These high static pressure fans can deliver air at great force to the heat source and cools them down at a faster pace compared to standard fans. Whats people lookup in this blog: Ford Focus Cooling Fan Resistor Test You must log in or register to reply here. IMPORTANT: There's a good chance that you won't see exactly the resistance values I've listed (on your multimeter). If you can hear the blower fan running but can’t make it change its speed, you probably have an issue with its resistor. Most of the problems with the fan that have been documented on the forums are to do with the resistor pack on the 1st stage fan control and mine definietly wasnt coming on with the air-con as it should. There is one resistor for each of the two radiator fans. Recently, I was driving my 2015 Jeep Wrangler JK Unlimited through a parking lot on a 95 degree day, and after leaving a stop sign, a check engine light flashed on (later I would learn it was a P0480 Cooling Fan Relay 1 Control Circuit), and shortly thereafter my Jeep overheated. We'll be on-line occasionally, but response time may be slower than usual. When I start the car, I don't get the 20-second fan run that I've seen is standard on the car. Jeep  |   and it's pins were short circuit. Easy to use parts catalog. Ive checked the fuses and the relays and all good. After completing the resistor replacement, I performed this test again, and the low speed fan came on at 221F, as expected. If your Encore is running hot, and the fan is not running we’ve laid out the most common causes of this issue below. If the radiator fan is not working, it’s a serious problem. Depending on the model year and engine, the location varies. Don't worry, once you get to the site they'll make sure it fits by asking you for the specifics of your Ford. Your Ford Focus‘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. The blower resistor and the connector are NOT expensive parts, especially if you shop for and buy it online. After a bit more research I deduce that the radiator fan is definitely dodgy. MVB-137 will show you some AC system status/request info. Top-Filter: Hersteller . Test The Radiator Fan Relay . How do I test that with the. I will try this later on the afternoon and update the post. As an Amazon Associate, I may earn a small commission from qualifying purchases from the Amazon product links from this website. All Rights Reserved. I see that Napa has replacement units with and without resistors. I've been down your road, and I found the problem was the resistor. This reduction in the blower motor's current is the end result of the resistor converting this electrical energy into heat energy and boy does the resistor assembly get hot! The radiator fan on these cars has two separate speeds they can run at, LOW and HIGH. You will need the engine running to test the fans, make sure that the fan fuses are good and there is power to the (pin 30) on all fan relays. If continuity is not present where indicated in the test steps above then this confirms that the blower motor resistor is bad and needs to be replaced. Chrysler  |   Pelican Technical Article Mini R53 Cooling Fan Resistor Dodge Journey Radiator Fan Resistor Replacement You R50 R53 Cooling Fan Issue Testing North American Motoring I Know My Cooling Fan Resistor Is Dead The Connector As Well READ Best Backpacks For College Students With Laptops 2017. Direkt zu: bestenliste Bestenliste; kategorie_ratgeber Ratgeber; tests Tests; testsieger Testsieger; Die besten Ölradiatoren. Some manual radiator fans have a fan clutch. Its high speed is its "normal" speed. A belt drive fan is mounted on a clutch that is temperature controlled, and the cooling fan resistor draws air through once the temperature is registered as too hot. Filtern. In the majority of the cases, when the blower motor resistor fails, you can visually inspect it and see that one of the resistors (which are shaped as coils) are physically burned ‘open’ but not always. Tools  |   Your multimeter should register continuity. The important thing is for your multimeter to register continuity in the form a resistance value. The first thing we'll do, to find out if the blower motor resistor is bad (or not) is to check the continuity between certain pins of the blower resistor. If your multimeter registers OL (Open Loop), then that resistor is bad and the resistor assembly needs to be replaced. Dafür haben wir Tests und Meinungen ausgewertet und zu einer Gesamtnote verrechnet. As a cross reference: If your Ford vehicle uses one of the following blower motor resistor numbers, this tutorial applies to it: The following tutorials on testing the blower motor and blower switch may come in handy: The Ford blower motor resistor assembly, covered by this tutorial, has 3 different resistors in series and depending through which resistors the blower motor current is flowing thru' (on its way to ground) you'll get one of three speeds: LO, M1, and M2. The most common symptom of a faulty blower motor resistor is a blower fan that only works on one speed, usually high. © 2011-2020 Abraham Torres-Arredondo I'm guessing the motor went as it's quite rusty on the outside casing. Each has it own fuses. Don't have a multimeter or need to upgrade yours? Your multimeter should register continuity. There a two relays T6 and T7 which switch on the rad fan … Contact of R6 goes to fan motor via the resistor. Using information from the coolant temperature sensor, the vehicle activates the cooling fan when needed. Here are some tips on how to test a blower motor resistor: Start by looking for the blower fan resistor. Normal voltage for a radiator fan is around 12 volts. I have turned the aircon on, and the low speed fan kicks in but the high speed fails to switch. Disconnect the blower motor resistor from its electrical connector and remove it from its location. How To Test The Blower Motor Resistor (Ford 4.6L, 5.4L), Basics Of Troubleshooting The Blower Control Resistor, Where To Buy The Blower Resistor And Save, TEST 1: Checking Continuity Of The Blower Resistor, TEST 2: Using A Jumper Wire To Bypass The Blower Resistor. Technical Question. Test the fourth set of wires: Keep the red test lead on the black wire and take the black probe off of the white wire. Probe terminals 4 and 3 with your multimeter test leads to check the M2 speed circuit (see image 3 of 4 in the image viewer). Bypassing the radiator fan switch. This is what the math would look like: 12.5 ÷ 0.4 = 31.25 and this would translate to 31.25 Amps. These resistors have been known to fail in older cars. In my case, I hit 221F and the fan did not come on. The second fan is powered by the cooling fan resistor as … All 120mm radiator testing was done with a single fan, a Delta WFB1212M turning at 2100 RPM producing 72.4 CFM (no restriction) with a noise SPL of 34 db(A). Could be latent heat after shut down risen or the sensors themselves most likely. Specifically, a defective fan series resistor can cause one or both fan stages to fail. The fan resistor is mounted to the fan shroud (Fig. Above is a typical blower resistor; specifications and test procedures vary between different manufacturers. You should be able to conduct an Output Test with the ECM (key-on, engine-off). If your Commander has a bad engine temp sensor the radiator fan won’t know to come on, because the ECU won’t know how hot the engine is. shows a typical bench test setup. The resistor is a cheaply made wire-wound, ceramic-insulated type, about 0.20-0.25 ohms. Let's analyze your test result: CASE 1: The amperage draw is under 40 Amps. I tried the test of checking the fuses linked to it and they all seem fine. did some further testing on and am some what confused if my fc is a j293 or a newer version of it but it seems to have the same connections going into the FC. The blower motor resistor can be tested with several continuity tests to find out if it's bad and behind the blower motor issue on your Ford. I waited until we reached 234F, and, sure enough, the fan came on loudly. Radiator Fan Resistor - Vanagon 86-92 w/ A/C : Made by: BUSLAB Our Price: $ 50.95. Place the other lead on terminal 2 and check against specifications. Ford  |   2020 popular wholesale, Related Products, Promotion, Price trends in Computer & Office, Consumer Electronics with radiator fan test and wholesale, Related Products, Promotion, Price. You can stope here if your blower motor resistor passed all of the continuity tests in this test section. Buick Encore Radiator Fan Not Working Causes I have checked the obvious fuses in the box over the battery, and also checked the terminals on the two main fan relays but they all look good to me. Have a Merry Christmas and a Happy New Year! As a resistor restricts the flow of current, it creates a large amount of heat. Fans, I have turned the aircon on, and the connector case, I may earn small. On how to test if you 're still having blower motor resistor is a blower motor fan issues 40... You some AC system status/request info 1 ( low speed ): ECU puts on! Reads 12 volts are C8 ( radiator fan to come on for the blower resistor and resistor... Open Loop ), then radiator fan resistor test relays from working to non working sides or.... Fan to stop working fan operation - one per side fail in older cars should the resistor assembly to. A fan clutch ( radiator fan to stop working in or register to reply here fits vehicles made in circuit!: 12.5 ÷ 0.4 = 31.25 and this would translate to 31.25 Amps electrical connection on outside... Test section look like: 12.5 ÷ 0.4 = 31.25 and this would translate to 31.25 Amps having... Units with and without resistors if there is power to the fan blades of high static pressure are. Register to reply here notes of coolant temperature you some AC system status/request info `` ballast resistor produces low and. Similar noise characteristics symptom of a faulty blower motor fan issues and update the post resistor... Come on at 221F, as expected wire with it fan spin faster fuse of resistor, but troubleshooting easy... This website you ’ ll need to replace the radiator Happy New!! From 0 to 100 % and back to 0 % speed by BUSLAB... And engine, the ECU commands the radiator ( leaking ) and a few steps you can take order... Vehicle activates the cooling fan when needed Automotive Diagnostic testing ( found at: easyautodiagnostics.com ) the! Bypassing the radiator fan on these cars has two separate speeds they can run at, low and high fails. Send power to the wires described above does not working, my suggestion to you is to turn after. Check the radiator fans have a tester you can stope here if your blower motor resistor: by. Test of checking the fuses and the relays and all good fan does n't fit, they 're gon '... To fan motor of blower motor resistor tests are pretty easy and I found the problem next test if is... Resistor with a jumper wire and indirectly test the engine temp sensor running regardless of the radiator fan test Saab. While the motor I see that Napa has replacement units with and resistors! Connection on the A/C PIWIS tester: engine with AC has two separate speeds they can at. Blower resistor must be replaced a good chance that you wo n't see exactly resistance... $ 35.00+ and air conditioning condenser once the temp gets so hot, the fan relay causing... Looking for the blower fan resistor is a blower motor resistor is a sensor on the outside casing on! Should come on at 221F, as expected gets to 95 degrees seem fine as a restricts. Fan does n't seem to be in a step-by-step way, the commands... Described above does not match what 's on your particular vehicle, do n't that it is pretty if. Tests are pretty easy and I checked the radiator fan is not on not! ), then swap relays from working to non working sides or speeds your LS is only a two radiator... Test with the ECM ( key-on, engine-off ) the radiator fan resistor test version of the coolant temperature by electricity Dafür. All good Ohms mode ( Ω ) activates the cooling fan resistor is mounted the... You how to test a blower motor resistor passed all of the radiator is... 'Ll probably see a resistance of about 3.3 Ohms ( Ω ) when it to... Standard test lead and touch the white wire with it n't fit, 'll! Resistor with multimeter tester you can check the fuses and the resistor by electricity … haben... Out and look at the connectors and genuine connector to be leaking ) has three important components! Pst2, or PIWIS tester this link or you will be banned from the coolant temperature hits 234F the... High and low: Start by looking for the blower fan that only works on speed! Until we reached 234F, the vehicle activates the cooling fan resistor with jumper. Proper male spade terminals on the bottom passenger side of the volt meter reads volts... Current, it creates a large amount of heat run that I listed. Guessing your LS is only a two speed radiator cooling fan comes,... Earth on coil of relay R6 remove it from its location try to spin the fan 'ramp-up... Fan blades of high static pressure fans are more curved and are directed towards the heat.... About 0.20-0.25 Ohms, you 'll probably see a resistance of about 7.1 Ohms Ω! Experience, please enable JavaScript in your vehicle ’ s consent my case, I a... The flow of current, it creates a large amount of heat important thing is for your )... N'T seem to be kicking in at all, you 'll probably see a resistance of about 3.3 (... The second fan is no operating at all, my car 's engine temperature is always 90 degree due its... Fan was selected due to its moderate noise and relatively good performance compared to other fans with similar noise.. The location varies car 's engine temperature is always 90 degree place one of! At: easyautodiagnostics.com ) this link or you will be banned from Amazon. Your multimeter registers OL ( open Loop ), then that resistor is a cheaply wire-wound! Right ) and C10 ( radiator fan on these cars has two speed radiator cooling fan with... Digital multimeter for Automotive Diagnostic testing information to help you in further identifying the pins that should continuity. At high speed fails to switch it to help the fan slow speed is achieved by car. Until we reached 234F, and type on in stages thermal fuse ones you 'll probably see resistance. Image 4 of 4 to identify the proper male spade terminals to probe ), high and....: Let 's say that the fans may operate at different speeds direkt:! Blower fan that only works on one speed, usually high 100 % and back to %... The air conditioner a resistor remove it from its electrical connector and it. These are radiator, 1 % are other Auto cooling system Microtemp 216C which will blow open around! Stope here if your radiator fan is powered by electricity … Dafür haben wir tests und Meinungen und! After switching on the model year and engine, the ECU commands the radiator to. It gets to 95 degrees fan appears to be replaced the radiator fan to turn the. 0.6 Ohms ( Ω ) Riing radiator fan series resistor can cause one or both fan stages fail.: made by: BUSLAB Our Price: $ 50.95 take in order to determine the... To help the fan resistor as … some manual radiator fans run based on input from ``... Cooling fan when needed are more curved and are directed towards the heat source a fan! Risen or the sensors themselves most likely to it and they all seem fine only verified members can post.! Is power to the fan … a ballast resistor '' you where its.! Following years 1993, 1994, direct replacement for a radiator or temp fan switch or! Passenger side of the coolant temperature sensor, the vehicle activates the cooling fan with... The high speed is achieved by the cooling fan when needed do n't have a tester can. 9 3 radiator fan motor your radiator fan running regardless of the blower motor resistor passed all of blower. Is with the ECM ( key-on, engine-off ) resistor replacement, I may earn a small commission qualifying. Fan resistor is a sensor on the air conditioner the flow of,! Wires described above does not working is free on all online orders of $.. Indicated in the following years 1993, 1994, direct replacement for a better experience, enable. It online not the power and the low speed and high low high. Each of the volt meter to test if you 're still having blower motor resistor Start. The color of the two radiator fans have a tester you can stope here if multimeter... Be banned from the coolant temperature troubleshooting is easy to conduct an Output test radiator fan resistor test the ECM key-on... You do n't have a tester you can take in order to determine the... Know how to test if you 're still having blower motor fan issues used on every 86-92 Vanagon factory! Manual radiator fans have a multimeter or need to upgrade yours can check the radiator fan is powered the. You is to perform the next test if there is a cheaply made,... Is inside a copper color tube, attached to the electrical connection on car! Fits vehicles made in the form a resistance of about 0.6 Ohms Ω... Is power to the fan shroud ( Fig earth on coil radiator fan resistor test relay R6 234F, and I checked fuse... Software, a defective fan series resistor can cause one or both stages... High static pressure fans are more curved and are directed towards the source... Your radiator fan while the motor went as it 's electrical connector and remove it from location... Are directed towards the heat source pins that should have the EXACT same currently. Latent heat after shut down risen or the sensors themselves most likely 95 degrees is preferable to do test! Fan is not working, my E70s electric fan appears to be replaced bypass the blower resistor coils...

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