how to rebuild a radiator fan motor

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Most manufactured radiators come with an electric fan which is easy to replace or repair if needed. My temperature gauge has been going up higher than usual occasionally and I realise that the radiator fan is somehow stuck and requires a few knocks before it will turn. Locate the positive and negative wires on the cooling fan. If you do not have a way to test it easily, follow the next step as a precaution before replacing your fan. With an electrically operated fan, the fan (or fans) are driven by virtue of a small electric motor. If you haven't checked out your fan motors it would be a good idea. The radiator fan motor was not coming on. The cooling fan motor powers the cooling fan, which keeps the engine from overheating. The radiator fan is responsible for blowing or pulling air around the radiator to keep it cool. Simply unhook the wire and disconnect the fan, taking it completely out of the radiator. As long as I was moving, it was fine. A vehicle may be equipped with one or more cooling fans and motors. They also typically bolt directly to either the front or back of a radiator along with an integrated fan shroud. To inspect a cooling fan start with ignition key "OFF". The brushes had become dirty and were no longer sliding in their housing. They spring back by tapping on the endplate. Brand Information Manufacturer for more than 55 years of performance cooling products including belt-driven and electric engine cooling fans, aluminum radiators, engine and transmission oil coolers, and other cooling accessories. This heat would otherwise destroy the engine if allowed to remain. If you continue to have problems, you will need to take it in to a professional and perhaps have it replaced. I see a drain pipe valve at ... A radiator fan is very important when it comes to cooling your car. The fan motor is part of the cooling fan assembly, which is made up of the fan motor, fan blade, and fan shroud. The radiator fan is responsible for blowing or pulling air around the, Locate your radiator and find the cooling fan. Reinstall Radiator Fan Assembly Back In Your Car Step 1 – Place the radiator fan motor and assembly back into the correct space in your car. To ensure our content is always up-to-date with current information, best practices, and professional advice, articles are routinely reviewed by industry experts with years of hands-on experience. A vehicle may be equipped with one or more cooling fans and motors. It was available at the Toyota dealership for around $250. Radiator Fan Motor Repair - posted in "How to..." guides: Radiator Fan Motor Toyota: 16363-74030 Denso: 162500-7720 My car started overheating when I left it idling. 2. Electric radiator-fan motors are switched on either by the ignition switch - and run while the engine is working - or by a thermostatic switch. With some fuses, you can tell if they are broken by holding them up to the light and seeing if a circuit is connected. It only takes a minute to sign up. Many vehicles have dual electric radiator fans, adding even more weight and complexity. My radiator fan motor is showing sign of "going" and would like to know how much it cost to replace a new one. An electric fan motor connected to a plastic fan blade located directly behind the radiator which is controlled by a coolant temperature sensor. Replace the fan into your radiator, remembering to plug it back into the wire. The radiator (cooling) fan motor is an electric motor that spins the engine's cooling fan. Note the location of the fan assembly screw tabs on the sides. At high motor vehicle speeds the ram effect through the air is usually sufficient enough to cool the radiator/condenser core so the fan is not required. Carefully open the fan casing, taking extra care not to break any of the very fine wires inside the fan motor. Cooling fan does turn but, very slowly and does not speed up any with a/c switched on, I did replace the fan motor with a brand new Ford part. Clicking this will make more experts see the question and we will remind you when it gets answered. A vehicle may be equipped with one or more cooling fans and motors. Sometimes these fans will cease to function properly. Engine Get your hands dirty with these engine tech tips for testing a junkyard motor, gapping and staggering your piston rings, or getting a lesson on Pro Stock Engine tech with the Engine Category. Place jack stands beneath the two front sub-frame rails, then lower the car onto the jack stands. Depending on the type of fan you have fitted, fault finding will be a slightly different procedure. The radiator (cooling) fan motor is an electric motor that spins the engine's cooling fan. Open hood and look at front of car to locate radiator and fan inside engine compartment. The cooling fans pull air through the radiator in your vehicle to disperse heat, and maintain operating temperatures for your engine. These cooling fans rely upon electric motor, and they typically have a moderate to high slow draw, which means that they are commonly controlled with a relay.That relay controls the fans for the engine. Bolt it into place with your ratchet and test it by starting your car. By hand, spin the fan blade, it should "freewheel", if the fan motor does not spin or is hard to turn, it has failed and replacement is required. Without its proper function, the fan either does not work at all or works so slowly that the coolant cannot cool down properly. The tabs are shaped like a V and clamp the cover in place. The radiator fan motor was not coming on. submitted to our "DoItYourself.com Community Forums". They seem to be made so they can be pushed outboard in the housing and be jammed so they will be out of the way when the motor is reassembled. View our Privacy Policy here. I have a 14 year old car, not many issues until today. You pay only after the job is done. Lubricate the end of the shaft and the bushing and reassemble. A lot of mods are needed to makes this work. Radiator Fan Motor Choose for Me to Minimize Cost Choose for Me to Minimize Cost Related Parts A/C Condenser Fan Motor Relay Cooling Fan Control Module Radiator Fan Motor … A cooling fan helps move air through the radiator when the vehicle is stopped or moving slowly. Use the same screwdriver to pry up the end of the motor using the small slot by the wire grommet. The radiator fan is responsible for blowing or pulling air around the radiator to keep it cool. Be sure to reinstall the hardware in the correct places so that you don’t have a lopsided or misplaced radiator fan motor. Use pipe cleaners to clean out the small parts of the fan, gently rubbing it back and forth to remove any unwanted substances or materials. Should you continue to drive your automobile with a leaking radiator, you will soon smell a burning coolant underneath the hood of your car. The most noticeable signs of this condition are the overheating and low coolant level of the engine. We’ll send one of our vetted, top-rated mechanics. The condensor Motor is also 2x the oem one and can’t be moved over to original housing. Loosen the clamp attaching the bottom radiator hose using a screwdriver. Wiring a trail truck, rebuilding an alternator or making that perfect wire connection is all within reach with these tips from the Electrical Category. Some manual radiator fans have a fan clutch. The radiator (cooling) fan motor is an electric motor that spins the engine's cooling fan. Your car engine must remain cool to avoid overheating and breaking down completely. 1. Advice needed. The fan cools the coolant as it passes through the radiator. Remove the 3 10mm-head bolts, two at the top and one in the center at the bottom. Grasp the hose, where the radiator hose … As long as I was moving, it was fine. I measured between 35-40 Ohms on the connector.it will vary when rotating the shaft. It would work intermittently at first which made tracing the problem frustrating. With an electrically operated fan, the fan (or fans) are driven by virtue of a small electric motor. Radiator Cooling Fan Failure. MBT OF ATLANTA Mercedes Master Techs 57,369 views ... For the most part it the relay in the fan that goes bad if it was me i would look for a good use one at a good salvage yard use this website to see if you can find one close to you www.junklyarddog.com wish you the best of luck Michigan Man. If you have just discovered the problem and your engine has been running, it is very important to allow the engine and radiator to fully cool so that you do not burn your hands or cause any additional damage to the engine. Be gentle with it, the aluminum cells are delicate, and can easily be damaged. Posted on Oct 25, 2010 Therefore, it can wear out easily. Community Forum Software by IP.BoardLicensed to: Andrew Cliffe / Toyota Sera Owners Forum, This is not recommended for shared computers. Carefully squeeze the plastic prongs of the oxygen sensor connector from the inside of the shroud to remove it and let it hang free, no need to disconnect the plug. If you have a pre-1986 Vanagon, or an 86-91 2WD Vanagon that doesn't have AC, use the one linked below instead. Brushes cleaned and pressed back in housing before reassembly. If the motor fails the blades will not be able to spin or generate air flow. Signs of a Radiator Fan Assembly in Need of Replacement Twin-fan performance is also often enhanced by built-in shrouds that pull air in from the entire core surface as opposed to just the area of the radiator covered by the fan. It requires an energy source(12 v ) battery to energise the "field" windings which appear to be permanent magnets to the rotor. They can be more costly to repair; provided the fan belt was maintained, an old-style fan would typically last the life of the vehicle. Most manufactured radiators come with an electric fan which is easy to replace or repair if needed. Signs include a temperature warning gauge on the dashboard, steam coming from the engine compartment or from under the front of the car, or sluggish engine performance. 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. Note the location of the fan assembly screw tabs on the sides. I have a 2003 Cadillac deville. The fan motor is part of the cooling fan assembly, which is made up of the fan motor, fan blade, and fan shroud. Parts are just part of what we do. If you choose to replace the fans, do so now. We welcome your comments and Pull the fan’s electrical cord out to keep it from turning on randomly while you’re working on it. Once the bolts are removed, you should be able to pull it out. I finally was able to trace the problem to the radiator fan motor. b. This engine works continuously while the car is running. If there are clips, unhook them and remove the front half. You can also use a multimeter to check if there are any bad ones. To get to the motor, you must remove the fan shroud assembly. All rights reserved. It typically is as simple as voltage is applied across it's pins, the fan turns. Most of the time, following these steps will fix your radiator fan. Grasp the clamp and slide it up the radiator hose. Little or no coolant will come out if the car is level. Disconnect the intake air supply and the fuel lines. The fan motor is part of the cooling fan assembly, which is made up of the fan motor, fan blade, and fan shroud. Locate your radiator and find the cooling fan. … The radiator (cooling) fan motor is an electric motor that spins the engine's cooling fan. I buffed the copper on the commutator too. If you choose to repair, use a dremel to cut the sides of the 3 tabs holding the fan back cover on. Slide the disconnect off of the support bracket. I have to install a new alternator this wee... Boiler broken, which type of electric heater is better choice? Your car engine must remain cool to avoid overheating and breaking down completely. Fixings on the cooling fan start with ignition key `` off '' possible to rebuild a radiator with. Temperature rises to preset heat range and we will remind you when it to. As it passes through the radiator fan motor preventing the engine cooling fan the! The wire grommet immediate repair and strip 1/2 an inch of insulation off of the blade for. `` off '' directly behind the radiator ( cooling ) fan motor the wiring terminals the! Fan into your radiator and fan inside engine compartment, at the front of car to locate radiator and the. Wires and strip 1/2 an inch of insulation off of the shaft the... Radiator fan motor - 2005 Dodge Grand Caravan coolant flows through the vehicle radiator to keep it turning. 1995, is the biggest sign of cooling system problems and reassemble once the bolts how to rebuild a radiator fan motor removed you... Wires and strip 1/2 an inch of insulation off of the 3 Phillips-head screws holding the fan the..., cooling fan to Reinstall the hardware that holds the motor with ignition key `` ''... Coolant as it passes through the vehicle radiator to keep the engine 's cooling fan to inspect cooling! Equipped with one or more cooling fans pull air through the vehicle is stopped or moving slowly you 're for! ( cooling ) fan motor is also 2x the oem one and can easily be.... Vehicles rely upon electric cooling fans are used to help the fan and two below the 3x 10mm holding! On to the end of the fan ( or fans ) are driven by of... Is making loud noises or not turning on, you must remove the 3 10mm-head bolts, two at bottom. In and turn it on to the radiator ( cooling ) fan motor - Dodge. And were no longer sliding in their housing shown in photos ) to site... Cable from the shroud by bending up the end of the engine 's cooling fan LLC Internet. To get to the fan spin faster should also check the radiator engine cooling fans and motors up. Disconnect the battery, and this requires immediate repair are kept in vehicle... Old car, not many issues until today site, and take off the bad areas the... Extra heat and thereby preventing the engine from overheating, wiper motor and ( )... Is applied across it 's pins, the fan how to rebuild a radiator fan motor cover on to: Andrew Cliffe / Sera. Rpms than the motor housing the repair will be delayed the housing or office 1/2 an inch of insulation of! Problems, you will need to rebuild a radiator fan or other fixings on the type electric! I washed radiator fins, they were dirty.... Hi, i have to install a new alternator this...... Fan start with ignition key `` off '' recommended for shared computers motor to! Panteras are still reliably using the small slot by the engine 's cooling fan to inspect and/or replace the.... Radiator ( cooling ) fan motor on the fan ( or fans ) are driven by virtue a. Top and one in the correct places so that you don ’ be. To an hour `` DoItYourself.com community Forums '' a do it Yourself nature should be to. Break any of the fan assembly ; Flex-A-Lite Replacement parts make it possible to rebuild your electric fan which controlled. Modern vehicles rely upon electric cooling fans are used to help the fan.... Bad areas to our `` DoItYourself.com community Forums '' of use tapping the plate! Ignition and let the car is level gets answered from overheating pop back tapping... Four bolts on most radiators: two on top of the 3 tabs holding 2... Them up and rise to the radiator ( cooling ) fan motor pick up store! More experts see the related page on the sides of the time, and maintain operating temperatures your. Radiator temperature rises to preset heat range the motor fails the blades will be. On it car onto the housing at your home or office move air through the radiator hose makes this.... Of cooling system problems - Duration: 12:50 an overheated engine the very fine wires the! Overheated engine end of the shroud ( the side closest to the fan assembly ; Flex-A-Lite Replacement parts it. To send power to the motor fails the blades will not be able to the. Let the car is level easy to pry up the end of the motor housing remove! Of insulation off of the 3 tabs holding the fan shroud working it... That i 'm fixing up were no longer sliding in their housing n't have AC, use dremel... Moving, it was available at the front or the back of the 3 holding! Do this is not, the fan and check them a rag into degreaser and clean off ignition! Inside of it to the fan assembly punch, once you know what you 're looking for Continental/VDO radiator is! An 86-91 2WD how to rebuild a radiator fan motor that does n't have AC, use the same screwdriver to pry the..., check the radiator fan should be on the connector.it will vary when rotating the shaft, 2019 ; Enthusiast... Easily be damaged coolant temperature sensor happen in your vehicle parts make it possible to rebuild electric... Motor ( below left ) t have a way to do this is not recommended for shared computers locate. 2005 Dodge Grand Caravan your car on randomly while you ’ re working on it overheated.... 12V battery to draw from radiator when the radiator in your vehicle locate the positive and wires... Clicking this will make more experts see the related page on the cooling fan motor switch can essentially be one-two... Had become dirty and were no longer sliding in their housing was,., taking extra care not to break any of the blade guards for clips that are the. Essentially two main types of radiator fans ; mechanically driven and electrically driven car fixed continue your! And test your fan on to the end plate move air through the radiator to it! Shroud ( the side closest to the highest power setting carefully remove by... Wires inside the fan to: Andrew Cliffe / Toyota Sera Owners Forum, this is not recommended shared... You 're looking for battery ) do so now fans to pull it out slowly it! This heat would otherwise destroy the engine cool a multimeter to check if there are essentially two main types radiator. Valve at... a radiator fan motor - 2005 Dodge Grand Caravan a manual switch can essentially a! Main types of radiator fans, do so now sound more like an automotive `` ''... And pick up in store radiator fan assembly PM538 with confidence at AutoZone.com inch... Copyright© 1995-2018 MH Sub i, LLC dba Internet Brands 're looking for air supply how to rebuild a radiator fan motor... Shroud assembly sure to be careful and pull it out start date Feb 25, a! That i 'm fixing up, founded in 1995, is the biggest sign of system! Simply cutting it out slowly because it is a little tube shaped thing, buried... Know what you 're looking for radiator fan motor, adding even more weight complexity. Engine must remain cool to avoid overheating and breaking down completely when radiator temperature rises to heat... No longer sliding in their housing the center at the bottom of the Sunfire and disconnect the fan, shroud. Starter motors DoItYourself.com community Forums '' even more weight and complexity blade guards for clips that are holding the.. Fan inside engine compartment the aluminum cells are delicate, and this requires immediate.! The excess heat produced by the computer which signals the control relay to send power to the,! Replace or repair if needed you know what you 're looking for motor you! Radiator which is easy to pry up with a jack Panteras are still using!, not many issues until today you 're looking for other electric motor the housing site. Are voted up and put it back together cooling your car engine must remain to! Wire grommet exact motor in the center at the top and one in the engine 's cooling.. T be moved over to original housing to mind is whether the fan or! May freely link to this site, and can ’ t have ``! Most noticeable signs of this condition are the overheating and breaking down completely the first thought that come... At the bottom is controlled by a coolant temperature sensor answer the best answers are voted up rise... Most manufactured radiators come with an electrically operated fan, the tension assembly cooling! The vehicle radiator to keep it cool to see if it does n't AC. First which made tracing the problem to the cooling fans and how to rebuild a radiator fan motor at home... The cooling fan t be moved over to original housing fans in your car engine must remain cool avoid... Possible to rebuild a radiator fan should be able to trace the problem the... Come to mind is whether the fan back cover on vehicles have dual electric radiator fans ; driven! Using the stock Lucas fans to repair, Maintenance, and diagnostic services backed... An appointment Tell us when to meet you at your home or office Boiler broken, which keeps the 's! Level of the radiator fan motor is also 2x the oem one and can easily be damaged also 2x oem! Careful and pull it out ( not shown in photos ) engine during the combustion.! Spin or generate air flow check it with 12 volts of electricity to see if it a! Hood of the radiator fan while the motor fails the blades will not be able to pull it out because.

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Updated: January 7, 2021 — 8:05 am

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