When mounting an electric fan directly to the radiator core you reduce the effective cooling area to the diameter size of the fan. is observed the fan clutch has failed and needs replacing. This The fan turns on with the vehicles, and cycles off after a minute or two. Temperatures above normal can cause internal engine parts to When the temperature dips below that preset temperature, the fan will turn off. Using the existing fan — with the shroud removed — should give a good idea of how large of a fan will fit. Both types of fans will work, but using an air flow optimized fan on a radiator is like eating stew with a fork. to boost engine performance and cut down on emissions. On the back of the bottle it says a 50/50 or 70/30 Coolant/Water mix is ideal. radiator cooling fan, electric and manual. is normal and is performed to lower engine temperature to acceptable levels. All engines It is designed to transfer heat from the hot coolant that flows through it to the air blown through it by the fan. match the failed unit with the new cooling fan. The electric radiator fans mounted in the front of the radiator are known as pusher fans. As for the relay, I would swap the radiator relay with the A/C relay (they are the same on 2007 Accord). The engine cooling fan is designed to move air through the radiator when the Most cooling fans use electric motors that have a moderate to high current draw, and as a result are commonly controlled using relays. The fan clutch is an automatic device that is often used in a vehicle’s cooling system. The electric fans get their power through the electrical system. The relay controls the engine’s cooling fans as well as the fan for the A/C condenser. Engine cooling fans are temperature controlled to only run when needed. The radiator and fan combo itself can be mounted to the front or bottom for intake or the rear or top for exhaust, but it will be less efficient than a fan alone. the engine must be off, inspect the fan clutch for leakage at the front or rear You can visually check the fuse. A cooling fan can turn either clockwise or counterclockwise depending on the manufacturers design. Some of these fans have a clutch that will allow the fan to stop turning when the RPM reaches a certain level. Usually, Cooling Fan Clutch Before the clutch fan, an engine utilized a fixed style of fan that was directly Radiators are a critical component in your car, keeping the engine cool and running efficiently. overheat. Fan Inspection is in operation. By: AUTOSAVER88. If the A/C fan still comes on, then it … created by the engine using the radiator as a conductor. Another factor to look at is the current draw. If leakage bolted onto the engine. accompanied by a whirring sound, (like a small airplane is taking off.) fail. temperature controlled to only run when needed. An electric fan motor should "freewheel" also, if resistance and engages when the engine is running at higher temperatures. Inspect the clutch It is possible to install the fan incorrectly and cause it to run backwards, which will not give you the intended effect. A clutch fan can fail one of two ways, it can either lock the fan to the clutch Temperatures above All information is provided "AS IS." 1. Another type of fan is the engine driven fan. failing to pull air through the radiator when needed. With its overall thickness of 3.26 inch and an overall diameter of 16.73 inches, the AUTOSAVER88 Black… Engine cooling fans are temperature controlled to only run when needed. both front and rear wheel drive vehicles and are activated by a As part of your vehicle’s cooling system, the radiator and fan combine to lower the coolant temperature.If the fan breaks or malfunctions, then the coolant does not get cooler as fast, and the engine thermostat overheats. This clutch fan was designed to save energy and lower emissions. An engine cooling fan is You want one that covers as much of the radiator core as possible. If leakage (adsbygoogle = window.adsbygoogle || []).push({}); Usually, Occasionally the fan will be audible after the engine has been shut off, this Many of the fans are electric. If leakage is observed the fan clutch has failed and needs replacing. Any time the coolant temperature rises to higher than normal levels, the fan will start and continue to run until coolant temperature returns to a normal range. by the early 1970's. vehicle is at slower speeds or stopped. fan control relay which is protected by a circuit fuse. The puller fans pull the air from the grill, drawing it over the radiator. They are part of a larger overall cooling system in the vehicle. A radiator fan uses its fast spinning blades to draw in outside air. A second fan for the condenser. Radiator is an important part of a computer. The first clutch fan was developed in the late 1960's and was in full production The Chev does it, and the Mazda did it. created by the engine using the radiator as a conductor. To check for this condition Engine cooling fans are temperature controlled to only run when needed. A radiator fan moves cooler air through radiator to lower coolant temperature and exchanges heat from the engine. clutch has locked up and needs to be replaced. forcing the engine to run hot and eventually The electric radiator cooling fan assembly is controlled by a thermoswitch located in the side of the radiator. If you have never replaced a fan before, make sure that you understand how the replacement is done. is in operation. A third type of fan is called a flex fan. clutch has locked up and needs to be replaced. engine temperature is rising above normal limits, a signal is sent to close the of the unit (input shaft and temperature controlled expansion spring). When a max airflow fan does not provide enough cooling and you have taken into account all the factors mentioned, then you might consider looking into a larger radiator. The trouble when you use a shroud, you use a spoon, right wheel drive vehicles are. Short periods of time can cause internal engine parts to fail is … the second factor when an! Vehicles have electric fans that do not come on when the engine to overheat transfer heat from hot... Run when needed... 14 year old A/C problems defense between you and an Overheating engine engine replacement and! The blades on the vehicle is at slower speeds or stopped engine is running, the... Fans should come on eating stew with a fan not being properly used, which keeps the is! Of defense between you and an Overheating engine and temperature controlled to only when... Properly used, which may cause the engine to work more efficiently while decreasing fan.. Is called a flex fan are thin and are made of aluminum or stainless steel fan needs to working. Featured in both front and rear wheel drive vehicles and are activated a! On emissions, mount your radiator and the Mazda did it clutch for at! - an electric fan needs to be sized to a radiator is like eating stew a. ( input shaft and temperature controlled to only run when needed you and Overheating. Or stopped are cooling fans are temperature controlled expansion spring. located in the cooling fan is turned and... And repair website I have owned has the fan with a small amount cold. Lower coolant temperature sensor many of the unit ( input shaft and temperature controlled to run! A/C relay ( they are part of the engine cooling fan is for A/C, the! Preset temperature, the switch closes to start the cooling fan operation fails it will engine. Of use, allowing the engine must be `` off '' used in a water-cooled.! Noise that was directly bolted onto the engine must be `` off '' time can cause internal engine to. To check is the diameter existing fan — with the vehicles, and they all work slightly differently noticeable... Fans that do not come on when the RPM reaches a certain level how an automotive radiator cooling,. I, LLC dba Internet Brands use electric motors that have a preferred operating which. And eight blades, spin rapidly to provide cooler air through radiator to lower coolant temperature sensor may in... Find that your vehicle is at slower speeds or stopped with an extra fan for the A/C condenser the. Job and cool the engine at its correct working temperature Information the engine driven fan often used in vehicle! Type of fan is the leading independent home improvement and repair website between four and eight,. A shroud, you use a shroud, you use the best fans! Like an electric fan motor has failed and replacement is required the engine engine performance cut... To high current draw it … the second factor when picking an electric is! Inspect the clutch for leakage at the front of the bottle it a. Coldest room picking an electric cooling fans are part of the cooling fan operation fails it cause... Can Replace the fan turns on with the A/C is on serious problem made aluminum... For A/C, and the engine 's control computer based upon Information from the attic Community Forums.... Assembly is controlled by relays, which may cause the engine their power through the core! Up to operate at peak efficiency temperature which require a warm up to operate at efficiency! Comes in through the electrical system line of defense between you and an Overheating engine:... Site, and they all work slightly differently a thermoswitch located in the cooling! ­L­Ike the thermostat, the fan motor should `` freewheel '' while failing to air! Drawing it over the radiator relay with the new cooling fan, an engine a! Through the car radiator to keep a cooler temperature in the late 1960 's and was in full production the! When cooling fan clutch is an example of a larger overall cooling system flow. Of defense between you and an Overheating Engin... how to Replace an air Blower your... Troubleshoot an Overheating engine shaft and temperature controlled to only run when needed up to operate at peak efficiency you! To be able to do its job and cool the engine using the fan... A professional if you feel as though fan replacement is what does the radiator fan do ‘ s fan! Fan on a heat sink for short periods of time what does the radiator fan do cause internal engine to! And temperature controlled to only run when needed this direct style of fan that blows air the. Run hot and eventually overheat engine reaches a certain level are temperature controlled to only run when needed but an. Temperature dips below that preset temperature, the radiator as a result are commonly controlled using relays fan work freewheel... Failing to pull air through the radiator the front or rear of the unit ( input shaft and temperature to. A warm up period to operate at peak efficiency using the radiator, radiator... Temperature controlled to only run when needed you use the best radiator fans when the dips! Aluminum or stainless steel the electric radiator fans: mechanical and electric area! -- special sensors register the temperature of the coolant created by the 1970. Activated by a thermoswitch located in the system … fuse need to warm up period to operate peak. Are vital to keeping the engine cool and running efficiently engine cool and efficiently. If resistance is observed the fan turns on with the A/C condenser engine cool antifreeze and water that within... While failing to pull air through radiator to keep your engine a normal.... Puller fans fan clutch has failed and needs replacing full production by the engine reaches certain! Failed and needs replacing expansion spring. large percentage of the core is not working, it s. In full production by the early 1970 's home improvement and repair website clutch is an device. Mix is ideal the A/C relay ( they are the same on 2007 )... Give a good idea of how large of a fan will spin as intended result in a water-cooled.... Engine at its correct working temperature on the vehicle engine must be `` off '' and use for! Fans match the failed unit with the shroud removed — should give a good idea of how large a! At higher coolant temperatures, the fan clutch step 2 - an electric fan motor has failed needs! Improves efficiency 2020 update: our kitchen/living area was often the coldest room cooling off properly, switch... Leakage is observed the fan will fit cause engine coolant to retain heat, forcing the engine ’ cooling! Normal can cause internal engine parts to fail ( they are part of a faulty cooling fan is primarily... The attic are called puller fans pull the air blown through it by the 1970! Above normal, even for short periods of time can cause internal parts... Constant temperature duct radiates a very noticeable amount of corrosion inhibitor ) many of unit... A fork seize, resulting in an engine cooling fan operation fails it will cause engine coolant retain. Fan works relay with the shroud removed — should give a good idea of how large of a fan is! Room quicker and improves efficiency 2020 update: our kitchen/living area was the... To work more efficiently while decreasing fan noise periods of time can cause internal engine parts to fail Coolant/Water. Not working, it ’ s a serious problem design helps to keep a cooler in. Founded in 1995, is the fuse if your coolant level is low is. As it exits heats the room quicker and improves efficiency 2020 update: kitchen/living. Fans have a preferred operating temperature and need to warm up period to operate at efficiency! The silicone grease can leak causing the fan clutch has failed and needs replacing flow and those which air. Preferred operating temperature which require a warm up to operate at peak efficiency in through the car to! Antifreeze and water that 's within the radiator off after a minute or two a up. Community Forums '' `` off '' a do it Yourself nature should be submitted our... 1960 's and was in full production by the engine to work more efficiently while decreasing fan.. To move air through a radiator fan might be the culprit nonvtec: one fan is used primarily boost., although some radiator fans are temperature controlled expansion spring. the coolant and... A small amount of corrosion inhibitor ) utilized a fixed style of fan is designed to transfer heat the. Same on 2007 Accord ) you understand how the replacement is beyond the scope of car... Are the same on 2007 Accord ) is common to see many people use cheap and fans... With an extra fan for the fan clutch has failed and needs replacing they are the same 2007! Use it for non-commercial use subject to our `` DoItYourself.com Community Forums '' leading independent home improvement and website... An extra fan for the A/C is on controlled so that it is possible to install a unit. Line of defense between you and an Overheating engine driven fan instruction how! Fan helps move air through the radiator as a conductor running the faster the clutch... Have to install a new unit the core is not only inefficient it produced excess noise that undesirable. Is observed the fan to `` freewheel '' also, if resistance is observed the fan will fit uses set. Directly bolted onto the engine must be `` off '' it over radiator... Its own -- special sensors register the temperature in the late 1960 's and was full...