A 5-Step Guide to Auxiliary Fan Assembly Installation
When your vehicle's built-in fan isn't enough to cool down the radiator and the engine block, the auxiliary fan is there to help. This dependable cooling machine is usually located in front of the radiator assembly. It is responsible for cooling down the air-conditioning condenser, the radiator, and the entire engine bay. With this huge responsibility, it is normal for the auxiliary fan to wear down and fail at some point. When the interior air vents start to produce warmer air or you begin to hear annoying noise from the front portion of the radiator assembly, you probably have an auxiliary fan dilemma. In case you decide to install a new auxiliary fan, you can follow this helpful guide. This project can be done in an hour.
Required skill level: Intermediate
Needed tools and materials
- New auxiliary fan assembly
- Floor jack
- Jack stands
Preparing the vehicle for the project
Use the floor jack to lift your vehicle. If you are planning to pull the auxiliary fan from below, make sure to lift the car higher to give you ample room beneath the hood. After putting up the jack stands, detach the negative battery cable.
Removing the radiator covers and miscellaneous parts
Remove the protective coverings located at the top and bottom portions of the radiator and the condenser. If you think the installation will cause damages to the fog light lenses, you can opt to remove them as well. Use the screwdriver in removing the abovementioned parts.
Taking out the busted auxiliary fan
You will have to unbolt all the screws holding the broken auxiliary fan in place before removing the electrical wirings connected to the fan assembly. Most auxiliary fan assemblies have six mounting screws. Remove all of them from top to bottom using the screwdriver. Unplug the power connector. After that, pull the entire auxiliary fan assembly away from the mount. You have the option to take it out from the top or bottom portion of the hood.
Installing the replacement auxiliary fan
Slide in the replacement auxiliary fan assembly. Make sure that the frame is correctly positioned on the mount. Tighten all the screws to secure the new fan assembly in place. Reconnect the electrical wirings that provide power to the auxiliary fan.
Testing the new fan assembly
Before you re-install the radiator covers and other parts, test if the fan is properly working. Reconnect the negative battery cable, and start the engine. Check if the new auxiliary fan is operating quietly. If it isn't working, check and tighten the power connector. Once everything is good, put all the radiator covers and the fog lamp lenses back. Remove the jack stands, and put your vehicle down.
Tips and warnings
- Once you have removed the old auxiliary fan assembly, you can use compressed air to clean the fan mount and the condenser.
- For easy access on the top screws that hold the fan assembly, you can unbolt them through the grille using a 12-inch extension.
TYC Genera vs. VDO: Which Brand has the 'COOLER' Auxiliary Fan?
It is the major responsibility of the auxiliary fan to cool down the radiator as well as the other components of the engine block. Since it plays a vital role in the overall dynamics of the vehicle, it is important for you to get a replacement unit that spells extreme durability and superior cooling power. When you hear about automotive cooling systems and auxiliary fans, TYC Genera and VDO are two of the most recognized brands. Both claim supremacy in endurance and temperature-decreasing capability, but each brand's list of perks and features goes on. To aid you in choosing the perfect auxiliary fan to match your vehicle, here is a quick and useful guide:
VDO offers a wide range of car cooling system components, which include cooling modules, cooling motors, and auxiliary fans. This brand also sells the individual components of the auxiliary fan assembly separately. Their auxiliary fans are available in single or dual units. The same goes for the cooling product selections of TYC Genera. The brand also offers the cooling systems and their components in sets or individually.
WINNER: TYC Genera and VDO
To test the cooling prowess of both brands, we installed a VDO auxiliary fan in one of our two BMW E34s. The second BMW E34, on the other hand, received a TYC Genera auxiliary fan. After a series of road tests in various temperatures and driving conditions, both cooling fan brands proved their ability to provide extra cooling capabilities to our road surfers. The radiators and engines of both E34s were cool and steady even in higher temperatures and longer driving periods. Vibrations were low, and the normal operation of the fans produced zero to low noise.
WINNER: TYC Genera and VDO
TYC Genera and VDO both have a price range of $90 to $400 for their auxiliary fans. With this rate, TYC Genera and VDO will be able to cater to consumers in different levels of spending capacity. Moreover, the prices of the products of both brands also depend on the package inclusions as well as whether the auxiliary fans are single or dual.
WINNER: TYC Genera and VDO
In terms of the warranty offerings, most of the auxiliary fan products manufactured by TYC Genera and VDO have a 12-month or 12,000-mile manufacturer warranty.
WINNER: TYC Genera and VDO
VDO and TYC Genera auxiliary fans both performed well in the series of comparisons and tests that were conducted. They were basically even in all criteria including the performance, product selections, price range, and warranty coverage. Whichever brand you choose, you will definitely enjoy the benefits and features of a top-notch auxiliary fan assembly.
Power up your engine's performance by giving it what it needs-new auxiliary fan assembly.
You don't want your ride's engine to sputter due to overheating, right? That's why it's equipped with a cooling system that has the radiator as its center. However, in order to feed it with an ample supply of air, especially during tough driving scenarios, your ride should also have an Auxiliary Fan Assembly.
This fan assembly consists of a fan motor, fan blade, and shroud. It provides air to your ride's radiator. This air assists in hastening the cooling of your engine. This device serves as a backup when the primary fan falters or when the heat becomes too high for just one fan to handle. On the other hand, this fan is not only meant to cool the engine because you can also use it to provide ventilation when the air conditioning system of your ride fails.
On a different note, when you pick an Auxiliary Fan Assembly for your own vehicle, make sure that it's tough and rust resistant. Aside from that, it also needs to be easy to install, so you won't be wasting your time putting it in place. More importantly, get it from a top-caliber online store that can offer you low prices, superb service, and on-time delivery.
Does Your Car Need an Auxiliary Fan?
Has your vehicle been running a little bit too hot the past few days? When you’ve noticed that you tend to overheat when sitting in traffic or going uphill, then you might want to consider getting an auxiliary fan to help out your car’s radiator. This is a relatively inexpensive add-on that is quite easy to install, but you have to make sure that you get a model that’s perfect for your vehicle. Let us show you how.
Why do you overheat?
Your car’s radiator relies on the airflow coming in from your front grille to cool down your engine. When you’re driving at slower speeds, going uphill, or when you’re stuck in heavy traffic, your engine would be running at a lower RPM. As such, your belt-driven fan won’t be turning fast enough to push in enough air to cool down your radiator. An auxiliary fan will solve this problem since it will be blowing in air when you need it the most.
What to look for in an auxiliary fan?
Typical auxiliary fans tend to range somewhere between $100 - $150, and higher end models can go as high as $500 or more. We recommend that you look for a fan that doesn’t have full shrouds or unnecessary panels that could block air from reaching your radiator. Manually controlled auxiliary fans tend to be cheaper than automatic ones, but you wouldn’t want to be bothered turning a fan on and off so it’s better to spend a little bit more money and get the automatic fan instead. This is a very simple device, so you won’t have any problems when you get an OEM replacement, especially when it’s designed for your vehicle’s particular make and model. Finally, we strongly urge you to install it yourself. Installing an auxiliary fan on your own should be pretty much straightforward, so it wouldn’t make sense to waste money by hiring a mechanic to help you out.
Replacing Your Car
Your vehicle should keep cool when your auxiliary fan is running properly, but unfortunately, it will deteriorate over time and should be replaced ASAP, unless you want your engine to keep on overheating. Replacing an auxiliary fan will vary from vehicle to vehicle, so it’s best to consult your car’s manual or a service guide so you’ll have an idea on how you could install an aftermarket auxiliary fan. For this guide however, we’ll be using a BMW 5-series sedan (the E36 in particular), as a way to demonstrate how easy it is to remove an auxiliary fan, and how it may look like on other similar vehicles.
Difficulty Level: Moderate
Tools that you’ll need:
- Screwdriver set
- Wrench set
- Old rag
- Can of compressed air
- Jack and jack stands
- Replacement auxiliary fan
Removing your old fan
Step 1: We always recommend that you disconnect your car’s battery before working on electrical components in your vehicle, to avoid any accidental electrocutions or short-circuiting your electronics.
Step 2: For this vehicle, you’ll need to remove the black plastic cover that’s located on top of the radiator by loosening a couple of screws. On some cars, you’ll have to remove the front bumper as well, just to access the aux fan.
Step 3: Once you’ve removed the cover, you’ll need to jack up the front of your vehicle to a comfortable height, so you could easily reach for your fan assembly from below. Make sure that you secure your car on a couple of jack stands as well.
Step 4: You’ll have to remove the fog lamp covers on this vehicle in order to access some wiring behind it that’s connected to the auxiliary fan. You might not have to do the same with other vehicles, so it’s best to consult a particular vehicle’s service manual beforehand.
Step 5: Take out the cover protecting the underside of the radiator by removing a couple of screws. Take extra care that you do not damage any of the pipes near the radiator.
Step 6: From here, you’ll have ready access to the fan assembly. Disconnect the power connector that’s attached to it before you start removing the bolts that are holding the aux fan in place. You might need to yank on the fan assembly a little bit, but just be extra careful that it doesn’t crash into nearby parts like the condenser.
Step 7: Before you start installing your new fan assembly, we advise that you take the opportunity to clean the exposed area with a rag or a can of compressed air.
Installng a new auxiliary fan
Step 1: Slide in a brand new auxiliary fan and make sure that you bolt it in tightly. Don’t forget to connect the power connector, since you won’t be able to reach this once you’ve put everything back into place.
Step 2: You should test your auxiliary fan before you place all the covers back into place. Reconnect your car’s battery and make sure that there aren’t any debris or pieces near the fan that could hit it before you start your engine. Once you’ve checked that your fan is running well, you should turn off your vehicle and place all the covers back into place.
Step 3: Once you’ve bolted on all the covers, place your car back on the ground and you are done!
Changing your auxiliary fan should be as easy as taking your old one off its mount and plugging in a replacement, but getting access to the fan itself is what differs from vehicle to vehicle. You’ll have to be patient in doing so, or have a service manual at hand, but in the end, you’ll find that it’s quite easy to finish this simple DIY repair job.