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Electric Fans

  • 3 Easy Ways to Prep Your Car or Truck for Summer Heat

    Comments ON 2018 May 15
    by therealcoleq

    Summer is nearly here, which means it’s time to get out there and have some fun with your hot rod, muscle car, 4x4 or truck! It can also mean overheating or living in fear of overheating if the cooling system isn’t up to the task.

    Fortunately, keeping your customized and hot-rodded vehicle cool isn’t too difficult. Here are three things you can do right now to make sure that you have fun in the summer sun!

    Continue reading

  • Using the Flex-a-lite 1000 Airmover at the Race Track

    Comments ON 2017 March 24
    by therealcoleq

    If you are a racer, you know how critical is to cool your car down quickly between rounds at the race track. You often have only a matter of minutes before it’s time to pull back into the staging lanes. Cooling your intake manifold, supercharger, fuel lines, clutch, transmission and more makes a significant difference in the car’s performance. While we’ve seen everything from clumsy box fans to leaf blowers used as pit fans, the Flex-a-lite 1000 Airmover has the function and features to make it the ideal fan for use at the race track. Continue reading

  • How to Convert a Puller Electric Fan to a Pusher

    Comments ON 2016 July 23
    by therealcoleq


    Many Flex-a-lite electric fans can be reversed, so they can be used as either a pusher fan (an auxiliary fan mounted to the front of the radiator) or a puller fan (primary cooling fan, mounted behind the radiator). The process of reversing them is easy and straight-forward.

    Lift the blade off the shaft (you may have to wiggle it side-to-side while lifting), turn the blade over and insert it back onto the shaft. Re-install the E-clip. Continue reading

  • How to Troubleshoot Issues with a Flex-a-lite Variable Speed Controller (VSC)

    2 Comments 2016 July 4
    by therealcoleq


    With any advanced, multi-feature electronic device, there are opportunities for things to not always work correctly. The Flex-a-lite Variable Speed Controller (VSC) is our most advanced electric fan control module, and it has several features built in. The following video and guide will help you diagnose and troubleshoot issues if your electric fans are not functioning the way you think they should when using the VSC.

    Most of the time, when we get questions from customers regarding the VSC, the problem is a wiring issue. The first thing for you to do when troubleshooting an issue is to check all of the wiring connections at the controller. Double check the routing of the wiring. Look for signs of excessive heat at the connections or frayed wiring. Replacing any wiring that looks suspect. Many of the problems that customers experience are simply caused by not connecting the large black and red wires from the controller directly to the battery. Continue reading

  • How to Install Flex-a-lite’s 3-Way Electric Fan Manual Override Switch

    Comments ON 2014 September 4
    by therealcoleq

    For decades Flex-a-lite has included a terminal on its popular electric fan controllers to allow customers to connect an override switch to either turn the fan(s) off for water crossings in an off-road vehicle or to make ordering in the drive-through a bit easier, or to turn the fan(s) on for additional cooling which is handy for a race car in between runs on the track. This is in addition to the automatic function of the fan controller which turns the fan(s) on and off according to engine coolant temperature. Flex-a-lite recently introduced a new 3-way switch (part number 31143), though that lets you override the fan controller for both manual on and off operation! Additionally, the rocker switch is illuminating, with a red light indicating that you’ve manually turned the fan off, and blue to remind you that you have the fan in manual on position. Continue reading

  • Tips for Mounting a Flex-a-lite Fan Controller

    4 Comments 2013 August 6
    by therealcoleq

    Most of the Flex-a-lite electric fans come with either and Adjustable Thermostat Controller our Variable Speed Controller. While we've done a segment on wiring them, one of the common questions we get is where is the best place to mount them?

    There are a couple of things to consider when choosing a location:

    • You will need it to be close enough to the radiator for the temperature probe to reach.
    • You want to keep it away from extremely high heat. Typically, on the radiator support or high and forward on an inner fender panel is good.
    • You will also want to mount it high in the engine bay to keep it away from road debris and excessive water that can splash up as you drive.
    • Finally, they are water resistant, but not waterproof. Do not mount them in a way that allows water to pool up around the terminals.

    Flex-a-lite fan controllers are designed to take the place of relays, and offer you the ability to adjust what temperature the fan or fans turn on at, ranging from approximately 160-240 degrees Fahrenheit. We match the proper controller with our fans to accommodate the amp load, and we provide either a fuse or breaker. If you want information about choosing the right controller for your application, check out this article.

    For more information, visit

  • How to Choose the Right Electric Fan

    1 Comments 2013 April 25
    by therealcoleq

    Replacing a belt-driven fan on your engine with a Flex-a-lite electric fan can be a great way to improve power, fuel economy and even give you a quicker engine warm-up. But how do you choose the right electric fan for your application from the 82 different part numbers on

    The first step is to know what fits. We covered this in an article previously. In this article we're going to spend more time talking about the differences between the various fans that fit your application to help you get the right electric fan. Continue reading

  • Introducing the Flex-a-lite 50th Anniversary Camaro SS Project

    3 Comments 2012 June 14
    by admin

    We’re in the business of building performance cooling products. But every once in a while, we take it upon ourselves to build a performance car or truck to show off our wares. At the last SEMA show, we introduced a Flex-a-fit® direct-fit aluminum radiator and electric fan combination for the popular 2010-2011 Camaro. For the show, we outfitted an otherwise stock Camaro SS with the new system (you can watch the installation by clicking here). As we made preparations for our 50th Anniversary Tour, we decided to make some more modifications to the Camaro to complement the Flex-a-lite performance cooling system and help the car better fit in at the high-performance stops we have planned for the tour. Continue reading

  • Choosing the Best Flex-a-lite Fan Controller for Your Vehicle

    18 Comments 2012 May 24
    by admin

    Flex-a-lite fan controllers are much more than just a relay for your electric fans. They turn the electric fans on and off, most of them provide the ability to adjust the temperature at which the fans turn on and almost all of them take the place of relays that other brands of fans require.

    Many of our Flex-a-lite electric fans include a Flex-a-lite fan controller already, but the fans are also available without any controls.

    Here's a breakdown of what each of our controllers do so you can choose the one that's best for you... Continue reading

  • How and When to Use an Auxiliary Electric Fan

    2 Comments 2012 March 22
    by therealcoleq

    Is your car running a little hot in traffic or when you're moving slow? Is your truck or RV running hot when you are towing up a hill during the hot summer months?? Consider adding an auxiliary electric fan to help your primary cooling system.

    At slow speeds or while sitting in traffic, you have very little or no ram air coming through the radiator, and typically, the engine is running at a lower rpm, which means the belt-driven fan isn't moving much air either. In some applications, this can cause the engine to run hot or overheat because there isn't enough air moving through the radiator.

    Adding an auxiliary electric fan to the front of the radiator can overcome this problem. Continue reading

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