How To Install Electric Fans On Radiator – The Pacet electric fan is available in two sizes. You need depending on the size of your machine. The smaller fan (A) is already installed with the motor on the auxiliary bracket. The main fan (B) must be pre-assembled using auxiliary supports (C) and motor (D). Both devices are supplied with a thermal sensor and a switch with mounting bracket (E). To connect the fan to the radiator, use special connectors, washers, sponges and nuts (F). Additional cables and terminals with in-line fuse (G) are included for the fan cable.
All cars have a fan that helps cool the coolant as it passes through the radiator. In most cars, the fan is driven directly by the engine, usually via an alternating drive belt. But this arrangement means that the fan always runs at the same speed as the motor. This has many disadvantages.
How To Install Electric Fans On Radiator
First, the fan runs as soon as the engine starts and cools down. It happens when the engine needs to warm up as quickly as possible for maximum performance and the operation of the fan delays this process.
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Second, when the car is moving fast and the engine is running at high speed, the fan turns over at full speed. But in these conditions the airflow through the radiator is enough to make the air conditioner run for no reason: all it does is waste energy.
Third, in traffic jams, when the engine is idle and the car is at a standstill, there is no adequate airflow through the radiator, so the engine can easily overheat. However, because the engine is idle, the fan runs at very slow speeds and often does not maintain enough air conditioning.
The solution is to install an electric motor driven by a motor. The fan is turned on and off by a thermal sensor switch located in the cooling system.
When the coolant temperature rises to a certain point, the sensor will activate the fan. The fan then runs until the temperature drops below the critical point when the sensor turns off the fan. The electric fan keeps the engine close to its optimum operating temperature, saving fuel and gaining engine power.
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Details of the different electric cooling fan connections for the front and rear wheel motors. This sheet looks at the rear wheel fans. Other categories will be dealt with in the project sheet later.
First, remove the alternator belt and unscrew the existing fan from the pump or crankshaft pulley. Tighten the bolts to hold the pulley, but make sure it doesn’t extend too far behind the pulley. If necessary, place an additional washer under the screw head to compensate for fan loss.
Refer to the installation instructions to find out if you are installing a fan on the front or back of the radiator. The fan is not always mounted in the center of the radiator, it can be moved to clean the clogs like a pump. You may need to remove the radiator to replace the fan.
Some devices come with a fan and motor already mounted on the mounting bracket, while others require assembly. If yours comes in pieces, refer to the instructions and assemble the fan and bracket to the motor. When installing the fan, make sure the right side is facing the front of the car.
Official Electric Fan Wiring Thread!
Place the fan mounted on top of the radiator. Hold the fan in place and place the washer between a fan bracket and the front of the air conditioner. Place the sperm on a plastic base, then sew the base through the supports and grommet, then cut off the radioactive fins. Repeat for the other brackets.
Place the fiber grommet on the ends of the four plastic brackets where it exits the radiator, then with a sponge pad. Place a plastic “nut” on each end. Tighten them by holding the “nut” with the wrench open while simultaneously pulling the base through the radiator with pliers.
Drain the cooling system and remove the upper hose at the end of the radiator. Align the end of the sensor tube and place the sensor on the upper tube. Place a special rubber seal on the radiator hose, then place the sensor tube aligned on the seal. Place the upper hose over the seal and tube and tighten the clip.
Place the heat switch in its holder. Find a place near the refrigerator to place the switch. If there are no screws or bolts to fasten, drill some holes and use self-tapping screws to fasten them. Make sure that the sensor tube is not bent sharply and that it does not fall on hot or moving parts.
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Disconnect the battery. Run the wiring from the fan motor active terminal to the power supply with controlled ignition. Place the fuse hole in line with this wire. Run the remaining wires from the motor to one terminal on the heat switch. Other terminals of the thermal switch must be connected to a nearby ground point.
Reattach the battery, then turn the heat switch adjustment screw clockwise. Start the engine and allow it to warm up until the temperature gauge is above normal. Slowly turn the adjustment screw counterclockwise until the fan starts. The fan should run for 20-30 seconds before shutting off. It used to be an electric radiator fan, a low-efficiency add-on that can extract a few degrees of extra heat from an overheated muscle car. Today, however, they are an integral part of all but the heaviest vehicles.
There are hundreds of radiant fans available in spines of various sizes, most of which are determined by space considerations. If fan depth doesn’t matter, the consensus among certified manufacturers is whether Ford’s 18-inch Lincoln Mark VIII fan or a slightly smaller 17-inch Taurus LS / ’95 Thunderbird / ’95 Cougar fan is the best These fans move a lot of air volume, which is why they are so popular with car manufacturers. The hero is clearly an 18-inch Lincoln fan dog who is still easy to find in the mountains. If you’re struggling to find a used item for around $30, consider the new Rock Auto for just $72 plus shipping. Most of these radiant fans operate at two speeds, high or low, depending on the temperature of the coolant. However, some are capable of only one speed. The three-pin connector features a two-speed version. An electric fan with only two wires in the plug is a most undesirable single speed unit.
Wiring is an area where some car manufacturers may need help. Instead of just turning these electric fans on and off in high speed mode, there is a simple and easy way to wire a fan to run in both modes at high speeds when needed. This is especially important when you consider that one side of a high-speed fan needs 40 to 42 amps each to keep spinning. This puts a significant strain on the charging system. Low speed mode draws 28 amps, which is conservative.
Amazon.com: Dual Electric Fan Relay Kit Electric Fan Wiring Kit Thermostat Kit 185 On 175 Off 40a Temperature Sensor Switch Radiator Electric Cooling Waterproof Relay Harness
Both the Lincoln and T-bird / Cougar radiator fans have built-in fans, which is another reason they provide such great cooling capabilities. Because every car application is different and car manufacturers are good at installing electric fans, we focused our attention on fundamental aspects of wiring and developed an effective switching mechanism. As long as you flip the simple switch, this is troglodyte technology. We can do better. Both Delta Current Control and Spal develop high pulse width (PWM) fan controllers that can increase fan speed just like factory computer controllers. These controls are a great way to emulate your muscle car’s new cooling technology, and the controls are very reasonable. DC Control sells the base box for about $150, or you can buy a Spal PWM controller for under $140 from The Fan Man.
In our search for an auditor, we stopped by Hollister Road Co. By Dave Chapman, who offers a beautiful three fan relay control system that is simple and inexpensive. The best version of this system is a three-speed transmitter that comes with two temperature sensors. The low speed sensor connects the fan at 180 degrees F, while the second sensor connects the high speed part of the fan at 195 degrees F. The three relays are wired together for easy assembly.
We cannot stress enough the importance of a high efficiency alternator to provide the voltage needed to spin the fan. Plan to use a 100 amp power converter to ensure enough power for all of your muscle car’s electrical equipment. (We covered the high performance alternator in Junkyard Builder’s September 11th installation.) Find a good Mark VIII fan and then you can relax too.
This is the ’95 Taurus two speed electric fan on Tom Hackmann ’71 Maverick that will be in the magazine soon. He reports that the fan does a great job of cooling
