If fan component replacement is necessary, we can accommodate the needs of any fan configuration. A jumper wire can be used to check the motor, and voltage and resistance checks can be used for switch and relay, but a scan tool may be necessary to achieve a diagnosis. Electric cooling fans may not operate because of a malfunctioning switch, bad fan relay, defective fan motor, or faulty control module. Leaking fluid and a fan that is seized, spins roughly or spins excessively indicates a bad fan clutch. Check the fan blades for cracks and damage as well. One or both fans may run when the A/C is turned on to provide airflow through the condenser.īefore condemning the fan for a cooling system related problem, check the shroud for cracks and missing pieces that could reduce airflow through the radiator. When engine coolant reaches a pre-determined temperature, a switch signals the Powertrain Control Module (PCM), which activates the fan until the temperature drops below the switch rating. Shrouds are used with both mechanical and electric fans to ensure all airflow is drawn through the radiator. One or two electric fans are mounted in a shroud assembly that attaches to the radiator. In addition, most fan clutches are thermal, so they engage and disengage according to air temperature to make sure the vehicle will not get overcooled.Īn electric cooling fan blade is driven by a 12V electric motor that operates in response to coolant temperature and the air conditioning switch. Because fan operation is generally not needed when the vehicle is running at a speed of 25 mph or higher, the fan blade is attached to a clutch that disengages the fan to reduce noise and save fuel. Most mechanical fans mount on the water pump shaft and are driven off of the crankshaft with the same belt and pulleys that turn the water pump. Depending on an application, it can be either mechanical or electric the latter one is common for all modern-day vehicles.Īs it was mentioned before, there are mechanical and electric cooling fans. ![]() However, when your vehicle is moving slowly or stopped, there is little or no ram air through the grille, so the necessary airflow is supplied by a cooling fan. Heat from the coolant in the radiator core tubes is transferred to the fins and to the air flowing through the radiator, thereby lowering the coolant temperature. See all Flex-A-Lite® electric fan conversion applications for Ford F-Series and Dodge Ram trucks below.The radiator is mounted at the front of your vehicle behind the grille where it is exposed to airflow when your vehicle is at speed. It can also improve fuel economy by up to 3 mpg.Īn electric fan in these application helps the engine come up to operating temperature quicker in cold weather, and improves air conditioning performance in hot weather.įlex-A-Lite® fan systems that include our adjustable thermostat controller or variable speed controller also have provisions for a manual override switch. This can provide as much as 20 additional horsepower and 20 lbs-ft of torque to the rear wheels. These electric fans systems are designed to replace the heavy clutch fan, freeing up horsepower and torque lost to the parasitic loss of turning the belt-driven fan. Flex-A-Lite® manufactures high-performance electric fan conversions systems for a variety of Dodge Ram full-size trucks (both with the HEMI and Cummins turbodiesel engines), as well as Ford F-150 (gasoline engines) and Super Duty trucks with Power Stroke engines.
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