![]() Remember the signal to those wires we brushed over? That signal comes from either the Engine Control Unit (ECU), the Transmission Control Module (TCM), and often both. The torque converter is a hydraulic coupling that replaces the standard clutch a manual transmission would have. The torque converter solenoid is used to regulate the proper pressure in the torque converter coming from the engine to the drivetrain during shifts. The pressure control solenoid is the main focus and works in the transmission to ensure gears are shifting. In an F-150, there are only two types you need to be aware of: ![]() Lastly are the input and output openings, where the fluid enters through the solenoid.Īlthough it may seem complicated, this is a relatively simple piece, and some packs can have up to 10 solenoids each. One signal will open the valve, while another will close it. Next is a spring-loaded valve that can open and close depending on the magnetic pull the coil is emitting. This is what turns the electrical signal into an electromagnetic force. We'll touch more on why this is important later. This is how the signal gets into the solenoid to open and close as needed. These four components allow transmission fluid to move and build pressure, an essential function for proper performance.įirst, you have the wires. This fluid control puts hydraulic pressure on gears inside the transmission housing and is how automatic transmissions can shift gears without manual input.Ī solenoid is comprised of four main parts that work to convert electrical signals into mechanical movement. This allows transmission fluid to travel simultaneously to and from different places. In the context of a transmission, these often come in large numbers as part of a housing or "solenoid pack". What is a Transmission Solenoid and How Do They Work?Ī solenoid is an umbrella term for an electromagnetically controlled valve. We looked at the F-150's transmission solenoid, sourced common symptoms that it may have a problem, and outlined exactly what it takes to fix a failure. What is a transmission solenoid, and how do they work?.In this article, we'll look at such things: One problem nobody can control is transmission solenoid failure. It is a top-rated, heavy-use vehicle for everything from max-load towing to long highway cruises.īut is everything on this respected truck built as "Ford Tough" as it is claimed to be? While nobody wants mechanical issues, they are often unavoidable for even the most durable vehicles. The Ford F-150 is by far the most renowned truck in the world, selling nearly twice as many cars as the next competition. ![]()
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