Land Rover LR4 Throttle Controller Replacement at your home or office.

What is the Throttle Controller all about?

Before the late 1980s, most cars had a straightforward mechanical throttle control. When a motorist wanted to move forward, they stomped on the accelerator pedal, the throttle blade opened, and air flowed into the engine. From here, it mixed with fuel, combusted, and turned the car’s wheels. (I’m skipping a few steps, but you get the gist.) To go faster, all the driver had to do was press down harder with your right foot—the throttle would open wider, giving the car a boot of power.

Today, most vehicles are equipped with electronic throttle control (ETC), or throttle-by-wire. An ETC electronically “connects” the accelerator pedal to the throttle, replacing the mechanical linkage. Now, when a driver steps on the gas pedal, instead of opening the throttle blades, he or she is activating an accelerator pedal module. It converts the pressure you put on the accelerator pedal into an electric signal, which is sent to an electronic control unit or computer, which opens and closes the throttle blade, increasing or decreasing the power output of the engine for optimum efficiency and performance.

Electronic throttle control is more complex, but has benefits:

• Reduced maintenance costs: Mechanical throttle systems are made up of a lot of moving parts, so they are subject to a lot of wear. By comparison, an ETC system has fewer moving parts, which means fewer parts to breakdown.
• Improved drivability and safety: An ETC allows for the integration of advanced driver assists, such as adaptive cruise control, brake override systems, and electronic stability control, and it reacts faster than a human (backs off the throttle) in situations where a vehicle loses traction.
• Reduced emissions and improved fuel economy.