12317515811 BMW Potentiomet.

This sensor basically tells your engine computer how far down you’re pressing the gas pedal. It’s an electrical component, so it sends a voltage signal – the amount of voltage changes depending on how much you’ve got your foot on the accelerator. It’s measuring the angle of that throttle plate inside the engine. Think of it as a key messenger. The engine computer uses that information from this sensor, along with data from other sensors, to figure out how much fuel to inject into the engine and how much spark to deliver. It’s part of the fuel delivery system, helping everything run smoothly. It works closely with the mass airflow sensor, and sometimes the cruise control system too. It’s a pretty central part of how the engine responds to your input. If this sensor goes bad, you'll notice if things aren’t right. You might get a check engine light, and the engine could run rough, hesitate when you accelerate, or even stall. It acts like a shield protecting the engine from running improperly. Sometimes it can give you poor gas mileage, too. It's not something you want to ignore, because it can lead to more serious problems down the road. We’ve got a good selection of these at Fixparts Online, and usually replacing it is a fairly straightforward job, though it does depend on the vehicle. Built to last: Throttle Position Sensor (MPN 12317515811) includes a 12-month warranty!

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