This coolant temperature sender, part number 05C919501 from VAG, is a critical component for your vehicle's engine management system. It plays a vital role in regulating your engine's operating temperature by providing real-time data to the engine control unit (ECU). By accurately measuring the coolant temperature, this sender allows the ECU to make precise adjustments to fuel injection timing and quantity, as well as control the activation of the cooling fan. This ensures your engine operates within its ideal temperature range, preventing overheating and promoting fuel efficiency. Crafted to meet VAG's stringent quality standards, this sender is built for durability and reliable performance. Replacing a faulty coolant temperature sender can resolve issues such as poor fuel economy, rough idling, engine misfires, and the illumination of the check engine light.
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