Purchase Nissan 240SX Coolant Temperature Sensors Replacement Cost & Nissan 240SX Coolant Temperature Sensors Locate Best Nissan 240SX Temp Senders. Maintaining the Coolant Temperature Sensor (CTS) in your Nissan 240SX is crucial for engine health, ensuring optimal performance and fuel efficiency. Regularly check the CTS for corrosion or damage, and watch for poor fuel economy or an erratic temperature gauge, which could signal the need for a replacement. To extend its lifespan, avoid electrical system overloads and ensure proper coolant levels. When selecting a new sensor, opt for high-quality materials like brass or stainless steel for better durability and heat resistance. Installation is typically straightforward, but always follow the manufacturer's guidelines to guarantee proper function and longevity, keeping your 240SX running smoothly.