Walker 211-2131 Engine Coolant Temperature Sensor

Engine Coolant Temperature Sensor for Ford Focus

Walker 211-2131 is an engine coolant temperature sensor built to report real-time coolant temperature to the ECM. For 2017-2018 Ford Focus applications, this sensor supports accurate fuel delivery, ignition timing, cold-start enrichment, and cooling fan control.

Walker Products Sensor Only line focuses on direct replacement sensors that match OE-style electrical response and fitment. The 211-2131 is a practical choice when diagnosing a check engine light or replacing a sensor that is no longer sending a stable temperature signal.

Key Features

• Engine coolant temperature sensor for ECM temperature input
• Direct-fit design for 2018 Ford Focus and 2017 Ford Focus from 05/22/2017
• Blade terminal type with 2 terminals
• Female oblong connector shape for factory-style connection
• Built with heat-resistant materials for coolant system exposure
• Walker 211-2131 is engineered to match OE resistance values, thermal response, and signal output
• Sensor only; wiring harness not included

Detailed Description

Walker 211-2131 is an engine coolant temperature sensor that sends temperature data from the cooling system to the ECM. That signal helps the engine computer manage fuel injection, ignition timing, cold-start enrichment, and radiator fan operation. In Ford Focus service work, accurate coolant temperature input is important for drivability, emissions control, and fuel economy.

This Walker sensor is designed around OE specifications so the electrical output and thermal response align with factory system expectations. The oblong female connector, blade terminals, and direct-fit layout support straightforward replacement on the listed Ford Focus applications without modification. This part cross-references Standard Ignition TX326 for the same application.

What It Helps Fix

• Check engine light related to coolant temperature sensor performance
• Hard starting or rough cold starts
• Incorrect fuel mixture caused by inaccurate temperature input
• Cooling fan operation that turns on too early or too late
• Temperature gauge or ECM data issues tied to sensor signal loss

Installation Notes and Tips

Verify connector style, terminal count, and vehicle build date before installation. This part is listed for 2018 Ford Focus, and for 2017 Ford Focus built from 05/22/2017. The sensor uses a female oblong connector with blade terminals and does not include a wiring harness. Confirm the cooling system is safe to service and inspect the connector for corrosion or damaged terminals during replacement.

Quality Assurance

Walker Products designs this Sensor Only component to meet OE-style resistance, thermal response, and signal output requirements for factory integration. The part number 211-2131 is built with heat-resistant materials for use in the cooling system environment.