Walker 211-91040 Engine Coolant Temperature Sensor

Engine Coolant Temperature Sensor Overview

Walker Products FSK 211-91040 is an engine coolant temperature sensor for select Saturn applications. It provides the temperature signal the engine management system uses to monitor coolant conditions and support proper fuel and ignition control.

Built by Walker Products, a long-standing manufacturer of engine sensors and fuel system components, this part is produced to meet or exceed OEM standards and specifications for accurate vehicle application coverage.

Key Features

• Engine coolant temperature sensor for select Saturn models
• Walker Products FSK line replacement part
• Built to OEM standards and specifications
• Backed by Walker Products engineering and technical support resources
• ISO 9001/IATF16949 certified manufacturing environment
• Part number: 211-91040

Fitment Details

• Fits 1995-2002 Saturn SC1, N/A
• Fits 1995-2002 Saturn SC2, N/A
• Fits 1995-2002 Saturn SL, N/A
• Fits 1995-2002 Saturn SL1, N/A
• Fits 1995-2002 Saturn SL2, N/A
• Fits 1995-2001 Saturn SW2, N/A
• Fits 1995-1999 Saturn SW1, N/A

Detailed Description

Walker Products FSK 211-91040 is an OE-style engine coolant temperature sensor for Saturn SC1, SC2, SL, SL1, SL2, SW2, and SW1 models across the listed model years. This sensor reports coolant temperature to the engine control system, helping maintain accurate temperature-based engine management. If you are replacing a faulty Saturn coolant temperature sensor, 211-91040 offers direct application coverage for the specified vehicles.

This part cross-references Standard Ignition TX73 for the same application.

Common Issues This Part May Resolve

• Incorrect coolant temperature readings on the dash or scan tool
• Hard starting when the engine is cold
• Rough idle or inconsistent warm-up behavior
• Fuel mixture concerns related to inaccurate temperature input
• Check engine light conditions tied to coolant temperature sensor faults

Installation Notes and Tips

Verify the connector style and thread engagement before installation. Inspect the cooling system for leaks, corrosion, or damaged wiring that could affect sensor performance. Clear diagnostic trouble codes after installation and confirm the repair with a scan tool if available.

Quality Assurance

Walker Products has supplied automotive fuel system and engine sensor components since 1946 and manufactures products to meet or exceed OEM standards and specifications. The company supports its parts with product management, engineering, application data, and technical support, and operates under ISO 9001/IATF16949 certification.