Standard Ignition TX261 Engine Coolant Temperature Sensor

Engine Coolant Temperature Sensor Overview

Standard Ignition TX261 is a direct-fit engine coolant temperature sensor built to restore accurate temperature readings in the engine management system. It uses a bolt-on attachment, a round female connector, and a 2-blade male terminal layout for OE-style service on select Chrysler, Dodge, Jeep, and Ram applications.

Compatible With 2017-2021 Dodge Durango, 2021 Chrysler Pacifica and Voyager, 2021 Jeep Grand Cherokee, 2018-2021 Jeep Wrangler, and 2019-2021 Ram 1500 applications, TX261 is a practical replacement when the original sensor is no longer reporting correctly. Standard Ignition TX261 is also cross-referenced to 68217702AC for the same application.

Key Features

• Direct-fit OE replacement for engine coolant temperature sensing
• Bolt-on attachment method for secure mounting
• Round female connector with plug-in connection style
• 2-terminal blade design for proper electrical interface
• Copper alloy conductors for strong electrical conductivity and low resistive loss
• Engineered output curve to support accurate temperature signal reporting
• Built with controlled manufacturing processes for consistent electrical performance

Detailed Description

Standard Ignition TX261 is engineered to match OE fit, form, and function so the engine control system can receive accurate coolant temperature data. Reliable temperature input is important for fuel delivery, idle strategy, emissions control, and cooling fan operation, especially on vehicles such as the Jeep Wrangler, Ram 1500, and Chrysler Pacifica. The sensor’s electrical design and output characteristics are developed to reduce misreading and help maintain stable readings inside the vehicle’s engine management system.

Common Issues This Sensor Can Address

• Incorrect or fluctuating coolant temperature readings
• Temperature gauge behavior that does not match engine conditions
• Fault codes related to coolant temperature signal performance
• Cooling fan operation triggered by inaccurate sensor input
• Driveability concerns tied to poor engine temperature data

Installation Notes and Tips

Verify connector shape, terminal count, and mounting style before installation. Inspect the connector and wiring for corrosion, bent terminals, or heat damage, and confirm the sensor seats properly in the engine block or cylinder head location listed for the vehicle. After installation, clear any stored diagnostic trouble codes and confirm the temperature reading is stable during warm-up.

Quality Assurance

Standard Ignition maintains quality control throughout the manufacturing process, with design and electrical performance checks intended to support consistent operation across the listed applications.