Delphi TS10149 Engine Coolant Temperature Sensor

Engine Coolant Temperature Sensor for Ford and Mercury

Delphi TS10149 is an engine coolant temperature sensor built for direct replacement service on select Ford and Mercury vehicles. It uses a 2-terminal blade design with a single female connector and push-on mounting for a straightforward OE-style fit.

• Engine coolant temperature sensor for cooling system temperature monitoring
• Blade terminal type with 2 terminals
• 1 female connector, square connector shape
• Push-on mounting type
• Wiring harness not included
• Package contents: engine coolant temperature sensor and instruction sheet

OE-Style Design and Fitment

Delphi TS10149 is engineered with OE heritage and decades of supplier experience built into the part design. It is a direct-fit engine coolant temperature sensor for 2004 Ford Focus, 2000-2003 Ford Escort, 2000 Ford Contour, 1999-2000 Mercury Mystique, and 1999 Ford Contour from 05/03/1999. This Delphi TS10149 replacement sensor supports accurate coolant temperature reporting for vehicles that rely on a properly functioning temperature signal.

This part cross-references Standard Ignition TX90 for the same application.

What This Sensor Helps Address

• Incorrect coolant temperature readings
• Hard starting or rough running related to temperature signal errors
• Illuminated engine warning lights tied to sensor faults
• Poor fuel control caused by inaccurate engine temperature input
• Cooling system data issues on Ford Focus, Ford Escort, Ford Contour, and Mercury Mystique applications

Installation Notes and Tips

Verify the connector style, terminal count, and mounting style before installation. The sensor uses a square female connector with blade terminals and push-on mounting, and no wiring harness is included. Confirm vehicle application details carefully, especially for 1999 Ford Contour and 1999 Mercury Mystique models with the 05/03/1999 note.

Quality Assurance

Delphi draws on more than 100 years of OE experience and supplier knowledge from work with major automakers, with that background reflected in its aftermarket replacement parts.