Standard Ignition TH355 Throttle Position Sensor

Throttle Position Sensor for Ford Focus

Standard Ignition TH355 is a throttle position sensor built for direct replacement service on select 2003-2004 Ford Focus models. It uses a female plug-in connector with 3 male blade terminals and is engineered to maintain a specific installed output for OE-style throttle signal accuracy.

Key Features

• Fits 2003-2004 Ford Focus, N/A
• Standard Ignition TH355 throttle position sensor
• Female connector with plug-in design
• 3 male blade terminals for straightforward electrical connection
• Flexible polyimide film or ceramic-based circuit construction for dimensional stability
• Noble metal contact materials help maintain low resistance over service life
• Integral rotor bearings and return springs support installation and throttle response consistency
• End-of-line testing validates output voltage across thousands of data points

Detailed Description

The TH355 throttle position sensor is built to report throttle angle accurately to the engine management system on the Ford Focus. Standard Ignition uses a fixed installed-output design rather than an adjustable consolidated style, helping preserve OE-calibrated signal behavior. The sensor’s internal circuit materials are selected to resist electrical drift, while the contact design supports stable performance in daily driving and emission-control operation. This part cross-references Delphi SS11786 and Dorman - HELP 75450 for the same application.

For drivers searching for a 2003 Ford Focus throttle position sensor or a 2004 Ford Focus TPS replacement, TH355 provides the connector style and terminal layout needed for service work on the listed application. It is also a practical choice when replacing a worn sensor that is causing inconsistent throttle feedback.

What It Helps Fix

• Erratic throttle signal output
• Throttle response hesitation or delay
• Rough idle caused by incorrect throttle angle reporting
• Check engine light related to throttle position sensor faults
• Driveability issues tied to worn sensor contacts or unstable voltage output

Installation Notes and Tips

Verify connector style, terminal count, and vehicle application before installation. On the 2003-2004 Ford Focus, the sensor should be installed in the original throttle body location and connected securely to the female plug-in harness connector. After installation, clear any stored fault codes and confirm throttle signal output with a scan tool or multimeter.

Quality Assurance

Standard Ignition controls manufacturing from component selection through finished-product testing. Each TH355 sensor is tested at the end of the line to confirm output voltage performance and support trouble-free operation.