Dorman Throttle Position Sensor TPS replacement 977-030 — direct-fit, stable electrical output

The Dorman 977-030 Throttle Position Sensor is a direct-fit replacement that restores accurate throttle position feedback for compatible vehicles.

The Dorman 977-030 TPS is engineered to replicate the fit and electrical function of the original factory sensor, giving technicians and DIYers a dependable option when the stock unit fails. Built from quality components and backed by decades of automotive expertise, this sensor addresses wear, internal electrical degradation, and environmental stress that can compromise throttle position readings.

How will the Dorman 977-030 restore throttle control responsiveness?

Replacing a worn or malfunctioning throttle position sensor with the Dorman 977-030 provides consistent voltage signals to the engine control module, helping smooth acceleration and idle behavior. It returns the sensor’s positional accuracy so the ECU can better regulate fuel and timing under varying loads.

• Direct replacement geometry for factory-style fit and alignment
• Stable electrical output to reduce erratic throttle behavior
• Corrosion-resistant materials to maintain signal integrity

What makes this sensor a reliable service replacement?

The 977-030 is built from vetted components and assembled to meet Dorman’s standards for durability and repeatability. Quality control focuses on long-term wear and the sensor’s ability to sustain accurate readings despite temperature cycles and vibration common in the engine bay.

• Rugged housing to protect internal potentiometer elements
• Electrical connectors designed for secure contact and minimal resistance
• Manufacturing backed by a US-based product expert team

Which symptoms indicate you should replace the throttle position sensor?

Drivers typically notice issues like rough idle, hesitation on acceleration, or inconsistent throttle response when the TPS degrades. While codes stored in the vehicle’s computer can confirm TPS faults, physical wear and intermittent signal can also trigger performance problems.

• Intermittent or unexpected changes in engine RPM at idle
• Hesitation or stumbling during throttle application
• Diagnostic trouble codes related to throttle position or sensor input

How can I ensure the 977-030 fits my vehicle?

To confirm compatibility, use the vehicle selection tool on the retailer’s site or input your car’s make, model, and trim. Dorman engineers the part to match original mounting points and connector style, but verifying fitment avoids returns and installation issues.

• Check your vehicle’s year, make, model, and engine code against fitment listings
• Compare connector shape and mounting locations visually before installation
• Contact support if unsure about compatibility with uncommon trims or aftermarket throttle bodies

Who is this for? The Dorman 977-030 is intended for vehicle owners, independent mechanics, and repair shops needing a dependable replacement for a failed throttle position sensor. It suits anyone seeking an OE-like fit and consistent electrical performance without the complexity of custom calibration. Ideal for repairs that restore reliable throttle feedback and reduce drivability complaints, this sensor is a practical choice when the original unit shows electrical wear, erratic output, or has failed diagnostic checks.