Thorttle Position Sensor Repair Cost
The cost to replace or repair a Throttle Position Sensor (TPS) can vary based on several factors, including the make and model of the vehicle, and whether you choose an original equipment manufacturer (OEM) part or an aftermarket part. Here's a general breakdown of the costs involved:1. Parts Cost: - The cost of a new TPS can range from $75 to $300. OEM parts tend to be on the higher end of this range, while aftermarket parts are usually more affordable.
2. Labor Cost: - Labor costs for replacing a TPS typically range from $125 to $250. Most TPS replacements take 1-2 hours, billed at our shop rate of $125 per hour.
3. Total Replacement Cost: - Combining parts and labor, the total cost to replace a TPS usually falls between $200 and $550.
4. Repair vs. Replacement: - In some cases, cleaning or adjusting the TPS might be possible, which could reduce costs. However, if the sensor is faulty, replacement is generally recommended.
5. Additional Costs: - Diagnostic fees typically run $125 to confirm the TPS is the issue. This includes a complete computer scan and testing of the sensor. It's always a good idea to get an accurate quote for your specific vehicle model. While DIY installation is possible, professional installation ensures proper calibration and includes a warranty on both parts and labor.
Replacement Procedures
When replacing or repairing a Throttle Position Sensor (TPS), several steps and considerations are typically involved to ensure your vehicle operates correctly. Here's a general overview of what is included in our process:1. Diagnosis:Our technicians perform a thorough diagnosis to confirm that the TPS is indeed the faulty component. This includes using an OBD-II scanner to check for error codes related to the TPS and performing tests to verify its operation.
2. Preparation:We disconnect the vehicle's battery to prevent any electrical shorts or issues during the replacement process. Our technicians use professional-grade tools, including specialized screwdrivers, wrenches, and multimeters for testing.
3. Removal of the Old TPS:Our team locates the TPS, which is usually mounted on the throttle body. We carefully disconnect the electrical connector from the TPS and remove any screws or bolts securing it to the throttle body, taking care to protect all surrounding components.
4. Installation of the New TPS:We precisely position the new TPS, ensuring proper alignment with the throttle shaft. Our technicians secure the TPS with the correct torque specifications to prevent damage to the sensor or throttle body, then reconnect the electrical connector.
5. Calibration and Testing:We perform any required TPS calibration following manufacturer specifications. This may involve specific procedures outlined in the vehicle's service manual or using our diagnostic tools. After reconnecting the battery, we verify proper idle operation and throttle response.
6. Final Checks:Our technicians conduct a test drive to ensure smooth acceleration and deceleration. We perform a final diagnostic scan to verify the repair and confirm no warning lights are present.
7. Documentation:We maintain detailed records of all repairs, including part numbers and calibration settings, ensuring complete documentation of your vehicle's service history.
What is a Throttle Position Sensor (TPS) and what does it do

The Throttle Position Sensor (TPS) is an essential component in a vehicle's engine management system. It is typically mounted on the throttle body, which is part of the air intake system. The primary function of the TPS is to monitor the position of the throttle valve or butterfly valve, which regulates the amount of air entering the engine.Here's how it works and why it's important:
1. Functionality:The TPS provides real-time data to the engine control unit (ECU) about the position of the throttle. It measures the angle of the throttle valve, which corresponds to how much the accelerator pedal is being pressed by the driver.
2. Data Transmission:The sensor sends a variable voltage signal to the ECU. This signal changes as the throttle position changes, allowing the ECU to determine whether the throttle is closed, partially open, or fully open.
3. Engine Management:The information from the TPS is crucial for the ECU to make decisions about fuel injection, ignition timing, and other parameters that affect engine performance and efficiency. For example, when the throttle is opened, the ECU increases the fuel supply to match the increased air flow, ensuring optimal combustion.
4. Driveability and Emissions:A properly functioning TPS helps maintain smooth acceleration and deceleration, improves fuel efficiency, and reduces emissions. It ensures that the engine responds accurately to the driver's input.
5. Symptoms of a Faulty TPS:If the TPS malfunctions, it can lead to various issues such as erratic idling, poor acceleration, stalling, or even triggering the check engine light. Inconsistent throttle response can also occur, affecting the overall drivability of the vehicle.In summary, the Throttle Position Sensor is a component that helps ensure the engine runs smoothly and efficiently by providing accurate throttle position data to the vehicle's ECU.
How do I know I need to replace my Throttle Position Sensor (TPS)
Throttle Position Sensor (TPS) - Signs of Failure and Maintenance Guide
Common Signs of TPS Failure
1. Sudden Changes in Engine Speed
One of the most noticeable symptoms is unexpected acceleration or deceleration while maintaining a constant pedal position. The engine may surge or hesitate without driver input.
2. Check Engine Light
A malfunctioning TPS will often trigger the check engine light. When scanned, common trouble codes related to TPS include P0120, P0121, P0122, and P0123.
3. Poor Acceleration
You may experience delayed throttle response, hesitation during acceleration, or a complete lack of power when pressing the gas pedal.
4. Rough Idle
The engine might idle erratically or stall frequently when coming to a stop. This occurs because the ECU isn't receiving accurate information about the throttle position.
Maintenance Schedule
Regular Inspection: The TPS should be inspected during routine maintenance, typically every 60,000 miles or when symptoms occur.
Cleaning: The throttle body and TPS should be cleaned every 30,000 miles to prevent carbon buildup that can affect sensor readings.
Calibration: Some vehicles require TPS calibration after cleaning or replacement. This should be performed by a qualified technician using appropriate diagnostic equipment.
Replacement: There is no set replacement interval for a TPS. These sensors typically last the lifetime of the vehicle but should be replaced when they show signs of failure or after diagnostic testing confirms malfunction.
Important Note: If you experience any of these symptoms, it's recommended to have your vehicle diagnosed by a professional technician. Continuing to drive with a faulty TPS can lead to decreased fuel efficiency and potential engine damage.
How It Works
- Get a quote online or set-up a time to have your vehicle looked at.
- Pick time slots that work for you, easily, online.
- We will confirm appointments and send reminders.
- Our mechanics bring everything that is needed to you.
- All you have to do is provided a safe area for the work to be performed.
What we need from you
- A safe place to work on your vehicle
- No working on the side of busy roads
- No working on unstable or steep surfaces.
- We do not perform repairs during severe weather.
- Authorization from a property owner or management.
- Repair work done in a parking lot or at your requires permission.
- We do not do repairs in areas restricted by law.
Common Questions
Service Area
Our primary service area is greater Grand Rapids and includes Comstock Park, East Grand Rapids, Grandville, Kentwood, Walker, and Wyoming
Our secondary service area is provided by our Belding location and includes: Belding, Greenville, Ionia and the sorrounding areas.
Contact us if you have any questions about where we provide services.