1. Introduction
This manual provides detailed instructions for the installation, operation, and maintenance of the Middrivr Throttle Position Sensor (TPS), Model 171. This sensor is designed as a replacement component for various vehicle makes and models, ensuring accurate throttle position readings for optimal engine performance. Please read this manual thoroughly before installation and use.
2. Product Overview
The Middrivr Throttle Position Sensor is a critical component in your vehicle's engine management system. It monitors the throttle valve's position and sends this data to the Engine Control Module (ECM), influencing fuel injection and ignition timing. This sensor is constructed from durable ABS plastic with high-quality metal internals, offering resistance to high temperatures, corrosion, and water.
Figure 2.1: Front view of the Middrivr Throttle Position Sensor.
Figure 2.2: Product dimensions of the Throttle Position Sensor.
Figure 2.3: Detailed views of the sensor, highlighting its connector and mounting points.
Figure 2.4: Front and back views of the Throttle Position Sensor.
3. Compatibility
This Throttle Position Sensor is designed to replace OEM numbers 17123852, 17123855, 213-912, 213912, 213913, 213914, 2134668, 25319901, 3857487, 17113578, 17113625, 17125483, 17106809, 38574877, 88893282, 8171238520, 853678T, TH149, SS10382, TPS140. It is compatible with a wide range of vehicles. Please verify the OEM number of your original part before purchase to ensure correct fitment.
Compatible vehicle models include, but are not limited to:
Figure 3.1: Partial list of compatible vehicle models and years.
- Buick: Century, Regal, Skylark, Rendezvous
- Cadillac: Deville, Seville, Escalade
- Chevy: Silverado, Malibu, Monte Carlo, Blazer, Astro, Impala, Venture, Lumina, S10, Tahoe, Cavalier, C1500/K1500, C2500/K2500, C3500/K3500
- GMC: Savana, C1500, Yukon, Sonoma, Jimmy, Safari, Sierra
- Isuzu: Specific models may apply, refer to OEM cross-reference.
- Pontiac: Specific models may apply, refer to OEM cross-reference.
- Oldsmobile: Specific models may apply, refer to OEM cross-reference.
- Workhorse: Specific models may apply, refer to OEM cross-reference.
4. Function
The primary function of the Throttle Position Sensor is to detect the angular position of the throttle plate. This information is crucial for the ECM to accurately determine the engine's operating conditions, such as idle, load, acceleration, or deceleration. By providing precise throttle position data, the sensor helps the ECM optimize fuel delivery and ignition timing, contributing to efficient engine operation and performance.
Figure 4.1: Illustration of the sensor's main function in detecting engine conditions.
5. Installation
Warning: Before beginning any automotive repair, ensure the vehicle is safely supported, the engine is off, and the battery is disconnected to prevent accidental starting or electrical shock.
- Locate the Existing Sensor: Identify the current throttle position sensor on your vehicle's throttle body.
- Disconnect Wiring: Carefully disconnect the electrical connector from the old sensor.
- Remove Old Sensor: Unscrew or unclip the old sensor from the throttle body. Note its orientation.
- Install New Sensor: Position the new Middrivr Throttle Position Sensor in the same orientation as the old one. Secure it with the appropriate screws or clips. Ensure it is seated correctly.
- Reconnect Wiring: Reattach the electrical connector to the new sensor, ensuring a secure connection.
- Reconnect Battery: Reconnect the vehicle's battery.
- Test Functionality: Start the engine and check for proper operation. The engine light should not be illuminated, and idle speed should be stable.
No rewiring is typically required for this direct replacement part. If you are not experienced with vehicle repairs, professional installation is recommended.
6. Specifications
| Feature | Specification |
|---|---|
| Brand | Middrivr |
| Model Number | 171 |
| Manufacturer Part Number | mjqp2125 |
| Item Weight | 0.02 Kilograms (0.634 ounces) |
| Measurement Accuracy | ±1% |
| Measuring Range | 0% - 100% |
| Mounting Type | Flange Mount |
| Output Type | Push-Pull |
| Material | ABS Plastic Housing, High-Quality Metal Internals |
Figure 6.1: Key product characteristics and benefits.
7. Troubleshooting
If you experience issues after installing the Throttle Position Sensor, consider the following:
- Erratic Idle Speed: Ensure the sensor is correctly installed and the electrical connector is fully seated. A faulty or improperly installed sensor can cause an unstable idle.
- Check Engine Light: If the check engine light illuminates, retrieve diagnostic trouble codes (DTCs) using an OBD-II scanner. Codes related to the TPS (e.g., P0120, P0121) indicate a potential issue with the sensor or its circuit.
- High Fuel Consumption: An incorrect signal from the TPS can lead to the ECM miscalculating fuel requirements, resulting in increased fuel consumption. Verify sensor output using a multimeter if possible, or consult a professional.
- Incorrect Fitment: Double-check that the OEM part numbers match your original sensor to ensure full compatibility. As noted in customer feedback, some connectors may vary.
- Loose Connections: Inspect all wiring and connectors for damage, corrosion, or loose connections.
If problems persist after basic troubleshooting, it is advisable to consult a certified automotive technician.
8. Warranty and Support
For information regarding warranty coverage or technical support for your Middrivr Throttle Position Sensor, please refer to the product packaging or contact the seller directly. Keep your proof of purchase for any warranty claims.