williams controls 131973 Sensor
The Williams Controls 131973 is a heavy-duty, solid-state throttle position sensor designed specifically for throttle/accelerator pedal applications in commercial trucks, buses, and off-road equipment. It provides dual redundant output signals proportional to pedal position, ensuring safety and reliability in critical vehicle control systems.
Technical Specifications
131973 pedal sensor
| Parameter | Details |
|---|---|
| Part Number | williams 131973 |
| Alternative Names | Accelerator Pedal Position Sensor (APS), Throttle Position Sensor (TPS) |
| Primary Application | Heavy-duty trucks, medium-duty commercial vehicles (on-highway/off-road) |
| Operating Voltage | 5V DC (regulated input, compatible with 12V/24V vehicle electrical systems) |
| Signal Output | Dual redundant outputs |
| Repeatability | ±0.1% of full scale |
Interchangeable Part Numbers
williams 131973
| Parameter | Part Number |
|---|---|
| Navistar | 2603893C91, 2507256C91,2586248C91 |
| Ford | 8C40-9F832-BA, 8C409F832BA |
| Volvo OEM | 85101350 |
| PACCAR | 8C40-9F832-BA |
| Kenworth | 134143 |
Aftermarket replacement part codes: Dorman 977-023, ACDelco 213-4635,Bosch 0280122031X, Freightliner WIL131973, 94600-8C100
Williams Controls Part Numbers Explained
- 133284 – WCS-133284 is Original Williams TPS part number, used across multiple OEMs
- 131973 – Williams supersession of 131040, with improved durability and electrical interface, Compatible with: Freightliner WIL131973, PACCAR 131973, Navistar 2587164C91
- 134030 – Williams variants with different mounting configurations
- 134143 – Williams variants with different mounting
- 134734 – Williams variants with different mounting
- 132354- Williams control throttle pedal sensor variants 132354
Ready to Impletment in Your Application?
Our applications engineers work with you to design the optimal solution for yourspecific requirements, Get expert consultation and custom configuration support.
Request a Quote
Get a customized solution for your application！
FAQ
international 133284-2603893c91
Are WCS-133284, 2603893C91, and 8C40-9F832-BA interchangeable?
Yes, these part numbers are cross-compatible for specific heavy-duty/medium-duty commercial vehicles:
WCS-133284 (Williams Controls) is a direct replacement for Navistar 2603893C91.
8C40-9F832-BA (Ford OEM) works with Navistar/Volvo vehicles using Navistar-sourced powertrains.
All three share the same 5V operating voltage, 0.5V–4.5V signal output, and all are 6-pin AMP connector (see: 6 pin accelerator pedal position sensor wiring diagram).
Do TPS parts like N8894090 or 8C40-9F832-BA require calibration after installation
Yes, mandatory calibration is required for all these TPS models to ensure signal accuracy:
Tools: Use OEM-specific software (Navistar ServiceMaxx for N8894090, Ford IDS for 8C40-9F832-BA, Cummins INSITE for WCS-133284).
Calibration targets: 0.50V ±0.02V (idle) and 4.50V ±0.02V (WOT).
Validation: Perform 3 full throttle cycles (idle→WOT→idle) to confirm linear signal response.
Exception: No calibration needed for exact OEM replacements if the ECU retains previous settings (rare for heavy-duty vehicles).
Which vehicles are compatible with N8894090, and is it backward-compatible with older Navistar models?
N8894090 is a 2018+ Navistar OEM TPS with limited backward compatibility:
Compatible models: Navistar ProStar/LoneStar/WorkStar (2018–2024), CV/MV Series (2019–2024) with MaxxForce/Cummins engines.
Backward compatibility: Not directly compatible with pre-2018 Navistar vehicles. Use adapter harness P/N 1825406C92 for conversion.
Key difference from predecessor (2603893C91): Gold-plated connector contacts, integrated signal filtering
