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Walker 235-91131 Engine Crankshaft Position Sensor
| Brand | Walker 235-91131 |
|---|---|
| Color | Black |
| Connector Gender | Male |
| Connector Quantity | 1 |
| Mounting Bracket Included | Yes |
| Mounting Hole Quantity | 2 |
| Product line | Walker Products FSK |
| Fits | Buick, Chevrolet, Pontiac, and Oldsmobile · 43 vehicles |
OE-standard quality. Built to meet or exceed OEM specifications.
Engine sensor. Measures crankshaft position for precise engine management.
Mounting bracket included. Simplifies installation with the needed bracket already provided.
Cross-references Four Seasons 96141, Spectra Premium S10073 and Standard Ignition PC82 for the same application. See all 16.
Engine Crankshaft Position Sensor Overview
Walker Products FSK 235-91131 is an engine crankshaft position sensor built for precise crankshaft signal input and reliable engine management. It is a direct-fit replacement for select Buick, Chevrolet, Oldsmobile, and Pontiac applications, including Buick Century and Chevrolet Impala models.
Walker Products FSK focuses on engine management components engineered to meet or exceed OEM standards, with product support backed by in-house manufacturing, engineering, and technical resources.
Key Features
- Engine crankshaft position sensor for ignition and engine timing input
- Black housing with 1 male connector
- 2 mounting holes with mounting bracket included
- Direct-fit application coverage for select GM vehicles
- Walker Products FSK part number 235-91131
Detailed Product Information
This crankshaft position sensor monitors crankshaft position and rotational speed so the engine control system can manage spark timing and fuel delivery. The Walker Products FSK 235-91131 is listed for 1997-2005 Buick Century, 2000-2005 Chevrolet Impala, 1997-2005 Chevrolet Monte Carlo, 1997-2003 Pontiac Grand Prix, 1997-2001 Chevrolet Lumina, 1997-1998 Buick Skylark, 1997-1998 Pontiac Grand Am, and 1997 Oldsmobile Cutlass Supreme. Fitment notes include rear of the engine harmonic balancer on most applications and timing cover placement on the 1997 Oldsmobile Cutlass Supreme.
Walker Products has supplied fuel system and engine sensor components since 1946 and manufactures engine management parts for the automotive aftermarket. Part number 235-91131 is also referenced against Four Seasons 96141, Spectra Premium S10073, Standard Ignition PC82, and US Motor Works 22176 for the same application.
What It Helps Resolve
- Crankshaft position signal loss
- Hard starting or extended crank time
- Intermittent stalling or engine cut-out
- Misfire or timing-related drivability concerns
- Check engine light conditions tied to crank sensor faults
Installation Notes and Tips
Verify the connector style, mounting hole layout, and sensor location before installation. On listed applications, the sensor mounts at the rear of the engine harmonic balancer, while the 1997 Oldsmobile Cutlass Supreme uses timing cover placement. Clean the mounting surface and inspect the harness connector for corrosion or damage before connecting the new sensor.
Quality Assurance
Walker Products FSK is an ISO 9001/IATF 16949 certified product line focused on OEM-level manufacturing control, application accuracy, and technical support. The 235-91131 crankshaft position sensor is produced to meet or exceed OEM standards and specifications.
| Year | Make | Model | Liters | Cylinders | Fuel Type | Position | Notes |
|---|---|---|---|---|---|---|---|
| 2005 | Buick | Century | 3.1L | V6 | GAS | N/A | Engine Crankshaft Position Sensor fits at the rear of the engine harmonic balancer.; Walker Products FSK |
| 2005 | Chevrolet | Impala | 3.4L | V6 | GAS | N/A | Engine Crankshaft Position Sensor fits at the rear of the engine harmonic balancer.; Walker Products FSK |
| 2005 | Chevrolet | Monte Carlo | 3.4L | V6 | GAS | N/A | Engine Crankshaft Position Sensor fits at the rear of the engine harmonic balancer.; Walker Products FSK |
| 2004 | Buick | Century | 3.1L | V6 | GAS | N/A | Engine Crankshaft Position Sensor fits at the rear of the engine harmonic balancer.; Walker Products FSK |
| 2004 | Chevrolet | Impala | 3.4L | V6 | GAS | N/A | Engine Crankshaft Position Sensor fits at the rear of the engine harmonic balancer.; Walker Products FSK |
| 2004 | Chevrolet | Monte Carlo | 3.4L | V6 | GAS | N/A | Engine Crankshaft Position Sensor fits at the rear of the engine harmonic balancer.; Walker Products FSK |
| 2003 | Buick | Century | 3.1L | V6 | GAS | N/A | Engine Crankshaft Position Sensor fits at the rear of the engine harmonic balancer.; Walker Products FSK |
| 2003 | Chevrolet | Impala | 3.4L | V6 | GAS | N/A | Engine Crankshaft Position Sensor fits at the rear of the engine harmonic balancer.; Walker Products FSK |
| 2003 | Chevrolet | Monte Carlo | 3.4L | V6 | GAS | N/A | Engine Crankshaft Position Sensor fits at the rear of the engine harmonic balancer.; Walker Products FSK |
| 2003 | Pontiac | Grand Prix | 3.1L | V6 | GAS | N/A | Engine Crankshaft Position Sensor fits at the rear of the engine harmonic balancer.; Walker Products FSK |
| 2002 | Buick | Century | 3.1L | V6 | GAS | N/A | Engine Crankshaft Position Sensor fits at the rear of the engine harmonic balancer.; Walker Products FSK |
| 2002 | Chevrolet | Impala | 3.4L | V6 | GAS | N/A | Engine Crankshaft Position Sensor fits at the rear of the engine harmonic balancer.; Walker Products FSK |
| 2002 | Chevrolet | Monte Carlo | 3.4L | V6 | GAS | N/A | Engine Crankshaft Position Sensor fits at the rear of the engine harmonic balancer.; Walker Products FSK |
| 2002 | Pontiac | Grand Prix | 3.1L | V6 | GAS | N/A | Engine Crankshaft Position Sensor fits at the rear of the engine harmonic balancer.; Walker Products FSK |
| 2001 | Buick | Century | 3.1L | V6 | GAS | N/A | Engine Crankshaft Position Sensor fits at the rear of the engine harmonic balancer.; Walker Products FSK |
| 2001 | Chevrolet | Impala | 3.4L | V6 | GAS | N/A | Engine Crankshaft Position Sensor fits at the rear of the engine harmonic balancer.; Walker Products FSK |
| 2001 | Chevrolet | Lumina | 3.1L | V6 | GAS | N/A | Engine Crankshaft Position Sensor fits at the rear of the engine harmonic balancer.; Walker Products FSK |
| 2001 | Chevrolet | Monte Carlo | 3.4L | V6 | GAS | N/A | Engine Crankshaft Position Sensor fits at the rear of the engine harmonic balancer.; Walker Products FSK |
| 2001 | Pontiac | Grand Prix | 3.1L | V6 | GAS | N/A | Engine Crankshaft Position Sensor fits at the rear of the engine harmonic balancer.; Walker Products FSK |
| 2000 | Buick | Century | 3.1L | V6 | GAS | N/A | Engine Crankshaft Position Sensor fits at the rear of the engine harmonic balancer.; Walker Products FSK |
| 2000 | Chevrolet | Impala | 3.4L | V6 | GAS | N/A | Engine Crankshaft Position Sensor fits at the rear of the engine harmonic balancer.; Walker Products FSK |
| 2000 | Chevrolet | Lumina | 3.1L | V6 | GAS | N/A | Engine Crankshaft Position Sensor fits at the rear of the engine harmonic balancer.; Walker Products FSK |
| 2000 | Chevrolet | Monte Carlo | 3.4L | V6 | GAS | N/A | Engine Crankshaft Position Sensor fits at the rear of the engine harmonic balancer.; Walker Products FSK |
| 2000 | Pontiac | Grand Prix | 3.1L | V6 | GAS | N/A | Engine Crankshaft Position Sensor fits at the rear of the engine harmonic balancer.; Walker Products FSK |
| 1999 | Buick | Century | 3.1L | V6 | GAS | N/A | Engine Crankshaft Position Sensor fits at the rear of the engine harmonic balancer.; Walker Products FSK |
| 1999 | Chevrolet | Lumina | 3.1L | V6 | GAS | N/A | Engine Crankshaft Position Sensor fits at the rear of the engine harmonic balancer.; Walker Products FSK |
| 1999 | Chevrolet | Monte Carlo | 3.1L | V6 | GAS | N/A | Engine Crankshaft Position Sensor fits at the rear of the engine harmonic balancer.; Walker Products FSK |
| 1999 | Pontiac | Grand Prix | 3.1L | V6 | GAS | N/A | Engine Crankshaft Position Sensor fits at the rear of the engine harmonic balancer.; Walker Products FSK |
| 1998 | Buick | Century | 3.1L | V6 | GAS | N/A | Engine Crankshaft Position Sensor fits at the rear of the engine harmonic balancer.; Walker Products FSK |
| 1998 | Buick | Skylark | 3.1L | V6 | GAS | N/A | Engine Crankshaft Position Sensor fits at the rear of the engine harmonic balancer.; Walker Products FSK |
| 1998 | Chevrolet | Lumina | 3.1L | V6 | GAS | N/A | Engine Crankshaft Position Sensor fits at the rear of the engine harmonic balancer.; Walker Products FSK |
| 1998 | Chevrolet | Monte Carlo | 3.1L | V6 | GAS | N/A | Engine Crankshaft Position Sensor fits at the rear of the engine harmonic balancer.; Walker Products FSK |
| 1998 | Pontiac | Grand Am | 3.1L | V6 | GAS | N/A | Engine Crankshaft Position Sensor fits at the rear of the engine harmonic balancer.; Walker Products FSK |
| 1998 | Pontiac | Grand Prix | 3.1L | V6 | — | N/A | Engine Crankshaft Position Sensor fits at the rear of the engine harmonic balancer.; Walker Products FSK |
| 1998 | Pontiac | Grand Prix | 3.1L | V6 | GAS | N/A | Engine Crankshaft Position Sensor fits at the rear of the engine harmonic balancer.; Walker Products FSK |
| 1997 | Buick | Century | 3.1L | V6 | GAS | N/A | Engine Crankshaft Position Sensor fits at the rear of the engine harmonic balancer.; Walker Products FSK |
| 1997 | Buick | Skylark | 3.1L | V6 | GAS | N/A | Engine Crankshaft Position Sensor fits at the rear of the engine harmonic balancer.; Walker Products FSK |
| 1997 | Chevrolet | Lumina | 3.1L | V6 | GAS | N/A | Engine Crankshaft Position Sensor fits at the rear of the engine harmonic balancer.; Walker Products FSK |
| 1997 | Chevrolet | Monte Carlo | 3.1L | V6 | GAS | N/A | Engine Crankshaft Position Sensor fits at the rear of the engine harmonic balancer.; Walker Products FSK |
| 1997 | Oldsmobile | Cutlass Supreme | 3.1L | V6 | — | N/A | Timing Cover Placement; Walker Products FSK |
| 1997 | Pontiac | Grand Am | 3.1L | V6 | GAS | N/A | Engine Crankshaft Position Sensor fits at the rear of the engine harmonic balancer.; Walker Products FSK |
| 1997 | Pontiac | Grand Prix | 3.1L | V6 | — | N/A | Engine Crankshaft Position Sensor fits at the rear of the engine harmonic balancer.; Walker Products FSK |
| 1997 | Pontiac | Grand Prix | 3.1L | V6 | GAS | N/A | Engine Crankshaft Position Sensor fits at the rear of the engine harmonic balancer.; Walker Products FSK |
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