Vemo V22-72-0008 Sensor, crankshaft pulse

Vemo V22-72-0008 Sensor – Crankshaft Pulse Generator

The Vemo V22-72-0008 is a high‑precision crankshaft pulse sensor, also known in various markets as the Kurbelwellensensor, Impulsgeber, Kurbelwelle, or simply Crankshaft Pulse Generator. It is engineered to deliver reliable engine timing signals for a wide range of automotive applications, particularly within the Citroën and Peugeot families.

Core Functionality

This sensor converts mechanical rotation of the crankshaft into an electrical pulse train. The pulses are used by the engine control unit (ECU) to determine:

• Crankshaft position – essential for ignition timing and fuel injection.
• Engine speed (RPM) – critical for throttle management and idle control.
• Timing of the top dead centre (TDC) – enabling precise valve timing in variable‑valve‑timing systems.

The V22-72-0008 delivers a clean, square wave output with minimal jitter, ensuring accurate engine management even under high load or extreme temperature conditions.

Technical Specifications

Key Features and Benefits

• High Accuracy – The sensor’s three‑pole design reduces noise, providing the ECU with precise timing data.
• Robust Construction – Built to withstand harsh engine bay environments, including high vibration and thermal cycling.
• Low Power Consumption – Ideal for modern engines that demand efficient electrical usage.
• Wide Temperature Range – Operates reliably from deep winter (-40 °C) to hot summer conditions (+120 °C).
• Easy Integration – Standard connector and mounting options simplify replacement or upgrade processes.
• OEM Quality – Manufactured by Vemo, a trusted name in automotive sensor technology.

Installation Overview

While the exact procedure varies slightly between engine models, the general steps are consistent:

1. Disconnect the battery to prevent accidental short circuits.
2. Remove the old sensor by loosening the mounting bolts or unplugging the connector. Note any orientation marks for correct placement.
3. Clean the mounting surface with a solvent to remove oil, dirt, and debris.
4. Align the new V22-72-0008 sensor, ensuring that the polarity indicator matches the engine’s electrical system.
5. Tighten the bolts to the manufacturer’s torque specification (typically around 15 Nm).
6. Reconnect the connector and verify proper seating.
7. Re‑connect the battery and start the engine. Use a diagnostic scan tool to confirm that the ECU is receiving clean pulse signals.

Common Applications

The V22-72-0008 is widely used across several vehicle models, including but not limited to:

• CITROËN AX, BERLINGO SAXO, XSARA, ZX
• PEUGEOT 405 II (4B), 1.0‑1.6 L engines (1986–present)
• Various other Citroën and Peugeot platforms that require a reliable crankshaft pulse input.

Maintenance Tips

• Inspect the sensor’s connector for corrosion or loose pins; clean with contact cleaner if necessary.
• Avoid exposing the sensor to excessive oil spray, which can degrade signal quality over time.
• If engine performance issues arise (misfires, rough idle), consider checking the sensor as a potential root cause.

Conclusion

The Vemo V22-72-0008 Crankshaft Pulse Sensor is a cornerstone component for modern engine management systems. Its precise signal generation, durable construction, and broad compatibility make it an essential choice for technicians and automotive enthusiasts seeking reliable performance in Citroën and Peugeot engines.

By understanding its specifications, installation procedures, and maintenance requirements, users can ensure optimal engine operation and longevity.