Description
Product Overview
This throttle body assembly is a direct-fit replacement for Citroën and Peugeot petrol engines 1.8i, 1.8 16V, 2.0i and 2.0 16V. Supplied to match OE references 1635R4 and 1635V1, it controls intake airflow to ensure accurate throttle response and stable idling under varied load conditions.
Key Benefits
- Direct replacement for OE codes 1635R4 and 1635V1
- Restores precise air metering and improved throttle response
- Suitable for professional workshop fitment or competent DIY repairs
Fitment And Compatibility
Suitable for a range of Citroën and Peugeot models fitted with 1.8 and 2.0 petrol engines (1.8i, 1.8 16V, 2.0i, 2.0 16V). Always verify compatibility by cross-checking the vehicle VIN and part numbers before ordering to ensure correct fitment.
Replacement Procedure (Overview)
Basic replacement steps: disconnect the negative battery terminal; remove the air intake hose and intake resonator if applicable; unplug electrical connectors including throttle position sensors and actuators; loosen throttle body mounting bolts; remove the old unit and fit the new throttle body with a correct gasket; reconnect connectors and intake hose. Reconnect the battery and perform any ECU idle/throttle relearn or adaptation routine required by the vehicle. Always follow the vehicle manufacturer’s service instructions for torque values and initialization procedures.
Common Faults And Causes
Symptoms that indicate a failing or contaminated throttle body include rough idle, stalling at low rpm, poor or delayed throttle response, an illuminated engine management light and increased fuel consumption. Typical causes are carbon buildup on the throttle plate, worn shaft bearings, electrical faults in the throttle actuator or sensors, and vacuum or intake leaks.
Maintenance Tips
Regular inspection and careful cleaning of the intake tract and throttle plate with appropriate cleaners can slow carbon accumulation and extend service life. Check electrical connectors and wiring for corrosion, damage or poor contacts. After replacement, confirm the engine control unit completes any required throttle calibration or idle adaptation to avoid driveability issues.
Technical Information
- Manufacturer: PSA Citroën Peugeot
- Model: Engines 1.8i, 1.8 16V, 2.0i, 2.0 16V
- Product Codes: 1635R4, 1635V1
- Other Numbers: See product codes / cross-references
