Description
Throttle body (intake) DELPHI 1.6 HDI for CITROËN and PEUGEOT vehicles. Most used units have a damaged lower mounting bracket – must be fastened with tape.
This genuine Delphi throttle body is designed for 1.6 HDi engines used in various Citroën and Peugeot models. It regulates intake airflow to the engine, works with the engine management system to control idle and acceleration, and is often searched for by OE numbers such as 9655971980 or 0345E5. The unit is a direct replacement for worn or malfunctioning throttle valves and is suitable for professional workshops and DIY mechanics who perform their own repairs.
Technical Information
- Manufacturer: Delphi
- Model: 1.6 HDi
- Product Codes: 9655971980, 0345E5
- Additional Numbers: 0345E5
Compatible Vehicles
Common applications include Citroën C4, Citroën C4 Picasso, Citroën C5 and Peugeot 207, Peugeot 307, Peugeot 308 with 1.6 HDi engines. Always verify the part number against the original unit before installation.
Installation Recommendations
- Disconnect the battery before starting work to prevent electrical damage and accidental actuator movement.
- Remove the intake hose and airbox to access the throttle body. Unplug the electrical connector and any vacuum lines.
- Unscrew the mounting bolts, remove the throttle body and clean the mating surface. Replace the gasket with a new one to ensure an airtight seal.
- Install the new unit, tighten bolts evenly to the manufacturer’s specified torque (refer to the service manual), reconnect vacuum lines and electrical connectors.
- After installation, perform throttle adaptation/idle relearn. This can be done with a diagnostic tool or following the manufacturer’s relearn procedure to ensure correct idle and throttle response.
- Note: Many used units have a damaged lower mounting bracket; temporary fastening with tape is sometimes necessary, but a properly repaired or new bracket is recommended for a durable fit.
Why It Fails
- Carbon and soot buildup in the intake and on the throttle plate, restricting movement and upsetting idle control.
- Failure of the throttle position sensor or electronic actuator, causing incorrect position feedback to the ECU.
- Corroded or damaged electrical connectors and wiring, leading to intermittent faults.
- Vacuum leaks at the gasket or intake connections, producing unstable idle and poor drivability.
- Mechanical damage to the mounting bracket (common on used parts), requiring reinforcement or replacement.
Symptoms of a Faulty Throttle Body
- Rough or fluctuating idle
- Reduced throttle response or hesitation under acceleration
- Stalling at idle or when coming to a stop
- Illuminated engine warning light with related fault codes
- Vehicle entering limp mode
Maintenance and Practical Tips
Regular inspection and cleaning of the throttle body and intake tract during scheduled services help prolong service life. Depending on driving conditions and maintenance, issues commonly appear from around 80,000 km onward, though heavily soot-contaminated engines can show problems earlier. When replacing a damaged used unit, consider repairing or replacing broken mounting brackets to avoid recurrent issues.
Replacement Advice for Mechanics and DIYers
This part is suitable for experienced technicians and competent DIYers. Keep replacement gaskets and basic hand tools ready, and use a diagnostic tool to clear faults and perform idle/throttle adaptations after installation. For the best long-term result fit a unit with an intact mounting bracket or reinforce the bracket properly rather than relying on temporary fixes.
