Description
Throttle Body, Intake Throttle Body Housing VDO
For Engines 1.8 16V And 2.0 16V Citroën Peugeot
Tested, Fully Functional
Product Overview
This VDO throttle body assembly (throttle valve housing) is a direct-fit replacement for many Stellantis 1.8 16V and 2.0 16V petrol engines used in Citroën and Peugeot models. The unit controls air flow into the intake manifold and interfaces with the engine management system to regulate idle, transient response and overall engine torque. Commonly searched under part numbers 9650787380 and 1635X0, this throttle body is suitable for professional workshops and experienced DIY mechanics who maintain Citroën C4, C4 Picasso, C5 as well as Peugeot 307 and 407 models with the listed engines.
Technical Information
- Manufacturer: VDO
- Model: Citroën C4; Citroën C4 Picasso; Citroën C5; Peugeot 307; Peugeot 407
- Product Codes: 9650787380, 1635X0
- Additional Numbers: 123000
- Fitment Engines: 1.8 16V; 2.0 16V
Function And Benefits
The throttle body measures and controls the intake air volume entering the engine. Modern units integrate an electric motor/actuator and position sensor to provide precise control (drive-by-wire). A quality VDO unit ensures smooth idle, accurate throttle response and reliable communication with the engine ECU. Replacing a worn or malfunctioning throttle body restores engine drivability, reduces hesitation or stalling and can eliminate throttle-related fault codes.
Installation Recommendations
- Disconnect the negative battery terminal before beginning work to avoid electrical damage.
- Remove air intake hose and any sensors or vacuum lines that obstruct access to the throttle body.
- Unplug the electrical connector and unbolt the throttle body from the intake manifold. Keep gasket surface clean and replace the gasket if damaged.
- After installation, some vehicles require throttle adaptation/initialization using a diagnostic tool (throttle relearn). On certain PSA models adaptation via DiagBox/Lexia may be necessary to ensure correct idle and response.
- Recheck for air leaks at the intake flange and ensure all hoses and connectors are properly refitted.
Most Common Failure Reasons
Throttle bodies on these engines typically fail due to carbon and oil deposits that cause the throttle plate to stick or operate sluggishly. Electronic failures include faulty position sensors, actuator motor wear, or intermittent wiring/connectors. Symptoms include erratic idle, poor throttle response, limp-home mode or stored throttle-related fault codes. Driving conditions with frequent short trips and heavy idling accelerate carbon build-up.
Replacement Procedure (High-Level)
- Prepare: Park on level surface, engage parking brake, and disconnect the negative battery terminal.
- Access: Remove the air intake hose and any obstructing components to reach the throttle body.
- Disconnect: Unplug electrical connector(s) and any vacuum lines attached to the throttle body.
- Remove: Unscrew the mounting bolts and remove the throttle body from the intake manifold. Clean the mating surface.
- Install: Fit new gasket if required, mount the replacement throttle body, hand-tighten then torque bolts to manufacturer specification where available.
- Reassemble: Reconnect electrical connectors, hoses and air intake components. Reconnect the battery.
- Finalize: Perform throttle adaptation/initialization if required and clear related fault codes with a diagnostic tool. Verify idle and throttle response during a test run.
Compatibility And Notes
Fits engines: 1.8 16V and 2.0 16V used in selected Citroën and Peugeot models (Citroën C4, C4 Picasso, C5; Peugeot 307, 407). Common reference numbers: 9650787380, 1635X0. Always confirm engine code and part number match the vehicle’s requirements prior to installation. The unit supplied has been tested and is fully functional.
