Description
Throttle Body, Throttle Body Housing For Intake Air By VDO. For 1.8 16V And 2.0 16V Engines For Citroën And Peugeot. Tested, Fully Functional, Removed From A Vehicle With 123000 Km.
This VDO throttle body (throttle valve housing) is a direct-fit replacement for many Citroën and Peugeot vehicles equipped with 1.8 16V and 2.0 16V petrol engines. It controls the intake airflow to the engine, directly influencing idle stability, throttle response and engine load management. The unit is commonly referenced under OEM codes 9650787380 and 1635X0, which are frequently used by mechanics when searching for compatible parts.
Technical Information
- Manufacturer: VDO
- Model: Citroën C4 Picasso; Citroën C5; Peugeot 407 (Applicable To 1.8 16V And 2.0 16V Engine Variants)
- Product Codes: 9650787380, 1635X0
- Other Numbers: None Listed
Function And Benefits
The throttle body regulates the volume of air entering the intake manifold in response to driver input and engine control signals. A properly functioning unit ensures smooth idling, precise throttle response and correct air–fuel mixture for efficient combustion. Replacing a worn or contaminated throttle body restores drivability, reduces rough idle and prevents limp-home modes caused by throttle faults.
Compatibility And Fitment
Fits 1.8 16V and 2.0 16V petrol engines used in selected Citroën and Peugeot models. Common applications include Citroën C4 Picasso, Citroën C5 and Peugeot 407, but actual fitment depends on engine variant and production year. Entering the OEM product codes (9650787380, 1635X0) is the fastest way technicians search for the correct part.
Replacement Procedure (General Guide)
- Disconnect The Negative Battery Terminal Before Work To Prevent Unwanted Signals To The Engine Control Unit.
- Remove The Intake Hose And Any Associated Vacuum Lines Or Sensors Blocking Access To The Throttle Body.
- Unplug The Electrical Connector From The Throttle Body (Handle Connectors Carefully To Avoid Damage).
- Unscrew The Mounting Bolts And Remove The Throttle Body From The Intake Manifold. Inspect And Replace The Gasket If Necessary.
- Clean The Mating Surface On The Intake Manifold To Ensure A Proper Seal; Avoid Letting Debris Enter The Intake Tract.
- Install The Replacement Unit, Torque Bolts Evenly, Reconnect Electrical Connector And Hoses, Reattach Intake Hose.
- After Installation, Follow The Manufacturer Or ECU Relearning Procedure If Required (Idle Relearn Often Needed On Modern Engines).
Installation Recommendations
- Use A New Throttle Body Gasket Or Appropriate Sealant To Prevent Vacuum Leaks.
- Inspect And Clean The Air Intake And Mass Airflow Sensor As Part Of The Service To Reduce Future Contamination.
- Handle Electrical Connectors With Care; Corroded Or Bent Pins Cause Intermittent Faults.
- Reset Or Relearn Idle Following The Manufacturer Procedure If The ECU Requires It; Consult A Service Manual For Model-Specific Steps.
Why This Part Commonly Fails
Throttle bodies on petrol engines typically fail or cause drivability issues for reasons such as carbon and oil buildup on the throttle plate and bore, worn or failed electronic sensors/actuators (on drive-by-wire systems), or electrical connector corrosion. Dirt accumulation leads to sticking plates and unstable idle. Electrical faults lead to loss of position feedback and can trigger engine warning lights or limp mode. Regular intake maintenance reduces the likelihood of premature failure.
Notes For Mechanics And DIY Enthusiasts
When searching or ordering, use The OEM Codes 9650787380 and 1635X0 to ensure correct matching. This unit Was Removed From A Vehicle With 123000 Km And Is Described As Tested And Fully Functional. Verify Engine Variant And Mounting Interface Against The Vehicle Being Repaired Before Installation.
