Overview

This Delphi throttle valve (air metering unit) is designed for 1.6 HDi diesel engines used in Citroën and Peugeot models. The component regulates intake airflow and works with the engine management system to control idle, support EGR operation and ensure stable low-speed running. Supplied as an assembled unit, it replaces faulty or worn throttle valves that cause rough idle, loss of power or engine management warnings.

Benefits for Mechanics and DIY Enthusiasts

Clear, direct fitment to common 1.6 HDi applications makes this part suitable for quick replacement during routine diagnostics. Part numbers and OE references included in the technical section help you find exact matches and speed up ordering. As a technician-focused description, this listing highlights common failure modes and practical installation advice so you can return the vehicle to service reliably.

Technical information

• Manufacturer: Delphi
• Model: Fits 1.6 HDi applications (Citroën, Peugeot)
• Product codes: 9660030380, 0345E3
• Other numbers: 345000

Compatible Vehicles (Typical Fitment)

Commonly used on:

• Citroën C3
• Citroën C3 Picasso
• Peugeot 207
• Peugeot 307

How The Part Is Replaced

Basic replacement steps (overview): Disconnect the battery, remove intake hoses and airbox to access the throttle body, unplug electrical connectors, remove mounting bolts and extract the unit. Fit the new unit with a new gasket/seal, reconnect electrical plug and air intake components, then reconnect the battery. Follow manufacturer procedures for post-install checks—idle learning or adaptation may be required by the engine ECU.

Installation Recommendations

• Always Disconnect The Battery Before Starting Work To Avoid Damage To Electronics.
• Inspect And Replace The Intake Gasket/Seal When Fitting A New Unit.
• Check Wiring Harness And Connector For Corrosion Or Heat Damage; Repair As Necessary.
• After Installation, Perform Idle Adaptation/Throttle Learning Using Suitable Diagnostic Equipment If Required.
• Follow The Vehicle Manufacturer’s Service Procedures To Ensure Proper Function.

Why This Part Fails Most Often

Failures Are Usually Caused By Carbon And Soot Buildup From The Intake/EGR System, Which Restricts Movement Or Fouls Sensors. Other Common Causes Include Wear Or Failure Of The Actuator/Stepper Motor, Faulty Throttle Position Sensor, Electrical Connector Corrosion Or Mechanical Damage From Foreign Debris. Symptoms Include Rough Idle, Stalling, Reduced Engine Power And Engine Management Warning Lights.

Product Overview

This Delphi air metering unit (throttle valve / intake flap) is designed for Citroën and Peugeot 1.6 HDi diesel engines. The unit regulates bypass airflow through the intake tract to stabilise idle, support cold starts and assist the engine control unit in precise air metering during low-load conditions. Commonly searched by part numbers 9660030580 and 0345E7, this component is frequently replaced on high-mileage HDi engines where soot and carbon deposits impair valve movement or where the actuator/electronics fail.

Applications

Compatible With (Examples):

• Citroën Berlingo – 1.6 HDi
• Citroën Xsara Picasso – 1.6 HDi
• Peugeot Partner – 1.6 HDi

Note: Fitment depends on engine variant and production year. The part is often identified by its OE numbers during searches and spare-parts matching.

Technical Information

• Manufacturer: Delphi
• Model: Citroën Berlingo; Citroën Xsara Picasso; Peugeot Partner (1.6 HDi)
• Product Codes: 9660030580; 0345E7
• Other Numbers: 3450000000; NFP

Installation Recommendations

General replacement steps (for experienced technicians or competent DIYers):

• Park the vehicle on a level surface and allow the engine to cool.
• Disconnect the negative battery terminal before starting work.
• Remove air intake ducting and associated hoses to access the throttle/intake flap assembly.
• Unplug the electrical connector and any vacuum lines (note their routing).
• Unscrew the mounting bolts and remove the unit. Replace any gaskets or seals as required.
• Fit the new unit, reconnect electrical and vacuum connections, and reassemble intake components.
• After installation, follow the vehicle manufacturer’s recommended procedures for idle adaptation if applicable.

Use appropriate tools and observe the manufacturer’s torque and handling specifications. If uncertain, have the replacement performed by a qualified technician.

Why It Fails Most Often

• Carbon and Soot Build-Up: Diesel engines with EGR systems deposit soot that restricts valve movement.
• Mechanical Wear: Pivot points and linkages can seize or wear after many service miles.
• Electrical/Actuator Faults: Internal motor or position sensor failures stop correct flap positioning.
• Contamination And Moisture: Dirt ingress or moisture can corrode electrical contacts and mechanisms.

Typical Symptoms Of A Faulty Unit

• Unstable or High Idle, Especially When Cold
• Engine Stalling At Idle Or After Deceleration
• Illuminated Engine Warning Light Related To Air Intake Or Idle Control
• Reduced Driveability At Low Loads

Practical Tips

• Inspect intake hoses and vacuum lines for leaks when replacing the unit—air leaks often mimic flap faults.
• Cleaning may temporarily restore function if the mechanism is only lightly contaminated; however, replacement is recommended when the actuator or sensor is faulty.
• Search by OE numbers 9660030580 and 0345E7 when ordering spare parts to ensure quick matching.

This replacement intake throttle valve is designed for 1.6 HDi engines and carries OEM references commonly searched by mechanics and DIY enthusiasts. Ideal for workshops and home repairs on Citroën and Peugeot models, the unit helps restore proper air control to the engine, improving idle stability, throttle response and diesel emissions management. Searchable Part Numbers: 9655971780, 0345C2 — include these in your order or parts lookup to find the correct item quickly.

The throttle valve regulates the amount of intake air and works with the engine control system to manage idle, EGR flow and support DPF regeneration events in modern HDi common-rail diesels. A correct-functioning throttle body reduces rough idling, limp-home modes and error codes caused by incorrect air metering.

Technical Information

• Manufacturer: Delphi
• Model: 1.6 HDi (Fits Citroën C5, Peugeot 407 And Similar 1.6 HDi Applications)
• Product Codes: 9655971780; 0345C2
• Other Numbers: 0345C2 (Also Listed In Stellantis Parts References)

Installation Recommendations

• Disconnect The Negative Battery Terminal Before Starting Work To Avoid Unwanted Faults.
• Remove Intake Ducting And Unplug The Electrical Connector Carefully. Take Care Not To Damage Wiring Or Clips.
• Unbolt The Throttle Body From The Intake Manifold. Inspect And Clean The Mating Surface; Replace The Gasket If Required.
• Fit The New Unit, Tighten Bolts To The Manufacturer’S Torque Specifications, Reconnect Electrical Connector And Air Ducting.
• After Installation Perform A Throttle Relearn/Idle Adaptation Procedure Using Diagnostic Equipment Or Follow The Vehicle Manufacturer’S Relearn Steps To Clear Codes And Stabilize Idle.

Why This Part Commonly Fails

• Carbon And Soot Buildup From Exhaust Recirculation Causes Sticky Or Jammed Shaft Operation, Leading To Poor Airflow Control.
• Electronic Faults In The Position Sensor Or Actuator (Wear, Wiring Damage Or Corrosion) Result In Erratic Signals To The Engine Control Unit.
• Ingress Of Oil, Dirt Or Moisture Can Accelerate Mechanical Wear Or Cause Electrical Shorting.
• High Mileage And Long Periods Without Cleaning Or Service Increase The Likelihood Of Failure.

Replacing The Throttle Valve Is A Common Repair On 1.6 HDi Engines After Prolonged Use. Addressing The Root Causes—Cleaning Intake Tracts, Checking The EGR System And Ensuring Proper Air Filtration—Will Help Extend The Service Life Of The New Part.

If you are a skilled auto mechanic or a passionate DIY car enthusiast, this part is an ideal choice. It is highly sought after due to its specificity and perfect compatibility with selected Citroën and Peugeot models.

Technical Information:

• Manufacturer: DELPHI
• Models: Citroën C4, Citroën C4 Picasso, Peugeot 307
• Product Codes: 9660030480, 0345E4
• Additional Numbers: NFP

This auto part is essential for the proper functioning of the throttle mechanism that optimizes the air-fuel mixture entering the engine combustion chamber. Over time, throttle valves are subject to wear and tear. Regular inspection and replacement are critical to avoid costly engine damage.

Installation is straightforward for those familiar with common engine repairs; however, professional fitting is recommended to ensure correct positioning and operation of the throttle valve. As a vital component affecting engine performance, careful handling is crucial.

Whether you are a professional mechanic or a dedicated DIYer, this part is indispensable for restoring and maintaining your vehicle’s longevity. Choose quality and reliability with our product and ensure your Citroën or Peugeot runs like new.

The DELPHI throttle body for the 1.6 HDi range is a direct-fit intake throttle valve designed for Citroën and Peugeot diesel engines. It controls airflow to the engine and works together with the engine management system to regulate idle speed, load response and regeneration cycles. This part is commonly searched by OE numbers 9655971980 and 0345E5, so listing these codes helps technicians and DIY enthusiasts find the correct replacement quickly.

Application And Compatibility

Designed for 1.6 HDi engines used in a range of Citroën and Peugeot models, including (but not limited to): Citroën C4, Citroën C4 Picasso, Citroën C5, Peugeot 207, Peugeot 307 and Peugeot 308. Always verify engine type (1.6 HDi) and part number before installation.

Function And Typical Symptoms

The throttle body modulates intake airflow according to signals from the engine control unit. Common symptoms of a failing or contaminated throttle body include unstable idle, delayed throttle response, reduced engine performance, increased fuel consumption and fault codes related to throttle position or idle control. On diesel HDi engines, carbon deposits on the valve and bore are a frequent cause of poor operation.

Replacement Procedure (Overview)

• Park the vehicle on a level surface and allow the engine to cool.
• Disconnect the negative battery terminal to prevent electrical faults while working on the intake system.
• Remove the air intake ducting and filter housing to gain access to the throttle body.
• Disconnect electrical connector(s) and any vacuum/boost hoses attached to the throttle body. Label hoses if necessary for reassembly.
• Unbolt the throttle body from the intake manifold. Note that the lower mounting bracket on many used units may be deformed and require secure fitting (see note below).
• Clean mating surfaces, fit the new throttle body with a new gasket if applicable, and tighten bolts to manufacturer torque specifications.
• Reconnect hoses and electrical connectors, reassemble intake components, reconnect the battery and perform an idle relearn/engine adaptation procedure if required by the vehicle.

Maintenance And Lifespan

Throttle bodies on 1.6 HDi engines typically last many tens of thousands of kilometres but are prone to carbon build-up, especially on vehicles with long motorway use or irregular regeneration cycles. Regular inspection during service intervals and gentle cleaning (when applicable) can extend functional life. Electronic failures of the actuator or position sensor shorten service life and require replacement.

Technical Information

• Manufacturer: Delphi
• Model: 1.6 HDi
• Product Codes: 9655971980, 0345E5
• Additional Numbers: 34500000

Installation Recommendations

• Always disconnect the negative battery terminal before starting work to avoid electrical damage.
• Use new gaskets and ensure all mating surfaces are clean and free of oil/carbon.
• Inspect intake hoses and clamps; replace any brittle or leaking components to prevent future contamination.
• After fitting, perform an idle adaptation or throttle relearn if the vehicle manufacturer recommends it.
• If the supplied unit has a damaged lower mounting bracket (common on used parts), secure it properly during fitment — temporary tape is only a short-term measure; repair or replace the bracket where possible to ensure correct alignment and sealing.

Most Common Causes Of Failure

• Carbon and soot accumulation causing the throttle plate to stick or the bore to restrict airflow.
• Electrical faults in the actuator or position sensor (wear, moisture ingress or connector corrosion).
• Mechanical damage to the mounting bracket or flange (impact or improper removal), which can cause air leaks or misalignment.
• Contaminated intake air due to faulty filters or leaking hoses, accelerating deposit formation.

This description is tailored for professional mechanics and experienced DIY technicians looking for a reliable replacement throttle body for 1.6 HDi Citroën and Peugeot vehicles. Including the OE numbers 9655971980 and 0345E5 will help ensure accurate search results and correct part selection.

Product Overview

This intake throttle valve (throttle body) is a direct-fit Delphi unit for 1.6 HDi engines, commonly fitted to Citroën and Peugeot models. It regulates airflow in the intake tract to stabilise idle, assist EGR function and support smooth deceleration. The part is often searched for by its product codes 9657485480 and 0345E5, so listing these numbers in the order will help you find the correct replacement quickly.

Compatibility

• Citroën C4
• Citroën C4 Picasso
• Citroën C5
• Peugeot 207
• Peugeot 307
• Peugeot 308

Technical Information

• Manufacturer: Delphi
• Model: 1.6 HDi
• Product Codes: 9657485480, 0345E5
• Other Numbers: 34500000

Function And Symptoms

The throttle valve controls airflow through the intake manifold. In 1.6 HDi diesel engines it helps maintain stable idle, supports exhaust gas recirculation (EGR) control and contributes to engine braking behavior. When the valve or its actuator/potentiometer fails, common symptoms include rough idle, stalling, irregular throttle response, illuminated engine warning light and stored fault codes related to throttle/airflow.

Why This Part Fails Most Often

• Carbon and soot buildup in the throttle plate and housing, common on diesel engines, which restricts movement.
• Wear or failure of the electronic actuator or its position sensor (potentiometer), causing incorrect feedback to the ECU.
• Mechanical damage to the mounting bracket (the lower mounting bracket on many used units is often bent or damaged).
• Corrosion or water ingress affecting contacts and connectors.

Replacement Procedure (Overview)

• Prepare: Work on a cool engine in a well-ventilated area. Gather basic hand tools, torque wrench and, if available, a small throttle cleaner for inspection.
• Safety: Always disconnect the vehicle battery before starting to avoid short circuits and protect electronic components.
• Removal: Remove the intake hose and airbox as needed, unplug the electrical connector, remove mounting screws securing the throttle valve and extract the unit from the intake manifold.
• Installation: Fit the new unit, tighten mounting screws to manufacturer torque where specified, reconnect the electrical connector and intake hoses.
• Aftercare: Some vehicles require a throttle relearn or idle adaptation via diagnostic tool to restore correct idle and response. If you see fault codes after replacement, a diagnostic reset and adaptation may be necessary.

Installation Recommendations

• Disconnect the battery before any removal or installation and follow the vehicle manufacturer’s instructions to avoid damage.
• Check the lower mounting bracket on this part before fitting; if it is bent, secure it appropriately or replace the bracket to ensure correct alignment. Many used units show a bent lower bracket and may need temporary securing with tape during fitment.
• Do not force the throttle plate; ensure clean mating surfaces and correct gaskets/seals to prevent air leaks.
• After installation, clear stored faults and perform an idle adaptation if required by the vehicle.

Notes For Mechanics And DIYers

Part numbers 9657485480 and 0345E5 are commonly used to identify this Delphi throttle valve—include these codes when searching or ordering. Inspect related components such as intake hoses, vacuum lines and the EGR system when replacing the throttle valve, as soot or faults elsewhere can accelerate recontamination or cause recurring symptoms.

High-quality assembled air metering unit by Delphi engineered for the Citroën Xsara Picasso 1.6 HDi (80 kW). This direct-fit component helps restore correct idle control and air delivery in diesel HDi engines, making it an ideal replacement for professional workshops and DIY mechanics. Commonly searched under part numbers 9655971680 and 0345C0, this unit is a practical option when the original air dosing/throttle flap assembly malfunctions or causes unstable idle and emission issues.

Technical Information

• Manufacturer: Delphi
• Model: Citroën Xsara Picasso 1.6 HDi 80 kW
• Product Codes: 9655971680, 0345C0
• Additional Numbers: NFP

Compatibility

Designed for Citroën Xsara Picasso with the 1.6 HDi 80 kW engine. Frequently referenced by the OEM/PSA part numbers above. Check the physical shape, electrical connector and mounting points to confirm fitment when fitting to other variants.

Function

The air metering unit (air dosing/throttle flap assembly) regulates bypass airflow and intake metering for stable cold and idle running on HDi diesel engines. Controlled by the engine management system, it ensures correct air quantity for starting, idling stability and emissions control.

Replacement Procedure

• Disconnect the battery before starting work to avoid electrical damage and fault codes.
• Remove the intake ducting to gain access to the metering unit and unplug the electrical connector.
• Unscrew the mounting fasteners and carefully extract the unit, observing any seals or gaskets.
• Install the new unit, replace any damaged seals, tighten fasteners evenly, reconnect the electrical connector and reassemble intake ducts.
• After installation clear any related fault codes and perform idle relearn/adaptation if required by the engine ECU.

Installation Recommendations

• Always disconnect the battery before removal and follow manufacturer instructions to prevent damage.
• Inspect and, if necessary, replace intake hoses, clamps and sealing gaskets to avoid air leaks that can affect operation.
• Use proper diagnostic tools to clear fault codes and to run any required idle adaptation procedures after fitting.
• Work In A Clean Environment To Prevent Dirt Entering The Intake During Replacement.

Why The Part Most Frequently Fails

Failures are usually caused by carbon buildup and deposits that cause the flap or actuator to stick, electrical wear of the motor or position sensor, connector corrosion or wiring faults, and vacuum/air leaks in the intake tract. Symptoms include rough or unstable idle, difficulty starting, increased emissions and fault codes related to idle control.

Who Should Fit This Part

Suitable for experienced DIY mechanics and professional workshops. If you are not equipped with diagnostic tools for code clearing and idle adaptation, consider professional installation to ensure correct commissioning and engine behaviour.

Keywords

Delphi air metering unit, Citroën Xsara Picasso 1.6 HDi throttle body, 9655971680, 0345C0, air dosing valve, idle control valve

This Intake Throttle Valve is a Delphi-design replacement part for PSA 1.6 HDi engines fitted to Citroën and Peugeot models. Supplied under reference numbers 9649832580 and 0345C1, it controls intake airflow for idle stability and assists exhaust gas recirculation management on modern diesel engines. The unit is aimed at professional workshops and competent DIY mechanics who often search by part number for fast, accurate fitment.

Key Benefits

• Direct-fit replacement for many 1.6 HDi applications using OEM reference numbers 9649832580 / 0345C1.
• Restores proper idle control and helps maintain correct EGR operation.
• Quality Delphi construction designed for reliable electrical and mechanical operation.
• Useful for rapid identification by part number in workshop ordering systems.

Compatibility

Commonly fitted to PSA DV6 1.6 HDi diesel engines found in various Citroën and Peugeot models, including but not limited to: Peugeot 207, 307, 308, 3008, Partner; Citroën C3, C4, Berlingo. Always verify fitment using the part numbers 9649832580 or 0345C1 against the vehicle chassis or parts catalog before purchase.

Function And Typical Failure Modes

The throttle valve (throttle body) regulates intake airflow and provides the engine management system with a controlled restriction used for idle control and to support EGR function on diesel engines. Common causes of malfunction include carbon and soot buildup on the plate and bore, electrical failures in the actuator or position sensor, and mechanical wear. Symptoms of a failing unit can include unstable idle, rough starting, reduced drivability, or diagnostic fault codes related to throttle position or idle control.

Replacement & Installation Notes

Basic replacement steps for a competent technician or DIY mechanic:

• Disconnect the negative battery terminal before work to avoid electrical damage.
• Remove the intake ducting and any sensors or vacuum lines obstructing access to the throttle body.
• Unplug the electrical connector and remove mounting fasteners, then install the new unit in reverse order.
• Inspect and replace the throttle body gasket if required and ensure all vacuum/boost hoses are correctly reattached.
• After installation it is often necessary to perform throttle adaptation or an ECU relearn procedure using a diagnostic tool to restore correct idle and driveability.

Service Life

Service life depends on driving conditions and maintenance. Soot-prone urban driving and long intervals between intake cleaning can accelerate carbon buildup. Many units remain serviceable beyond 100,000 km, but symptoms or electrical faults typically indicate replacement is required.

Technical Information

• Manufacturer: Delphi
• Model: 1.6 HDi (PSA)
• Product Codes: 9649832580, 0345C1
• Additional Numbers: 0345C1 | 9649832580

If you are uncertain about fitment, provide your vehicle registration or VIN to confirm compatibility. This ensures you order the correct throttle valve for a smooth installation and reliable operation.