28602948 — Technical Research
Delphi solenoid common-rail injector for the PSA DW10 2.0 HDi/BlueHDi engine, also used by Ford as 2.0 TDCi/EcoBlue. PSA OE 9674984080; Ford OE DS7Q-9F593-BA. Requires the Delphi C3I 20-character calibration code to be programmed to the ECU on fitting. Key symptoms: Crank but no start (often after fuel-system work or running low on fuel); Hard starting when cold; Misfire / rough idle; Loss of power / limp mode. Common failure modes: Excessive back-leakage; Sticking injector at low rail pressure; Nozzle coking / poor atomisation.
Delphi 28602948 2.0 BlueHDi / TDCi (DW10) Common Rail Injector
Delphi solenoid common-rail injector for the PSA DW10 2.0 HDi/BlueHDi engine, also used by Ford as 2.0 TDCi/EcoBlue. PSA OE 9674984080; Ford OE DS7Q-9F593-BA. Requires the Delphi C3I 20-character calibration code to be programmed to the ECU on fitting. Key symptoms: Crank but no start (often after fuel-system work or running low on fuel); Hard starting when cold; Misfire / rough idle; Loss of power / limp mode. Common failure modes: Excessive back-leakage; Sticking injector at low rail pressure; Nozzle coking / poor atomisation.
A leaking/sticking Delphi injector bleeds rail pressure during cranking so the engine cannot reach firing pressure.
Excessive back-leakage lowers cranking rail pressure.
An out-of-balance injector under/over-fuels its cylinder.
Rail-pressure or injector-correction faults trigger ECU derate.
Poor atomisation from worn nozzle.
Incorrect delivery timing/quantity.
- InstallationProgramme the Delphi C3I 20-character calibration code into the ECU after fitting, or the engine will run rough / may not start correctly.
- MisdiagnosisA crank-no-start after fuel filter changes is frequently air ingress or a stuck injector at low pressure, not a dead ECU - check rail pressure during cranking first.
- InstallationAlways renew the copper sealing washer and torque the clamp to spec; clean the injector bore to prevent combustion blow-by.
- TestingTest on a Delphi-capable common-rail bench; read live injector correction values before removal to find the weak cylinder.
What is Delphi injector 28602948?+
A Delphi solenoid common-rail diesel injector for the PSA DW10 2.0 HDi/BlueHDi engine, also used by Ford as 2.0 TDCi/EcoBlue. PSA OE is 9674984080 and Ford OE is DS7Q-9F593-BA.
Which engine does 28602948 fit?+
The 2.0-litre DW10 family (DW10FD, DW10FC, DW10CTED4, DW10FE) used by Peugeot, Citroen and Ford.
What vehicles use this injector?+
Peugeot 308/3008/5008/508/Expert, Citroen C4/C5/Berlingo/Jumpy/SpaceTourer, and Ford Focus/Mondeo/Kuga/S-Max/Edge/Transit 2.0 diesel.
Is 28602948 the same as 28388960?+
Yes, 28388960 is an equivalent Delphi number for the same injector; 9674984080 is the PSA OE reference.
Do I need to code the injector after fitting?+
Yes. Delphi injectors carry a 20-character C3I calibration code that must be programmed into the ECU on replacement.
Why won't my 2.0 HDi start after a fuel filter change?+
Air ingress or a stuck injector at low rail pressure is common on DW10. Check cranking rail pressure and bleed the system before condemning the injector.
What are the symptoms of a failing 28602948?+
Crank-no-start, hard cold starting, misfire, power loss/limp mode, black smoke and higher fuel consumption.
Is this a solenoid or piezo injector?+
It is a solenoid common-rail injector.
Can I test it on a Bosch bench?+
No - it must be tested on a Delphi-capable common-rail bench that can also read/write the C3I code.
Should I replace one or all four injectors?+
Diagnose with live correction values and a bench test; replace individually if others are in spec, but check all four on high-mileage engines.
Why replace the copper washer every time?+
It is a one-use crush seal; reusing it risks combustion blow-by and carbon build-up around the injector base.
Does a reconditioned 28602948 perform like new?+
A properly remanufactured unit is stripped, worn parts replaced, then bench-tested and recalibrated to the Delphi plan to meet original delivery and back-leakage specs.