HITACHI
12639694
Özellikleri Gör
SolenoidGasoline Direct Injection (GDI)Euro 56
HITACHI 12639694 Yüksek Basınç Pompası Chevy Equinox Malibu GMC 2.4L LEA
Motor platformu:GM 2.4L Ecotec SIDI DOHC 16V (LEA / LAF / LUK) →
OEM REFERANSI
12633494, 12633115, HPP0006, GDP102, HM10008, 12641847KONTROL VALFİ
-ENJEKTÖR MEMESİ
-RAİL BASINCI
150 barEMİSYONEuro 5 / Euro 6
GARANTİ12 Ay
02
Uyumlu Araçlar ve Motorlar
03
Teknik Özellikler
| Özellik | Değer |
|---|---|
| Part Number / SKU | 12639694 |
| Manufacturer Brand | HITACHI |
| Component Type | Mechanical High Pressure Fuel Pump (HPFP) |
| Engine Application | GM 2.4L Ecotec SIDI DOHC 16V (LEA / LUK / LAF) |
| Çalışma BasıncıTemel Değer | |
| Mounting Torque (Flange / Bracket) | 13 N-m (115 lb-in) |
| Fuel Line / Rail Torque | 30 N-m (22 lb-ft) |
| Tipik Arıza Kodları | P0087, P0088, P053F, P0171 |
04
Montaj İpuçları
- Depressurize Fuel System: Pull fuel pump fuse or disconnect LPFP harness. Crank engine 5-8 seconds until it stalls to drop residual rail pressure below 5 bar.
- Clean Surrounding Cavity: Blow compressed air around cylinder head bore or pump flange cavity to prevent dirt ingress into the fuel rail.
- Lubricate & Fit Seals: Inspect Teflon combustion seals or O-rings. Coat lightly with clean motor oil (do not use grease) to avoid tearing during insertion.
- Torque to Factory Specification: Hand-thread bolts evenly. Tighten mounting fasteners to 13 N-m (115 lb-in), and torque fuel line fittings to 30 N-m (22 lb-ft).
- Prime & Leak Check: Cycle ignition to RUN position 3 times (5 seconds each) to build low-side pressure. Inspect fittings for leaks before starting engine.
05
Ariza Kodlari (DTC) ve Teshis Protokolleri
Bu common rail enjektorunde asinma, devre arizasi veya kalibrasyon kaymasi olustugunda tetiklenen yaygin ariza kodlari (DTC):
P0087Critical
Fuel Rail / System Pressure Too Low
Excessive internal backleak from worn control valve seats drops common rail pressure below target under engine load.
P0201 - P0208High
Injector Circuit Malfunction / Open Circuit
Solenoid coil resistance drift (0.2-0.5 Ω) or piezo stack degradation triggers driver stage shutdown on affected cylinders.
P0300 / P0301+High
Cylinder Misfire & Balancing Deviation
Carbon-clogged nozzle spray holes or missing IMA calibration causes uneven cylinder contribution. Recode ECM and verify washer seating.
P0088High
Fuel Rail / System Pressure Too High
Spill line backpressure or stuck metering valve prevents rail depressurization, creating overpressure risks under load.
ATÖLYE PROTOKOLLERİ
Teknik Arıza Teşhis ve Servis Protokolleri
Bu parça grubu için doğrulanmış atölye prosedürleri, test eşik değerleri ve servis talimatları.
ATÖLYE COMMON RAIL ARIZA TEŞHİSİ
Teknik Kılavuzu OkuYüksek Basınç Pompası Arıza Teşhisi: P0087 ve Bosch CP4
COMMON RAIL ATÖLYE ARIZA TEŞHİSİ
Teknik Kılavuzu OkuYakıt Ölçüm Valfi IMV SCV Arıza Teşhisi: P0088 Test
OBD-II TEŞHİS PROTOKOLÜ
Teknik Kılavuzu OkuP0087 Düşük Rail Basıncı Teşhis Kılavuzu
COMMON RAIL SERVİS DİYAGNOSTİĞİ
Teknik Kılavuzu Oku