0261520152
BOSCH 0261520152 Yüksek Basınç Pompası Ford 2.0 EcoBoost Evoque
AG9Z-9350-B, BB5E-9D376-BA, LR025597, LR038311, 31359815, AG9Z9350BIntegrated PWM Fuel Volume Control Valve-150-200 barÜrüne Genel Bakış
The Bosch 0261520152 (Ford OE AG9Z-9350-B, Land Rover LR025597, Volvo 31359815) is the primary HDP-5 mechanical high-pressure fuel pump for 2.0L EcoBoost, Si4, and T5 direct-injection engines. Driven directly by the exhaust camshaft via a precision follower tappet bucket, this compact unit delivers rail pressures between 150 and 200 bar across high-demand turbocharged operating ranges. Installed on millions of vehicles including the Ford Focus ST, Edge, Explorer, Range Rover Evoque, and Volvo XC60, this pump eliminates chronic acceleration hesitation, warm restart refusal, and limp-mode power cuts triggered by internal plunger leak-down.
CAM FOLLOWER BUCKET WEAR & DEFAULT BYPASS DIAGNOSIS: Always inspect the flat cam follower tappet bucket (7T4Z-6C535-AA) when servicing pump 0261520152. High-mileage EcoBoost engines can wear through the hardened follower base, grinding the camshaft lobe and sending metal debris through the valvetrain. If the metering solenoid harness is unplugged or severed, this pump defaults to pure bypass mode (~5 bar low pressure), limiting vehicle speed to 30 mph with DTC P0087.
Uyumlu Araçlar ve Motorlar
| Araç | Motor | Model Yılları |
|---|---|---|
| Ford Focus ST / Edge / Explorer 2.0 | Ford 2.0L & 2.3L EcoBoost (DOHC 16V GTDI Twin-Scroll Turbo) | 2012-2019 |
| Land Rover Range Rover Evoque / Discovery Sport | Ford 2.0L & 2.3L EcoBoost (DOHC 16V GTDI Twin-Scroll Turbo) | 2012-2018 |
| Volvo S60 / V60 / XC60 2.0 T5 | Ford 2.0L & 2.3L EcoBoost (DOHC 16V GTDI Twin-Scroll Turbo) | 2011-2015 |
Teknik Özellikler
| Özellik | Değer |
|---|---|
| Pump Technology | Bosch HDP-5 Radial Single-Plunger Mechanical Pump |
| Maximum System Rail PressureTemel Değer | |
| Idle Base Pressure | 30-40 bar (435-580 psi) |
| Actuation Mechanism | Exhaust Camshaft Dedicated Cam Lobe |
| Cam Follower Type | Flat Tappet Follower Bucket (Ford 7T4Z-6C535-AA) |
| Integrated Component | Electronic Pressure Control Metering Valve |
| Flange Fastener Torque | 10 N·m (Torx M6, alternating two-step torque) |
| High Pressure Output Line Nut Torque | 28-30 N·m (Counter-hold body adapter) |
| Tightening Torque | 28-30 N·m |
| Enjektör Baskı Çatalı Torku | 10 N·m |
| Default Safety Pressure Mode | Mechanical bypass ~5 bar in unpowered solenoid state |
| Çalışma BasıncıTemel Değer |
Uyumlu Yüksek Basınç Pompası (Yakıt Devresi Grubu)
Aynı yüksek basınçlı Common Rail devresinde çalışır. Düşük basınç (P0087) teşhisinde enjektörleri değiştirmeden önce pompa debisini kontrol edin.
Montaj İpuçları
Gerekli ekipmanlar: 8mm socket, 17mm flare nut wrench, and 19mm backup wrench, Calibrated torque wrench (5-30 N·m), New cam follower tappet (Ford OE 7T4Z-6C535-AA) and Viton housing O-ring, OBD-II scanner for monitoring live high-pressure fuel rail telemetry
- Depressurize fuel system: pull the fuel pump fuse, crank engine for 5 seconds until it fails to start, then disconnect the negative battery terminal.
- Remove the engine beauty cover and unbolt the steel acoustic heat shield covering the high-pressure pump atop the cylinder head.
- Disconnect the 2-pin electrical connector from the fuel volume regulator solenoid on the top of the pump.
- Counter-hold the pump outlet hex fitting with a 19mm wrench and loosen the 17mm high-pressure line flare nut; catch escaping fuel with absorbent rags.
- Disconnect the quick-connect low-pressure supply line fitting from the pump inlet nipple.
- Loosen the two 8mm mounting bolts evenly in alternating quarter-turns to release internal plunger spring compression without binding the bore.
- Remove the old pump assembly; use a magnet tool to extract the flat cam follower tappet bucket from the cylinder head pocket.
- Examine the follower base for dishing, galling, or black coating wear-through; examine the camshaft lobe surface for scoring.
- Coat a new cam follower bucket (7T4Z-6C535-AA) with clean synthetic engine oil and slide it into the cylinder head bore, verifying smooth travel.
- Lubricate a new Viton O-ring with clean oil and install it onto the 0261520152 pump body.
- Rotate the engine until the camshaft drive lobe is on base circle (lowest point); slide the pump in and hand-tighten both 8mm bolts.
- Torque both mounting bolts alternately and incrementally to 10 N·m.
- Hand-thread the high-pressure line flare nut, counter-hold the pump body adapter with a 19mm wrench, and torque the line nut to 28-30 N·m.
- Reattach low-pressure quick-connect line, plug in solenoid harness, reconnect battery, cycle ignition key 3 times to prime, and check for leaks.
- Cam Follower Bucket Dishing Check: Never reinstall a follower bucket that exhibits a concave depression on its bottom face. Even 0.5mm of wear reduces maximum pump plunger stroke, preventing the pump from meeting 150+ bar rail pressure under wide-open throttle and causing chronic P0087 codes.
- Opposing Wrench Rule: The high-pressure outlet fitting on pump 0261520152 is threaded into the aluminum body. Always use a 19mm backup wrench on the pump fitting while torquing the 17mm steel pipe flare nut to 28-30 N·m to prevent stripping the body threads.
- Base Circle Alignment: If you feel heavy spring resistance while threading the mounting bolts, STOP immediately. Rotate the crankshaft until the camshaft lobe moves away from top dead center to avoid bending the mounting ears.
Sıkça Sorulan Sorular
What trouble codes point to a failing 0261520152 fuel pump on Ford 2.0 EcoBoost?
The primary fault code is P0087 (Fuel Rail/System Pressure Too Low). Additional codes include P0171 (System Too Lean Bank 1), P0088 (Rail Pressure Too High if the control valve sticks), and P053F (Cold Start Fuel Pressure Plausibility).
How does the pump behave if the electrical solenoid loses power?
The integrated volume control valve is a normally-open solenoid. Without 12V pulse-width modulated (PWM) ground control from the PCM, the pump defaults to mechanical bypass mode, delivering only low-pressure lift pump pressure (~5 bar). The vehicle will enter severe limp mode limited to roughly 30-35 mph.
Is the Land Rover Range Rover Evoque pump identical to the Ford Focus ST pump?
Yes. The 2.0L Si4 engine in the Range Rover Evoque and Discovery Sport is Ford's 2.0L EcoBoost architecture. The Bosch 0261520152 pump is identical whether packaged in a Ford box (AG9Z-9350-B), Land Rover box (LR025597), or Volvo box (31359815).
What is the flat tappet follower service interval on the EcoBoost 2.0L?
We recommend inspecting the flat cam follower tappet every 50,000 miles and replacing it immediately whenever installing a new high-pressure fuel pump. Neglecting this inexpensive part can result in the follower wearing through and destroying the exhaust camshaft.
Say this to the shop: How do I verify the HPFP isn't being starved by the tank pump?
Ask the technician: 'Please record low-side fuel pressure PID (FRP_LOW) during the road test. If low-side fuel pressure stays solid above 55 psi while high-side fuel pressure (FRP) drops below 1800 psi under boost, we know the HPFP is failing rather than the tank pump or fuel filter.'
Ariza Kodlari (DTC) ve Teshis Protokolleri
Bu common rail enjektorunde asinma, devre arizasi veya kalibrasyon kaymasi olustugunda tetiklenen yaygin ariza kodlari (DTC):
Fuel Rail / System Pressure Too Low
Excessive internal backleak from worn control valve seats drops common rail pressure below target under engine load.
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.
Cylinder Misfire & Balancing Deviation
Carbon-clogged nozzle spray holes or missing IMA calibration causes uneven cylinder contribution. Recode ECM and verify washer seating.
Fuel Rail / System Pressure Too High
Spill line backpressure or stuck metering valve prevents rail depressurization, creating overpressure risks under load.
Çapraz Referans ve Uyumluluk
Kardeş parça numaraları, aynı platform varyantları ve bilinen uyumsuzluklar.
Teknik Arıza Teşhis ve Servis Protokolleri
Bu parça grubu için doğrulanmış atölye prosedürleri, test eşik değerleri ve servis talimatları.