B230FB engine — Volvo 2.3 (2.3L)
2.3L · 131 hp
Engine overview
Vehicles with this engine
Factory specifications
Values from the manufacturer documentation for this engine.
Engine (general)
| Engine code | B 230 FB |
| Capacity | 2316 cc |
| Idle speed | 775 ± 50 rpm |
| Inlet | 0.30 - 0.40 mm |
| Exhaust | 0.30 - 0.40 mm |
| Normal | 9.0 bar |
| Differential limit between cylinders | < 2.0 bar |
| Oil pressure | 1.0 / 900 2.5 / 2000 3.0 / 3000 <8.0 / >3000 bar/rpm |
Engine (petrol)
| Fuel system (make and type) | Bosch LH-Jetronic 2.4 |
| Number of cylinders | 4 |
| Firing order | 1-3-4-2 |
| Timing stroboscopic (before TDC) | 12 / 775 °/rpm |
| Ignition coil resistance, primary | 0.6 - 0.9 ohms |
| Ignition coil resistance, secondary | 7000 - 8500 ohms |
| Spark plugs (make and type) | Volvo 270746-1 Bosch WR7DC |
| Spark plug gap | 0.7 - 0.8 mm |
| Injection pressure/system pressure | 3.0 bar |
| CO exhaust gas | 0.4 - 0.8 % |
| CO2 | 14.5 - 16.0 % |
| HC | 100 ppm |
| O2 | 0.1 - 0.5 % |
| Lambda | 0.97 - 1.03 |
| Oil temperature during test | 60 °C |
| Fast-idle speed | 2500 - 3000 rpm |
| CO at fast-idle speed | < 0.3 % |
| Lambda change (Delta Lambda) | 0.03 |
| Conditioning catalytic converter | 2 / 3000 min/rpm |
| Alternative method (Germany only) | 2 |
Cooling system
| Cap pressure | 1.5 bar |
| Thermostat opens at | 87 °C |
| Thermostat fully open at | 97 °C |
| Thermostat opens at | 92 °C |
| Thermostat fully open at | 102 °C |
Electrical
| Battery | 55 Ah |
| Alternator | 55 - 70 A |
Capacities
| Engine sump, incl. filter | 3.85 l |
| Manual transmission | M47 |
| Gearbox refill | 1.6 l |
| Manual transmission | M46 |
| Gearbox refill | 2.6 l |
| Differential | 1.30 (1030, 1045) 1.75 (1031) 1.40 (1035) 1.45 (1041) 1.50 (1055) 1.35 (1065) l |
| Automatic transmission | AW71 |
| Gearbox refill | 3.9 l |
| Cooling system | 8.5 l |
| Air-conditioner refrigerant | 950 g |
| Air-conditioner compressor oil | 240/220/200 ml |
Torque settings
| Cylinder head bolts — Stage 1 | 20 Nm |
| Cylinder head bolts — Stage 2 | 60 Nm |
| Cylinder head bolts — Stage 3 | 90 ° |
| Spark plugs | 25 Nm |
| Wheel nuts | 85 Nm |
Workshop procedures for this engine
Step-by-step procedures from the workshop database.
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TorqFix was built by a mechanic — after a 2,700 km drive with five roadside repairs that no diagnostic tool could explain.
The figures on this page come from manufacturer workshop documentation and are shown as they are. The page is assembled automatically from that data — it is not written by an AI. The AI works in the chat, where it answers for your specific car. It writes nothing here.
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The story behind TorqFix →Workshop data on this page last updated 22 Aug 2026.