AWC engine — Seat 1.8 (1.8L)
1.8L · 150 hp
Engine overview
Manufacturer
SEAT / VOLKSWAGEN
Displacement
1.8 L
Power
150 hp
Production years
2001-2010
Fuel type
Petrol
Vehicles with this engine
7V
7M
Torque figures by job
From the step-by-step procedures for this engine — each figure sits in the step that uses it.
- 25 Nm (18 lb-ft) — Tighten adapter10 - 222 A /14 on battery bracket using M8×35 bolts (arrows)
- 25 Nm (18 lb-ft) — Install vibration damper/belt pulley (can only be installed in one position)
- 10 Nm (7.4 lb-ft) — Install centre and lower toothed belt guard
- 20 Nm (15 lb-ft) — Install bracket for air pipe on oil sump
- 45 Nm (33 lb-ft) — Fit engine bracket to cylinder block
- 45 Nm (33 lb-ft) — Bolt engine bracket T10012 to cylinder block with securing bolt M10x25
Removing and installing cylinder head
- 40 Nm (30 lb-ft) — Pre-tighten all bolts to
- 10 Nm (7.4 lb-ft) — Install ignition coils and tighten to
- 10 Nm (7.4 lb-ft) — Install centre and lower toothed belt guard
- 25 Nm (18 lb-ft) — Install vibration damper/belt pulley (can only be installed in one position)
- 45 Nm (33 lb-ft) — Fit engine bracket to cylinder block
- 25 Nm (18 lb-ft) — Install washer (cone facing outwards) and tighten securing bolt to
- 10 Nm (7.4 lb-ft) — Install Hall sender housing and tighten to
Removing and installing camshafts
- 10 Nm (7.4 lb-ft) — Tighten chain tensioner to
- 10 Nm (7.4 lb-ft) — Tighten inlet and exhaust camshaft 2nd and 4th bearing caps alternately and diagonally to
- 10 Nm (7.4 lb-ft) — Install both bearing caps at inlet and exhaust camshaft chain sprockets
- 10 Nm (7.4 lb-ft) — Coat hatched area of double bearing cap lightly with sealantAMV 174 004 01, install and…
- 10 Nm (7.4 lb-ft) — Install remaining bearing caps and tighten to
- 65 Nm (48 lb-ft) — Install camshaft pulley (small web faces outwards (arrow) and TDC marking is visible) and…
- 20 Nm (15 lb-ft) — Bolt hydraulic line for power-assisted steering onto right engine bracket
Removing and installing sealing flange - pulley end
- 15 Nm (11 lb-ft) — Tighten sealing flange securing bolts diagonally and alternately
- 90 Nm (66 lb-ft) — Tighten new centre bolt to
Removing and installing oil sump
- 15 Nm (11 lb-ft) — Tighten oil sump bolts to
- 40 Nm (30 lb-ft) — Tighten bolts securing sump to gearbox to
- 10 Nm (7.4 lb-ft) — Tighten bolts securing sump/oil return line to
- 20 Nm (15 lb-ft) — Tighten bolts securing sump/air pipe bracket to
- 90 Nm (66 lb-ft) — Tighten new centre bolt to
Factory specifications
Values from the manufacturer documentation for this engine.
Engine (general)
| Engine code | AWC |
| Capacity | 1781 cc |
| Idle speed | 760 - 880 rpm |
| Normal | 10 - 13 bar |
| Minimum | 7.0 bar |
| Differential limit between cylinders | < 3 bar |
| Oil pressure | 2.7 - 4.5 / 2000 bar/rpm |
Engine (petrol)
| Fuel system (make and type) | Motronic ME7.5 |
| Number of cylinders | 4 |
| Firing order | 1 - 3 - 4 -2 |
| Spark plugs (make and type) | VW/Audi 101 000 063 AA NGK PFR6Q |
| Spark plug gap | < 0.8 mm |
| Injection pressure/system pressure | 2.5 3.0 bar |
| Injector resistance | 11.0 - 15.0 ohms |
| CO at fast-idle speed | < 0.3 % |
| Fast-idle speed | 2500 - 3000 rpm |
| Lambda | 0.970 - 1.030 |
| Lambda change (Delta Lambda) | 0.03 |
| Oil temperature during test | 80 °C |
| Closed-loop test at: | 760 - 880 rpm |
| Turbo boost | 1.350 - 1.750 bar |
| Conditioning catalytic converter | 2 min |
| CO exhaust gas | < 0.5 % |
Cooling system
| Cap pressure | 1.4 - 1.6 bar |
| Thermostat opens at | 87 - 102 °C |
| Stage 1 | 92 - 97 °C |
| Stage 2 | 99 - 105 °C |
Electrical
| Alternator | 120 A |
| Battery | 60 Ah |
Capacities
| Engine sump, incl. filter | 4.5 l |
| Manual transmission | 02N |
| Gearbox refill | 2.5 l |
| Automatic transmission | 09B |
| Cooling system | 7.0 / 9.0 / 9.6 l |
| Air-conditioner refrigerant | 700 + 50 g |
| Air-conditioner refrigerant | 1050 + 50 g |
| Air-conditioner compressor oil | 135 ml |
| Air-conditioner compressor oil | 240 ml |
Torque settings
| Cylinder head bolts — Stage 1 | 40 Nm |
| Cylinder head bolts — Stage 2 | 90 ° |
| Cylinder head bolts — Stage 3 | 90 ° |
| Flywheel | 60 Nm + 90° Nm |
| Knock sensor | 20 Nm |
| Oxygen sensor | 50 Nm |
| Spark plugs | 30 Nm |
| Main bearing cap | 65 Nm + 90° Nm |
| Big-end bearing cap | 30 Nm + 90° Nm |
| Oil plug | 30 Nm |
| Wheel bolts | 170 Nm |
| Crankshaft gearwheel | 90 Nm + 90° Nm |
Emissions
| Emission code | 70/220*2003/76B |
| Emission standard | Euro 4 |
| CO2 average | 225 g/km |
| CO | 0.545 g/km |
| HC | 0.061 g/km |
| NOx | 0.017 g/km |
Engine codes in the same family
The same code prefix usually means the same block with a different output, fuel or model year. Procedures are often shared — check the code on the engine plate.
Workshop procedures for this engine
Step-by-step procedures from the workshop database, carrying 120 torque figures.
- Removing and installing camshafts – VW Passat B6 · 39 torque figures
- Removing and installing cylinder head · 23 torque figures
- Removing and installing oil sump – VW Passat B5 · 23 torque figures
- Removing and installing thermostat · 9 torque figures
- Removing, installing and tensioning toothed belt, engine code AWC · 5 torque figures
- Removing and installing sealing flange - pulley end – VW · 5 torque figures
- Removing and installing fuel delivery unit – VW Tiguan I · 5 torque figures
- Removing, installing and tensioning toothed belt, engine code AJH · 3 torque figures
- Renewing camshaft oil seals – VW Sharan I / SEAT Alhambra · 3 torque figures
- Renewing crankshaft oil seal - pulley end – VW · 4 torque figures
- Seat Alhambra 1.8 Turbo AWC timing belt replacement
- Checking fuel pump – VW Polo 9N
- Seat Alhambra 1.8 Turbo AJH/AWC timing chain replacement
- Checking delivery rate
- Removing and installing radiator and fan – VW
- Checking charge pressure control
- Checking accelerator position sender – VW
- Checking exhaust gas recirculation potentiometer G212 – VW
- Checking non-return valve for fuel pump
- Checking charge pressure sender G31 – VW 1.8 AJH/AWC
- Removing and installing charge air cooler: engine code AWC · 1 torque figures
- Checking Lambda probe and Lambda regulation before catalyst
- Checking Lambda probe heating for Lambda probe before catalyst
- Checking Lambda probe heating for Lambda probe after catalyst
- Checking Lambda probe and Lambda regulation after catalyst
Got a AWC problem? Ask for free.
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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.
Variants of the same model differ. Cross-check torque against the factory manual for your engine before final tightening.
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The story behind TorqFix →Workshop data on this page last updated 22 Aug 2026.