Golf4/Bora (1.8) AGN,AGU,AQA,ARZ,AUM,AUQ — VW
Golf4/Bora (1.8) AGN,AGU,AQA,ARZ,AUM,AUQ on VW: 74 steps, engines AGN, AGU, AQA, ARX. What to remove, in what order, and what to check after.
Workshop procedure for VW — the exact step sequence and torque figures, straight from real workshop data.
🧭 Before you start
Fits: platform codes 1.8, |, TURBO, GTI, (1.8, TURBO)
Don't miss
- Remove the power steering fluid reservoir but do not disconnect
📋 Procedure
Preparation and removal
- Before disconnecting the battery cable, check the audio system security code
- Remove the noise insulation covers
- Hooks:
- Remove the ancillary drive belt
- Remove the engine support bar
- Remove the power steering fluid reservoir but do not disconnect
- Disconnect the throttle valve control unit vacuum line
Installation and checks
- Refit the engine support bracket
- Refit the engine mount
- Bolts:
- Fit the crankshaft pulley
- Turn the engine 2 rotations by hand
- Engine code
- Add Loctite
- Tensioning bolt:
- Fit the tensioning bolt
- Refit the right-hand headlight
- Refit the engine cover
Other VW procedures
- Checking oil pressure and oil pressure switch
- Checking charge pressure regulation – VW Golf IV / Bora 1.8
- Checking fuel gauge senderG – Audi Q7
- Removing and installing fuel gauge sender – VW Golf V / Jetta
- Checking fuel pump delivery rate – Audi A8 D3
- Removing engine · 41 torque figures
- Removing and installing camshaft – VW Golf Cabriolet · 47 torque figures
- Adjusting valve timing – VW Passat B5 · 83 torque figures
- Removing and installing camshafts – VW Passat B6 · 39 torque figures
- Removing and installing coolant pump · 53 torque figures
Who makes these pages, and how
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.
Seen a figure that does not match your manual? Write to us — we correct it and note when. support@torqfix.com
The story behind TorqFix →Workshop data on this page last updated 20 Sep 2026.