Removing and installing throttle valve module J338: Audi A3 (AXX, BHK, BHZ, BPU, …)
Step-by-step removing and installing throttle valve module J338 for the Audi A3: 19 steps. What to remove, in what order, and what to check after.
Workshop procedure for AUDI — the exact step sequence and torque figures, straight from real workshop data.
🧭 Before you start
Fits: Audi A3 (8V, 2012–2020)
- Renewed: seals
Don't miss
- Place a cloth underneath to catch escaping coolant.
- Disregard (items 1, 2).
- Renew seals and O-ring.
🔧 Engine codes this applies to
📋 Procedure
- Remove engine cover panel .
- Remove air cleaner housing .
- Remove bolt (arrow) on both sides.
- Unclip air duct (bottom section) (1) and detach.
- Remove bolts (arrows).
- Release screw-type clip (2) and detach air pipe (1).
- Remove bolts (arrows).
- Clamp off coolant hoses (1) and (4) using hose clamps for hoses up to 25 mm3094. [Note: Place a cloth underneath to catch escaping coolant.]
- Release hose clips (2, 3) and disconnect coolant hoses.
- Remove bolts (arrows).
- Clamp off coolant hoses (1) and (5) using hose clamps for hoses up to 25 mm3094. [Note: Place a cloth underneath to catch escaping coolant.]
- Release hose clips (2, 3, 4) and disconnect coolant hoses.
- Remove bolt (3). [Note: Disregard (items 1, 2).]
- Unplug electrical connectors:
- Release hose clip (4) and detach air hose.
- Remove bolts (1) and detach connection with throttle valve module J338. [Note: Renew seals and O-ring.]
- When fitting intake connecting pipe with throttle valve module J338, pay attention to dowel pins.
- Install coolant pipes (top front) .
- Install engine cover panel .
Other AUDI procedures
- Removing and installing left engine support with oil filter housing
- Removing and installing air filter element – Audi
- Removing and installing engine support (left-side) with oil filter housing
- Checking current draw – VW Polo 6R
- Removing and installing engine speed sender G28
- Removing and installing toothed belt – Audi · 56 torque figures
- Removing engine – Audi A8 D3 · 41 torque figures
- Removing camshaft timing chain from camshafts – Audi A6/A7 C7 · 38 torque figures
- Installing engine – Audi A8 D4 · 36 torque figures
- Removing and installing camshaft timing chain · 29 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.