Removing:: Audi A3 1.6 (APF, AVU, BFQ)

🧭 Before you start

Battery off, engine cover off, belt direction marked, belt and tensioner removed. Disconnect and remove the alternator and its bracket, unplug N156 and the Hall sender, remove the secondary air pump motor and bracket, then release the rivets and bolts and slide the lower intake manifold section off the cylinder head from the front.

Fits: Audi A3 (8L, 1996–2003)

Don't miss

• Mark the poly V-belt running direction before removal so it goes back the same way.
• Disconnect the battery earth first; the alternator B+ wire is live otherwise.
• Label the secondary air pump pressure hoses; they are easy to swap on refitting.
• Press the manifold lugs apart gently; brittle plastic lugs break easily on older engines.

Written for this job from the workshop steps below · TorqFix editorial.

🔧 Engine codes this applies to

📐 19 workshop diagrams for APF

Real factory drawings for this job — timing marks, bolt locations and routing. Locked in the free view.

📋 Procedure

1. First disconnect battery earth strap at negative battery terminal.
2. Lever out plug and unscrew nuts -arrows-.
3. Remove the engine cover. [Note: Before removing the poly V-belt, mark the running direction for reinstallation purposes.]
4. Swivel tensioning roller in direction of arrow to slacken poly V-belt.
5. Remove poly V-belt.

6. Remove tensioning element for poly V-belt.
7. Unscrew wiring(1) (terminal 30/B+) and detach connector (2).
8. Detach cable clip (3).
9. Unscrew alternator and remove upwards.
10. Remove bracket from alternator:
11. Unplug connector (1) from intake manifold changeover solenoid valve N156.
12. Unplug connector (2) from Hall sender.
13. Unplug connector (1) from secondary air pump motor.
14. Detach pressure hoses (2) and (3) from secondary air pump motor.
15. Unscrew secondary air pump motor.
16. Unscrew secondary air pump bracket.
17. Open cable tie (1) and remove bracket.
18. Remove both spreader rivets (1).
19. Unscrew the two bolts (2).
20. Release all other bolts from lower section of intake manifold to cylinder head.
21. Carefully press the two lugs apart and pull off lower section of intake manifold from front.

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