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Removing and installing fuel system diagnostic pump and activated charcoal filter — VW

Removing and installing fuel system diagnostic pump and activated charcoal filter on VW: 14 steps, engines AQP, AUE, BDE, BFH.

Workshop procedure for VW — the exact step sequence and torque figures, straight from real workshop data.

14 steps 6 engine codes

🧭 Before you start

Fits: VW Golf IV / Bora (1J)

🔧 Engine codes this applies to

📐 25 workshop diagrams for AQP

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

Removing and installing fuel system diagnostic pump and activated charcoal filter — AQP · diagram 1
Removing and installing fuel system diagnostic pump and activated charcoal filter — AQP · diagram 2
Removing and installing fuel system diagnostic pump and activated charcoal filter — AQP · diagram 3
Removing and installing fuel system diagnostic pump and activated charcoal filter — AQP · diagram 4
Removing and installing fuel system diagnostic pump and activated charcoal filter — AQP · diagram 5
Removing and installing fuel system diagnostic pump and activated charcoal filter — AQP · diagram 6
Removing and installing fuel system diagnostic pump and activated charcoal filter — AQP · diagram 7
Removing and installing fuel system diagnostic pump and activated charcoal filter — AQP · diagram 8
+ 17 more diagrams

📋 Procedure

  1. Raise vehicle.
  2. Remove rear right wheel.
  3. Remove rear right wheel housing liner General body repairs, exterior66Removing and installing wheel housing liner; Rear wheel housing liner.
  4. Unbolt cover plate in front of tank filler neck.
  5. Detach connector (1) from fuel system diagnostic pump V144 and disconnect breather line (2) at connection.
AQP? Steps differ between engine variants — check this job against your exact car before you commit to it. Check my car — free →
  1. Then clip breather line to activated charcoal filter solenoid valve 1N80(3) in wheel housing and unplug connection.
  2. You can now unscrew securing nuts (4) and remove fuel system diagnostic pump V144.
  3. Remove silencer .
  4. Then unscrew heat shield over rear silencer from floor panel.
  5. Next unscrew right and left anti-roll bar bearings from underbody. Running gear, axles, steering, front- and four-wheel drive42Assembly overview for subframe with final drive
  6. Unscrew cover beneath activated charcoal filter.
  7. Detach connector (1) from activated charcoal filter solenoid valve 2N115.
  8. Unscrew three studs (arrows) and remove activated charcoal filter from well.
  9. Installation of activated charcoal filter is carried out in reverse order.
Workshop diagrams

Ask TorqFix about your VW AQP — it answers with the exact sequence for that engine and the workshop drawing for each step. First question is free after a 20-second sign-up, no card.

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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

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Workshop data on this page last updated 20 Sep 2026.