Removing and installing exhaust gas recirculation cooler - engine code letters BDG, BDH — AUDI

🧭 Before you start

Fits: Audi A4 Cabriolet B6/B7 (8H), Audi A4 B6/B7 (8E)

• Opens: coolant
• Renewed: seals

Don't miss

• Mark position of retaining clips on injector pipes (e.g. with felt-tip pen).
• Mark injector pipes according to cylinder (e.g. with felt-tip pen).
• Renew seals and gaskets. Secure all hose connections with the correct type of hose clips (same as original equipment) Parts catalogue.
• Make sure that retaining clips are positioned correctly.

🔧 Engine codes this applies to

📋 Procedure

1. Drain off coolant .
2. Remove intake manifold (front section) 23.
3. Unbolt coolant expansion tank (arrow).
4. Unplug electrical connector for coolant shortage indicator switch F66 at expansion tank (bottom) and move expansion tank to one side (coolant hoses (1 ... 3) remain attached).
5. Unplug electrical connector at injection pump.

6. Mark position of retaining clips on injector pipes (e.g. with felt-tip pen).
7. Mark injector pipes according to cylinder (e.g. with felt-tip pen).
8. Disconnect injector pipes one by one with ring spanner3035.
9. Remove bolts (1) and (2).
10. Use spring type clip pliersVAS 5024 A to disconnect coolant hoses (3).
11. Remove exhaust gas recirculation cooler. [Note: Renew seals and gaskets. Secure all hose connections with the correct type of hose clips (same as original equipment) Parts catalogue.]
12. Fit injector pipes one at a time, working from bottom to top and secure using torque wrenchV.A.G 1331 and 17 mm attachment (commercially available).
13. Make sure that retaining clips are positioned correctly.
14. Install intake manifold (front section) 23.
15. Fill cooling system .

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