Installing engine - all engine codes except CUKB, CXUA: Audi A3 (CJZA, CMBA, CPTA, CSSA, …)

🧭 Before you start

Prepare the engine with intermediate plate, dowel sleeves, a centred clutch plate and lightly greased input shaft splines, then join the gearbox and fit its support. Lower the assembly in on the engine support, start the mounting bolts by hand only, and refit everything removed: starter, coolant pump, air pipes, slave cylinder, cables, catalyst, drive shafts, wishbones, alternator, compressor, belt, electrics, throttle valve module and engine control unit. Adjust the assembly mountings, then check oil, fill with fresh coolant and reset misfire adaptions with the diagnostic tester.

Fits: Audi A3 (8V, 2012–2020); platform code 85

• Opens: coolant
• Renewed: clutch release bearing

Don't miss

• Fit the dowel sleeves for engine-to-gearbox centring if they are missing from the cylinder block.
• Engine and gearbox mounting bolts go in hand-tight only; final torque comes after the mountings are adjusted.
• Grease the input shaft splines only lightly and make sure the clutch plate is properly centred.
• Do not reuse the old coolant when filling the system.
• Never boost-start with battery charging equipment; excessive voltage can destroy control units.
• After an engine change, reset the misfire adaptions in guided functions.

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

🔧 Engine codes this applies to

📋 Procedure

1. Install intermediate plate .
2. If not already fitted, install dowel sleeves (A) for centring engine and gearbox in cylinder block.
3. Remove needle bearing in crankshaft if fitted .
4. Renew clutch release bearing if worn 30Clutch mechanism; Servicing clutch mechanism.
5. Lubricate splines of gearbox input shaft lightly with grease for clutch plate splines Electronic parts catalogue.

6. Make sure that clutch plate is properly centred.
7. Install needle bearing if not fitted in crankshaft .
8. Secure gearbox to engine.
9. Install gearbox support.
10. Take up engine/gearbox assembly with engine support T10497.
11. Guide engine/gearbox assembly into body.
12. Initially screw in bolts (arrows) for engine mounting by hand until they make contact. [Note: The illustration shows the gearbox mounting for vehicles with manual gearbox 0AJ; it is similar on other vehicles.]
13. Initially screw in bolts (1) for gearbox mounting by hand until they make contact. [Note: The bolts are tightened to final torque only after adjusting the assembly mountings .Disregard (arrow and items 2, 3).]
14. Remove engine support T10497 from engine.
15. Install starter Electrical system27Starter; Exploded view - starter.
16. Install continued coolant circulation pump V51.
17. Install air pipe .
18. Install air ducts .
19. Install clutch slave cylinder 30Clutch mechanism; Removing and installing clutch slave cylinder.
20. Install cables with cable support bracket 34Selector mechanism; Exploded view - selector cables.
21. Install catalytic converter .
22. Install drive shafts Running gear, axles, steering40Drive shaft; Exploded view - drive shaft.
23. Install heat shield for drive shaft Running gear, axles, steering40Drive shaft; Removing and installing heat shield for drive shaft.
24. Install wishbone, swivel joint and coupling rod Running gear, axles, steering40Lower wishbone, swivel joint; Exploded view - lower wishbone, swivel joint.
25. Install alternator Electrical system27Alternator; Exploded view - alternator.
26. Install air conditioner compressor Heating, air conditioning87Air conditioner compressor.
27. Install poly V-belt .
28. Electrical connections and routing Electrical system97Relay carriers, fuse carriers, electronics boxes; Overview of fitting locations - relay carriers, fuse carriers, electronics boxes and .
29. Install throttle valve module J338.
30. Install engine control unit J623.
31. Connect coolant hoses with plug-in connector .
32. Install pendulum support.
33. Install front wheel housing liners General body repairs, exterior66Wheel housing liners; Exploded view - front wheel housing liner.
34. Fit front wheels Running gear, axles, steering44Wheels, tyres.
35. Adjust assembly mountings .
36. Install battery tray Electrical system27Battery; Exploded view - battery.
37. Install air cleaner housing .
38. Check oil level 821. [Note: Do not reuse coolant.]
39. ⚠ Risk of irreparable damage to control units because of excessive voltage.Never use battery charging equipment for boost starting. — Fill up with coolant .
40. After renewing engine, misfire adaption must be reset. To do so, select 01 - Reset adaptions misfires in Guided Functions mode of .

Other AUDI procedures

• Removing and installing coolant temperature sender G62 - engine codes CUKB, CXUA
• Removing and installing catalytic converter - all engine codes except CUKB, CXUA
• Removing and installing engine control unit J623 (with protective housing)
• Removing and installing oil pump - engine codes CJZA, CYVB
• Removing and installing coolant pipes (front) - engine codes CUKB, CXUA
• 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