Polo Mk4
| Injection components - remove and install |
| 1 - | Connector |
| q | To engine command unit. |
| q | Disconnect or connect with ignition off. |
| 2 - | Command unit |
| q | For injection system, activated charcoal filter electromagnetic valve regulation, detonation and lambda regulation, rotation limit, ignition and self-diagnosis. |
| q | In case of replacement, adapt engine command unit to throttle butterfly body → Chapter. Must adapt also to the electronic immobilizer. |
| 3 - | Connector |
| q | Black, 4-pin |
| q | For intake collector pressure sensor -G71- with intake air temperature sensor -G42- |
| q | Terminal connector contacts, golden |
| 4 - | Connector |
| q | black, 3-pin |
| q | For engine rotation sensor -G28- |
| 5 - | Air filter cover |
| q | Remove and install → Chapter. |
| 6 - | Fastening clamp |
| q | Consider version |
| 7 - | Guide for tubes |
| q | Fixed onto fuel distributor |
| 8 - | Connector |
| q | black, 2-pin |
| q | To injector (-N30-...N33) |
| 9 - | Supply tubes assy |
| q | Black, with white marking |
| q | Ensure proper fastening |
| q | Coming from fuel filter: → Rep. Gr.20 |
| 10 - | 10 Nm |
| 11 - | Fuel distributor with injectors |
| q | Remove and install → Chapter. |
| 12 - | 20Nm |
| 13 - | Connector |
| q | Black, 6-pin |
| q | To command unit of throttle butterfly valve -J338- |
| q | Terminal connector contacts, golden |
| 14 - | Comes from valve to activated charcoal filter -N80- → Rep. Gr.20 |
| q | Fasten with spring braces |
| 15 - | Comes from servo-brake |
| 16 - | Intake collector |
| q | Remove and install → Chapter. |
| 17 - | Sealing ring |
| q | Replace |
| q | Observe assembly position |
| 18 - | Lambda probe , 40 Nm |
| q | Location: at front tube: |
| q | Lubricate only thread with “G 052 112 A3” |
| q | Heating electric supply through fuel pump relay -J17- |
| q | Remove and install with wrench set for lambda probe 3337 |
| 19 - | 4-pin connector |
| q | Black |
| q | To lambda probe |
| q | 3 and 4 pins, golden |
| 20 - | Engine rotation sensor -G28- |
| q | Location: engine block, intake side |
| 21 - | 5Nm |
| 22 - | Guide tube |
| q | For oil level stick |
| 23 - | 3 Nm |
| q | Observe note referring to installation → Chapter. |
| 24 - | Fastener |
| q | Ensure it is properly installed |
| 25 - | Sealing ring |
| q | Replace |
| 26 - | Connector |
| q | Black, 2-pin |
| q | To cooling fluid temperature sensor -G62- and cooling fluid temperature indicator sensor -G2- |
| q | Terminal connector contacts, golden |
| 27 - | Closing cover |
| q | Before removing it, reduce cooling system pressure |
| 28 - | Cooling fluid temperature sensor -G62- |
| q | For engine command unit |
| q | With sensor for cooling fluid temperature indicator -G2- |
| q | Before removing it, reduce cooling system pressure |
| 29 - | Cooling fluid thermostat cover |
