Octavia Mk1
| Removing and installing parts of the injection system |
| For engines with identification characters AEG, APK, AQY, AZH |
| 1 - | Top part of intake manifold |
| 2 - | from activated charcoal filter solenoid valve -N80- |
| q | Activated charcoal filter → 2.0 ltr./85 kW Engine, Mechanics → Rep. Gr.20 |
| 3 - | Connector |
| q | for engines with engine identification characters AEG, APK, AQY - 52-pin |
| q | for engines with identification characters AZH - 81-pin |
| q | insert and remove plug when the ignition is switched off |
| q | unlock for removing |
| 4 - | Engine control unit -J220-* |
| q | Fitting location: in plenum chamber |
| q | Checking voltage supply → Chapter |
| q | Procedure if voltage interrupted → Chapter |
| q | replace → Chapter |
| 5 - | Connector |
| q | for engines with engine identification characters AEG, APK, AQY - 28-pin |
| q | for engines with identification characters AZH - 40-pin |
| q | insert and remove plug when the ignition is switched off |
| q | unlock for removing |
| 6 - | Secondary air injection valve -N112 - |
| q | only engines with identification characters AQY, AZH ? 07.2000 |
| 7 - | Air filter |
| q | disassembling and assembling → Chapter |
| 8 - | 10 Nm |
| 9 - | to air guide pipe |
| q | to injectors with air ring |
| 10 - | Air intake hose |
| q | only engines with identification characters AQY, AZH |
| q | to secondary air pump -V101 - |
| 11 - | 6 Nm |
| 12 - | Connector |
| q | 4-pin |
| q | to coolant temperature sender - G62- |
| 13 - | Coolant temperature sender -G62 -* |
| q | with coolant temperature gauge sensor -G2- |
| q | before removing, reduce pressure in cooling system if necessary |
| q | resistances → Fig. |
| 14 - | Retaining clip |
| q | check tightness |
| 15 - | 3-pin connector |
| q | grey |
| q | for engine speed sender -G28 - |
| 16 - | O-ring |
| q | replace if damaged |
| 17 - | Engine speed sender -G28-* |
| q | resistance between contacts 480...1000 Ω |
| 18 - | Lambda probe after catalyst -G130 -*, 50 Nm |
| q | Fitting location: in exhaust pipe downstream of catalytic converter |
| q | only engines with identification characters AQY, AZH |
| q | Testing lambda probe and lambda control downstream of catalytic converter → Chapter |
| 19 - | Plug connection for lambda probe downstream of catalytic converter |
| q | only engines with identification characters AQY, AZH |
| q | 4-pin |
| q | Brown |
| q | for lambda probe downstream of catalytic converter -G130- and lambda probe heater downstream of catalytic converter -Z29- |
| q | Fitting location → Item |
| 20 - | Lambda probe upstream of catalytic converter -G39-*, 50 Nm |
| q | Fitting location: in the exhaust manifold |
| q | coat only thread with hot bolt paste - G 052 112 A3-; the hot bolt paste must not get into the slots of the probe body |
| q | Power supply of probe heating via fuel pump relay -J17- |
| q | Testing lambda probe and lambda control upstream of catalytic converter → Chapter |
| q | Check lambda probe ageing before catalyst → Chapter |
| 21 - | Plug connection for lambda probe upstream of catalytic converter |
| q | for engines with engine identification characters AEG, APK, AQY - 4-pin |
| q | for engines with identification characters AZH - 6-pin |
| q | black |
| q | for lambda probe -G39- upstream of catalytic converter and lambda probe heater upstream of catalytic converter -Z19- |
| q | Fitting location → Item |
| 22 - | Bottom part of intake manifold |
| q | disassembling and assembling → Chapter |
| 23 - | Fuel rail with injection valves |
| q | disassemble and assemble bottom part of intake manifold → Chapter |
| 24 - | Fuel return-flow line |
| q | blue |
| q | secure with spring strap clamps |
| q | Check fitting position |
| q | to fuel delivery unit in fuel tank → 2.0 ltr./85 kW Engine, Mechanics → Rep. Gr.20 |
| 25 - | Fuel feed line |
| q | black |
| q | from fuel filter → 2.0 ltr./85 Engine, Mechanics → Rep. Gr.20 |
| 26 - | Gasket |
| q | replace if damaged |
| q | Check fitting position |
| 27 - | To crankcase vent valve |
| 28 - | Air intake hose |
