Golf Mk4
| Overview of fitting locations |
| 1 - | Knock sensor 1 -G61- |
| q | Location: cylinder block exhaust side |
| q | → Item or → Item |
| 2 - | Lambda probe -G39-, 50 Nm |
| q | Location: in front exhaust pipe for cylinders 1, 2 and 3 |
| 3 - | Lambda probe after catalytic converter -G130-, 50 Nm |
| q | Location: rear catalytic converter |
| 4 - | Lambda probe 2 -G108-, 50 Nm |
| q | Location: in front exhaust pipe for cylinders 4, 5 and 6 |
| 5 - | Lambda probe 2 after catalytic converter -G131-, 50 Nm |
| q | Location: rear catalytic converter |
| 6 - | Connector |
| q | For engine control unit |
| q | Only detach or attach connector with ignition switched off. |
| q | Release to pull off. |
| 7 - | Motronic control unit -J220- |
| q | Location: in plenum chamber. |
| 8 - | Throttle valve module -J338- |
| q | Heated by coolant. |
| 9 - | Protective housing |
| q | For secondary air pump relay -J299- |
| 10 - | Air mass meter -G70- with intake air temperature sender -G42- |
| 11 - | Air filter |
| 12 - | Valves for camshaft adjustment |
| q | For engine codes AQP and AUE → Item |
| q | For engine codes BDE, BFH, BJS and BML → Item and → Item |
| 13 - | Ignition transformer -N152- |
| q | Only for engine codes AQP and AUE |
| q | With marking for ignition cables, do not mix up |
| q | → Item |
| q | One ignition coil with final output stage is installed per cylinder for engine codes BDE, BFH, BJS and BML → Item |
| 14 - | Hall sender -G40- |
| 15 - | Fuel pressure regulator |
| 16 - | Vacuum actuator |
| q | For intake manifold change-over. |
| 17 - | Coolant temperature sender -G62- |
| q | Blue |
| q | For engine control unit |
| q | With coolant temperature display sender -G2-. |
| q | Before removing, release pressure in cooling system if necessary. |
| 18 - | Engine speed sender -G28- |
| 19 - | Knock sensor 2 -G66- |
| q | Fitting location: cylinder block intake side. |
| q | → Item or → Item |
| 20 - | Secondary air inlet valve -N112- |
| 21 - | Variable intake manifold changeover valve -N156- |
| q | For intake manifold change-over. |
| 22 - | Secondary air pump motor -V101- |
| 23 - | Injector, cylinder 1 -N30- |
| q | Injector, cylinder 2 -N31- |
| q | Injector, cylinder 3 -N32- |
| q | Injector, cylinder 4 -N33- |
| q | Injector, cylinder 5 -N83- |
| q | Injector, cylinder 6 -N84- |
| 24 - | Activated charcoal filter solenoid valve 1 -N80- |
