Td5 injector loom oil wicking
On the Td5, engine oil can pass the injector loom seals under the rocker cover and travel down the wiring into the ECU plug, causing misfires and rough running. The fix is a new injector loom and cleaned connectors.
Defender · Defender 90 / 110 / 130 · 1990s–2016
Defender (Classic) electrical
Charging, starting, control modules and wiring for Land Rover models.
What is specific to the Defender (Classic)
The Defender (Classic) was sold with both fuel types. Diesel derivatives (2.5 300Tdi turbodiesel, 2.5 Td5 five-cylinder turbodiesel, 2.4 TDCi Puma turbodiesel and 2.2 TDCi Puma turbodiesel) use glow plugs, while petrol derivatives (2.8i straight-six petrol (South African derivative)) use spark plugs and ignition coils.
Electrical parts also changed across the 1990s–2016 production span, so give the model year with the VIN.
Have this ready when you enquire
- The 17-character VIN from your licence document, which identifies your exact Defender 90 / 110 / 130 (sold here 1990s–2016) and its build.
- The engine code or number, because this model was sold with the 2.5 300Tdi turbodiesel, 2.5 Td5 five-cylinder turbodiesel, 2.8i straight-six petrol (South African derivative) (BMW M52), 2.4 TDCi Puma turbodiesel and 2.2 TDCi Puma turbodiesel.
- A photo of the old part or its part number, if you can get to it.
Known Defender (Classic) electrical faults
Parts commonly needed for the Defender (Classic)
On Td5 vehicles the injector loom, fuel pressure regulator and cylinder heads are common replacements, while Puma owners look for EGR valves, glow plug modules and injector leak-off pipes.
Choose the Defender (Classic) part
Defender (Classic) electrical questions
Why does my Land Rover show so many warnings at once?
Modern Land Rovers are very sensitive to low voltage. A tired battery or poor earth connection can make several modules log faults at the same time. Test the battery and charging system, check the main earth points, then clear the codes and see which faults return.
What causes a Land Rover battery to go flat overnight?
A parasitic drain, where something stays on after the vehicle is locked, is the usual cause. Common culprits include a module that does not go to sleep, an aftermarket accessory, a faulty relay or an interior light switch. A workshop can measure the current drain and pull fuses one at a time to find it.
Electrical for other Defender models
Other Defender (Classic) systems
For how these parts work and the signs of wear, read the Land Rover electrical guide.
The right electrical for your Defender (Classic)
Share the VIN and engine number and the SparesBoyz parts team will check fitment before quoting.