Parts for your 2002 Daihatsu Gran move-Fuel pump

2002 Daihatsu Gran Move fuel pump: what it does and how to look after it

Yes, the 2002 Daihatsu Gran Move uses a fuel pump. Technical sources including the Daihatsu Gran Move/Pyzar workshop manual for the EFI petrol engines and the Daihatsu Electronic Parts Catalogue list an in-tank electric fuel pump integrated with the fuel level sender unit. These factory references specify an electric pump supplying the fuel rail at regulated pressure, confirming the part is fitted and relevant to this model.

On this Gran Move, the fuel pump’s job is simple but critical: it draws petrol from the tank and feeds the engine at steady, controlled pressure so it starts easily, idles cleanly and pulls well up hills. Being submerged in the tank helps keep the pump cool and quiet, and the assembly typically includes a strainer to catch larger contaminants before fuel reaches the filter and injectors.

There’s no scheduled replacement interval for the pump itself, but good servicing habits go a long way. Keep at least a quarter tank of fuel to help cool and lubricate the pump, stick to clean, quality petrol, and replace the fuel filter at the intervals in the service book (many owners opt for about 40,000–60,000 km). If the car sits for ages, consider fresh fuel to avoid varnish build-up. During services, a quick listen for unusual whining from the tank and a scan for lean codes or misfires is smart.

• Common signs the pump is tired: hard starting, hesitation on hills, surging at cruise, louder-than-usual humming from the tank, and low fuel pressure readings.

Replacement is straightforward for a trained tech and a careful DIYer:

1. Disconnect the battery, work in a well-ventilated area, and relieve fuel pressure.
2. Lift the rear seat base or boot floor service cover (varies by trim) to access the pump module.
3. Unplug the connector and lines, remove the locking ring, and lift out the module.
4. Fit the new pump/module with a fresh tank seal and strainer, refit the ring, reconnect lines, and prime the system with a few key-on cycles before starting.

While you’re there, replacing the fuel filter and inspecting hoses and the tank seal is a tidy bit of preventive maintenance that keeps the Gran Move running sweet for many more kilometres.

Popular questions

Does the 2002 Daihatsu Gran Move have a mechanical or electric fuel pump?
It uses an electric, in-tank pump as part of the fuel sender module. This setup is standard for its EFI petrol engines and is documented in Daihatsu’s workshop manual and EPC for the Gran Move/Pyzar platform.

Where is the fuel pump located and how hard is it to replace?
It sits inside the fuel tank and is accessed via a service cover under the rear seat base or boot floor. With basic tools and care around fuel vapours, replacement typically takes 1–2 hours. Always fit a new tank seal and strainer.

How long do Gran Move fuel pumps last and what shortens their life?
Many go 150,000–250,000 km or more. Running very low on fuel frequently, contaminated petrol, and skipped filter changes can shorten pump life. Keeping at least a quarter tank and servicing the filter helps the pump live longer.