Parts for your 2001 Daihatsu Gran move-Radiator

2001 Daihatsu Gran Move Radiator — What It Does and How to Look After It

Yes, a radiator is absolutely used on the 2001 Daihatsu Gran Move. Daihatsu’s factory workshop literature for the Gran Move/Pyzar details a liquid-cooled inline petrol engine with a cross‑flow aluminium radiator and electric thermo fan. Aftermarket technical catalogues from well-known suppliers such as Denso, Nissens and ADRAD also list direct-fit radiator assemblies for 1996–2002 Gran Move models, confirming the part is standard equipment.

On this little MPV, the radiator’s job is straightforward but crucial: move heat out of the engine coolant and keep temperatures in the sweet spot, whether it’s crawling through city traffic or cruising the motorway with the air con on. Coolant flows from the engine to the radiator, sheds heat as air passes through the fins, and returns to keep the temp steady. If the radiator can’t do its thing, the engine can overheat, which risks head gasket dramas and warped components—nobody wants that under the bonnet.

As part of servicing a 2001 Gran Move, it’s smart to give the cooling system regular attention. Fresh coolant every 2–4 years (or about 40,000–60,000 km) helps keep corrosion at bay inside the narrow tubes. Use quality, silicate‑free ethylene glycol coolant mixed 50/50 with demineralised water unless a specialist recommends otherwise. While you’re there, check the radiator cap (pressure rating typically around 0.9 bar), upper and lower hoses, and clamps. Look for crusty deposits, splits, or dampness around the plastic end tanks—classic signs of a leak. Make sure the electric fan kicks in when warm and that the condenser isn’t clogging airflow in front.

If replacement is on the cards, the job is fairly straightforward for a competent DIYer. Drain the system, remove the shroud and fan assembly, disconnect the hoses, unplug the fan, and lift the radiator out. If it’s an automatic, the radiator may have integrated transmission cooler fittings—cap the lines neatly and top up/check ATF level after refit. Refill slowly with the heater on hot, bleed any air (squeeze the hoses gently), and recheck the level after a decent drive once it’s cooled. New hose clamps and a fresh cap are cheap insurance.

• Watch for: temperature creeping up at idle, sweet coolant smell, green/white staining, or frequent top-ups.
• Service tip: a gentle back-flush restores flow if the core’s partly clogged, but cracked tanks or pinhole leaks call for a new unit.

Popular questions about the 2001 Daihatsu Gran Move radiator

What coolant should be used, and how much does it take?
The Gran Move is happiest on a quality ethylene glycol coolant that’s silicate‑free and suitable for Japanese engines. A 50/50 premix with demineralised water is the go for most climates in Australia and New Zealand. Capacity varies a little by engine and heater core, but expect roughly 5–6 litres for a full drain and refill. Always check the level again after the first proper heat cycle.

How often should the coolant be changed?
Every 2–4 years or about 40,000–60,000 km is a solid interval for this era of Daihatsu. Short trips, heavy towing, or lots of idling in hot weather can justify doing it sooner. Fresh coolant keeps corrosion inhibitors active, protects the water pump and thermostat, and helps the radiator last longer.

Does the radiator include an automatic transmission cooler?
Many Gran Move automatics route transmission fluid through a small cooler inside the radiator end tank. If replacing the radiator on an auto, expect two extra fittings for the cooler lines. After refitting, top up and check ATF level following the correct procedure, as a small loss can occur during the swap.