Parts for your 2002 Daihatsu Gran move-Radiator

2002 Daihatsu Gran Move Radiator

Based on technical sources, the 2002 Daihatsu Gran Move absolutely uses a radiator. The factory workshop manual for the G300-series Gran Move/Pyzar (Cooling System section), the Daihatsu Electronic Parts Catalogue (EPC) for G300/G301 models, and Autodata model specifications all identify a front-mounted aluminium crossflow radiator with an electric thermo fan as part of the liquid-cooled petrol engine setup. So yes—radiator fitted, and it’s a key piece of the cooling system.

On the 2002 Gran Move, the radiator’s job is to pull heat out of the coolant that’s just soaked up engine warmth. Coolant flows from the engine to the radiator, sheds heat through the fins with the help of the fan and vehicle airflow, then heads back in to keep temps steady. Keeping this circuit healthy protects the head gasket, prevents pinging, and helps the auto trans too if the car’s radiator includes an integrated transmission cooler.

As part of regular servicing, it’s smart to inspect the radiator core and tanks for seepage, check the cap seal, and squeeze-test the upper and lower hoses for softness or cracking. Look for flaky fins and damp spots under the bonnet after a run. Overheating at idle but not on the move, a sweet smell, rusty coolant, or repeated top-ups are all red flags.

Coolant should be replaced on time—typically every 2 years or 40,000 km for conventional green glycol, or up to 5 years/100,000 km for long-life formulations (follow the coolant label and workshop guidance). Use a quality Type A ethylene glycol coolant mixed with demineralised water, and don’t mix types. When replacing the radiator: let it cool fully, drain via the tap, capture old coolant for proper recycling, swap over the fan shroud and any sensors, and replace the cap and hoses if they’re ageing. Refill slowly, run the heater on hot, bleed air, and recheck the level after a decent drive. For autos, cap the ATF lines during the job and confirm no leaks after refitting.

If the core is blocked, tanks are cracked, fins are crumbling, or there’s persistent overheating even after a good flush and new thermostat, a replacement radiator is the straightforward fix. It’s a relatively quick job with basic tools, and cheap insurance for the Gran Move’s hardworking little engine.

• Watch-list: leaks, fan not kicking in, brown sludge, soft hoses, low coolant.
• Good practice: new cap, fresh clamps, correct coolant mix, proper air bleeding.

Popular questions

What coolant does a 2002 Daihatsu Gran Move use, and how much?
Most owners run a quality Type A ethylene glycol coolant at 33–50% with demineralised water. Capacity is typically around 5 litres including the heater circuit, but it can vary slightly by engine and radiator design. Always check the vehicle’s service info or under-bonnet labels and measure what drains out as a guide.

Stick with one coolant chemistry, don’t mix green conventional with long-life formulas. If changing types, flush thoroughly until the water runs clear.

How often should the radiator coolant be changed?
For standard green coolant, every 2 years or 40,000 km is a safe bet. Long-life coolants can stretch to 5 years or about 100,000 km, provided they’re genuine long-life products and the system is in top nick. Harsh climates, short trips, or towing can justify shorter intervals.

If the coolant looks rusty, oily, or sludgy, change it sooner and investigate the cause—contamination can block the core and overwork the water pump.

What are signs the Gran Move radiator needs replacing?
Look for white or green crust around the end tanks, damp fins, persistent overheating at idle, repeated coolant loss, or swollen plastic tanks. A radiator that’s externally clean but runs hot even after a flush may have internal blockage.

If the vehicle is automatic and you find pinkish ATF in the coolant bottle (or vice versa), the internal trans cooler may have failed—replace the radiator immediately and service the transmission.