Parts for your 2000 Daihatsu Gran move-Radiator cap

Radiator cap for 2000 Daihatsu Gran Move

Technical references including the Daihatsu Pyzar/Gran Move workshop manual (Cooling System section), the Daihatsu Electronic Parts Catalogue (EPC), and AU/NZ parts catalogues such as the Tridon Radiator Cap Application Guide and Gates Cooling System Cap listings all identify a serviceable, pressurised radiator cap fitted to the 2000 Daihatsu Gran Move. It’s a conventional cap-on-radiator setup with an overflow bottle, typically using a cap rated around 0.9 bar (about 13 psi), depending on market spec. So yes—this vehicle does use a radiator cap, and it’s a relevant maintenance item.

The radiator cap on a 2000 Gran Move isn’t just a lid, it’s a pressure valve that keeps the cooling system sealed and at the right pressure so the coolant’s boiling point is raised and heat can be carried away reliably. It also controls expansion and contraction: when the engine’s hot, excess coolant is directed to the overflow, when it cools, vacuum draws coolant back in. That little two-way job stops air sneaking into the system and helps prevent corrosion, hot spots, and overheating under load.

As part of regular servicing, it’s smart to inspect or test the cap every 10,000–15,000 kilometres and replace it every 2–4 years, or sooner if it fails a pressure test. A workshop can check it with a cap tester to confirm it holds the specified pressure and seals properly. Always match the correct pressure rating and neck style for the Gran Move—most AU/NZ listings specify around 0.9 bar, but checking the under‑bonnet label or the cooling section of the manual is the safest bet.

Signs the cap may be on the way out include:

• Coolant loss into the overflow bottle or onto the ground
• Collapsed upper hose after cool-down (vacuum valve not working)
• Overheating at highway speeds or under load
• Crusty deposits or dampness around the filler neck

Quick tips for care:

• Only remove the cap when the engine is stone-cold—twist to the first stop to vent any residual pressure.
• Inspect the rubber seals for nicks, hardening, or swelling, replace the cap if anything looks off.
• Keep the filler neck clean and free of corrosion so the seals can do their job.
• Use the correct coolant type for Daihatsu of this era (commonly a quality green ethylene glycol IAT) and change it on schedule, mixed or old coolant can damage seals and seats.

For everyday driving in Aussie and Kiwi conditions—or if the Gran Move tows or tackles hills—a fresh, correctly rated cap is cheap insurance. Stick with reputable brands commonly listed for this model in local catalogues, and consider keeping a spare in the boot for long trips.

Popular questions about 2000 Daihatsu Gran Move radiator caps

What pressure radiator cap does a 2000 Gran Move use?
Most AU/NZ applications call for a 0.9 bar (13 psi) cap for the Gran Move. Always confirm against the under‑bonnet sticker or the cooling system section of the workshop manual, as some markets list minor variations.

Where is the radiator cap on a Gran Move?
It’s on the top tank of the radiator at the front of the engine bay, with the coolant overflow bottle nearby. Look for the round metal cap with warning text—never open it hot.

How often should the radiator cap be replaced?
Have it checked every service and replace every 2–4 years, or immediately if it fails a pressure test or shows damaged seals. If you’re chasing intermittent overheating or unexplained coolant loss, a fresh, correct‑rating cap is a quick and affordable fix to rule out.