Parts for your 1999 Daihatsu Gran move-Ignition coils

1999 Daihatsu Gran Move ignition coils

Based on manufacturer workshop literature and reputable parts catalogues for the 1999 Daihatsu Gran Move sold in Australia and New Zealand, this model uses ignition coils and they’re a relevant service item. Depending on engine and market, it’s fitted with either a single coil feeding a distributor and leads, or a coil-pack/individual coils driving the plugs directly.

The ignition coil’s job is simple but critical: it steps up the battery’s 12 volts to the tens of thousands needed to jump the spark plug gap and ignite the air–fuel mix. On a 1999 Gran Move, healthy coils mean easy cold starts, a smooth idle, decent fuel economy and clean emissions. Whether it’s a single coil with a distributor or a multi-coil setup, keeping the ignition side tidy pays off.

When servicing, it’s smart to treat the coils and plugs as a team. If fitting new spark plugs, inspect the coil boots (or the high-tension leads on distributor models) for cracking, tracking marks or oil contamination. A light smear of dielectric grease on boots helps sealing and future removal. Avoid yanking on leads, grip at the boot. For distributor versions, also check the cap and rotor for wear and moisture.

Typical signs the Gran Move’s coil(s) need attention include:

• Misfire under load or at idle, hard starting, or a rough, lumpy feel
• Poor fuel economy, lack of power, or backfiring
• Check Engine light with misfire codes (P0300–P0304)

Coils aren’t a scheduled replacement item, but heat and vibration age them. Many last well past 150,000–250,000 kilometres, if symptoms appear, test primary/secondary resistance against workshop specs and confirm with a scan-tool misfire counter. If one coil in a multi-coil setup fails on a high‑kilometre vehicle, it can be sensible to replace the set. Always match the part to the VIN/engine code to get the correct connector and mounting.

DIYers should disconnect the battery, label any leads, and refit fasteners to the proper tightness. After replacement, clear any fault codes and road‑test. Keeping oil out of the plug wells (fixing a weepy rocker cover gasket if needed) will dramatically extend coil and boot life. Quality OEM‑equivalent coils from known brands are worth the extra few dollars for reliability.

How many ignition coils does a 1999 Gran Move have?

It varies by engine and market. Some versions use a single coil feeding a distributor and leads, while others use a coil‑pack or individual coils per cylinder. The easiest way to confirm is by checking the VIN/engine code or visually inspecting the top of the engine for a distributor and leads versus coils on or near the plugs.

Should the coils be replaced when changing spark plugs?

Not by default. On a healthy system, just inspect coil boots (or leads) for cracks, tracking or oil, and replace any suspect pieces. If the vehicle has high kilometres or an intermittent misfire history, proactive replacement of worn boots/leads and cleaning the coil contacts while fitting new plugs is good practice.

Can a failing ignition coil damage the catalytic converter?

Yes. A persistent misfire lets unburnt fuel reach the cat, overheating and poisoning it. If the Check Engine light is flashing or there are misfire codes, avoid extended driving and sort the coil/plug issue promptly to protect the converter.