Parts for your 2000 Daihatsu Gran move-Knock sensor

2000 Daihatsu Gran Move – Knock Sensor: Is it there, and does it matter?

For the 2000 Daihatsu Gran Move (also known as the Pyzar in some markets), a knock sensor isn’t fitted from factory. This isn’t just folklore — it lines up with period documentation: the Daihatsu Pyzar/Gran Move G303/G313 workshop manual’s engine control and wiring diagrams don’t show a knock sensor circuit, the Daihatsu Electronic Parts Catalogue (G300 series, AU/NZ/JDM) carries no listing for a “Sensor, Knock” on the HE‑EG/HD‑EP engines, and mainstream service guides of the era describe an ECU‑controlled distributor ignition without knock control hardware.

Why no knock sensor? In 2000, this model’s small-capacity, low-to-moderate compression engines were tuned conservatively for regular unleaded, so the factory timing maps were designed to be safe across Aussie and Kiwi fuels without needing real-time knock feedback. Emissions and OBD requirements for this platform and segment didn’t mandate knock monitoring either, keeping the control system simpler and cheaper. The ECU uses inputs like MAP, TPS, RPM and coolant temp to set spark, with a fixed base timing procedure rather than adaptive spark via a piezo knock sensor.

What should owners do instead? If the Gran Move ever pings under load, that’s a sign to look at maintenance rather than a failed sensor. Helpful checks include:

• Confirm base ignition timing with a timing light and the proper diagnostic-connector procedure for setting base timing.
• Use fresh, quality 91–95 RON fuel, if it rattles on hot days or towing, try a higher octane.
• Inspect for vacuum leaks, carbon build-up, a lazy EGR (where fitted), and clogged cooling systems that raise combustion temps.
• Keep plugs, leads and the distributor in good nick, weak spark can encourage detonation.

There’s no knock-sensor to replace or service on this vehicle, so there’s no part to source or maintain in that regard. If someone’s selling a “Gran Move knock sensor”, it’ll almost certainly be a generic item not intended for this engine/ECU combo. If advanced knock control is a must (e.g., turbo conversions), it typically calls for an aftermarket ECU that supports a knock input and the correct block-mounted sensor — not a plug‑and‑pray retrofit to the stock loom.

Popular questions about the 2000 Daihatsu Gran Move knock sensor

Does the 2000 Daihatsu Gran Move have a knock sensor?
Short answer: no. Factory documentation and parts catalogues for the G300‑series Gran Move show no knock sensor on the HE‑EG/HD‑EP engines, and the wiring diagrams don’t allocate a pin or circuit for one.

Can I retrofit a knock sensor to my Gran Move?
Not practically with the stock ECU — it doesn’t have a knock input or strategy to use the signal. For true knock control you’d need an aftermarket ECU that supports knock sensing, a suitable sensor mounted to the block, and proper calibration.

What should I do if I hear pinging or rattling under load?
Use quality fuel, check and set base timing correctly, and rule out vacuum leaks, carbon build-up, overheating, or weak ignition components. If it still pings, step up to 95 RON for hot weather, heavy loads or hills.