Parts for your 1998 Daihatsu Gran move-Crank angle sensor

1998 Daihatsu Gran Move crank-angle-sensor: what it does and how to look after it

Yes, the 1998 Daihatsu Gran Move uses a crank-angle sensor. On these models (G30-series, also known as Pyzar), the crank-angle sensing function is built into the distributor on the common HC‑EJ 1.3 and HD‑EP 1.6 petrol engines, providing the ECU with NE and G signals for engine speed and position. This arrangement is documented in Daihatsu factory service literature for G30-series Engine Electrical/EC sections (1997–1999), Autodata Engine Management Systems coverage for Gran Move 1.3/1.6 (ignition: distributor with internal crank-angle sensor), and workshop guides covering Daihatsu distributor-type Denso systems.

In day-to-day terms, that crank-angle sensor is the little hero that tells the ECU exactly where the crank and cam are in their rotation, so it can fire the spark and inject fuel at the right moment. If the signal goes missing or wobbly, the Gran Move can be hard to start, stumble, misfire at cruise, or cut out when hot. The check lamp may log a crank/cam reference fault.

Because it’s integrated into the distributor, service is a bit different to a standalone sensor on the crank pulley. There’s no routine replacement interval for the sensor itself, but it’s smart to check the distributor during regular servicing:

• Inspect the distributor connector and loom for heat-hardening, oil contamination, or cracked insulation.
• Make sure the distributor shaft has no excess play and the seal isn’t leaking oil into the housing.
• If the cap and rotor are fitted (variant-dependent), replace them if worn, and keep the vent clear.

If the sensor fails, many workshops replace the distributor assembly or the internal pick-up module, depending on parts availability. Mark the distributor’s position before removal, disconnect the battery, and refit with a new O‑ring. After installation, set base timing with a timing light using the correct service bridge/diagnostic mode per the Daihatsu procedure, so the ECU and mechanical timing are in sync. On variants that use a separate crank sensor at the timing cover (less common for 1998 Gran Move in AU/NZ), ensure correct air gap and keep the trigger wheel free of metal debris.

A healthy timing belt is part of the picture too, if the belt is stretched or a tooth out, the ECU’s reference will be off, and you’ll chase your tail. Keep the belt and tensioner on schedule and the Gran Move will run sweet as.

• Is the crank-angle sensor separate or inside the distributor on a 1998 Gran Move?
  Most AU/NZ 1998 Gran Move models use a distributor with the crank-angle sensing function built in. That unit feeds the ECU with engine speed and position signals. Some later or market-specific variants can have a separate sensor near the crank pulley, but that’s not the usual setup for 1998 here.
• What symptoms point to a failing crank-angle sensor on a Gran Move?
  Hard starting, random stalling when hot, intermittent no-spark, rough idle, and misfires at steady cruise are common. The engine light may be triggered with a reference signal fault. Check the distributor wiring and internal pick-up before swapping other parts.
• Should the crank-angle sensor be replaced as routine maintenance?
  There’s no scheduled replacement. Treat it as “inspect and test”: keep the distributor dry and clean, verify wiring integrity, and replace the pick-up or distributor only if testing shows a weak or missing signal, or if heat/oil damage is evident.