Parts for your 1999 Nissan Pulsar-Crank angle sensor

1999 Nissan Pulsar Crank Angle Sensor — Fitment, Purpose and Servicing

Based on technical references — Nissan Pulsar N15 Series Service Manual (EC/Engine Control sections), Nissan SR20DE and GA16DE factory literature on distributor assemblies, and independent workshop guides such as Gregory’s Manual 517 (Pulsar N15, 1995–2000) and Autodata — the 1999 Nissan Pulsar (N15, GA16DE 1.6L and SR20DE 2.0L) is fitted with a crank angle sensor. On these engines, the sensor is integrated into the distributor as an optical sensor, sometimes also described as a cam angle sensor but referred to by Nissan as a Crank Angle Sensor (CAS). It is therefore relevant and used on this model year.

The crank angle sensor on a 1999 Pulsar is the quiet achiever behind clean starts, smooth idle, and crisp throttle response. Sitting inside the distributor, the optical disc and pickup feed the ECU exact engine speed and position, allowing precise control of ignition timing and fuel injection. Because the sensor provides both 360° and cylinder reference signals, it effectively tells the ECU when each cylinder is ready to fire — a big deal for performance and economy alike.

It isn’t a regular service item like plugs or filters, but age, heat, and oil vapour can take their toll. Common clues the CAS is on the way out include a hard start when hot, random misfires, a dead tachometer during cranking, or a sudden no-start. The ECU may log P0335 (crank) or P0340 (cam) style faults on OBD-II scanners because the distributor-mounted sensor handles both roles.

Replacement is straightforward for a competent home mechanic. Most shops simply replace the complete distributor for reliability, but the sensor/plate can be serviced in some variants. Always mark the distributor’s position relative to the head before removal so base timing stays close. After refit, warm the engine and put the ECU into timing mode (per N15 service manual procedure), then set base ignition timing with a timing light to spec (commonly around 15° BTDC for GA16DE/SR20DE, verify for the exact engine). A fresh O-ring on the distributor body helps prevent oil weeping into the housing and onto the optical disc.

• Checks worth doing at service time:
  • Inspect the distributor plug and loom for brittle insulation or green corrosion.
  • Look for oil inside the distributor cap — any contamination can upset the optical pick-up.
  • Confirm idle quality and timing stability with a timing light.

Treat it well and the CAS will clock up plenty of kilometres, keeping the Pulsar perky on the daily commute or a weekend fang alike.

Popular questions

Where is the crank angle sensor on a 1999 Pulsar?
On N15 GA16DE and SR20DE engines, the CAS is built into the distributor. Pop the bonnet and look at the distributor on the end of the camshaft, the sensor lives under the cap/rotor within the housing. Many workshops replace the complete distributor assembly when the CAS fails for a long-term fix.

Do you need to re-time the engine after replacing the CAS or distributor?
Yes. Even if the distributor is marked before removal, base ignition timing should be checked and set. Warm the engine, enter ECU timing mode as per the N15 manual, and use a timing light to dial it to the factory spec (often about 15° BTDC for these engines). This keeps starts crisp and deters pinging under load.

Can a bad CAS cause a no-start on a Pulsar?
Absolutely. A failed CAS can leave the ECU “blind” to engine position, so you’ll get no spark and no injection. It may be intermittent at first — stalling when hot or cutting out randomly — before becoming a complete no-start. Scanning for P0335/P0340-type faults and checking for oil contamination in the distributor helps confirm the diagnosis.