Parts for your 1998 Nissan Pulsar-Camshaft sensor

1998 Nissan Pulsar camshaft sensor: what it is and how to service it

Based on technical references including the Nissan N15 Pulsar Factory Service Manual (EC section for GA16DE and SR20DE) and trade data from Autodata/Haynes, the 1998 Nissan Pulsar does use a camshaft position sensing system. It isn’t a stand‑alone sensor on the cylinder head, it’s an optical cam/crank angle sensor built into the distributor and driven by the camshaft. Nissan often labels this unit “Camshaft Position (PHASE) / Crank Angle Sensor” in the distributor. So yes, the function is fitted—just integrated rather than separate.

On the ’98 Pulsar, that distributor-mounted sensor tells the ECU which stroke each cylinder is on and provides precise engine speed and position signals. The ECU uses this for sequential fuel injection, ignition timing, and clean cold starts. If the signal goes wonky, expect poor starting, rough idle, flat spots under load, higher fuel use, and a Check Engine Light—often logging codes like P0340 (camshaft position circuit) in OBD-II capable markets.

Servicing is straightforward and suits normal maintenance under the bonnet. Because the sensor lives inside the distributor, replacement usually means fitting a complete quality distributor assembly (many workshops in AU/NZ do this rather than rebuilding the optical module). After installation, base ignition timing should be checked and set to spec using the correct ECU timing mode as outlined in the Nissan FSM. A fresh distributor O‑ring is a smart move to prevent oil seepage that can contaminate the optical window.

• Tell-tale symptoms: long crank/no start, intermittent misfire, surging at cruise, and stored P0340.
• Quick checks: inspect the distributor plug and loom for brittle insulation, oil inside the cap, and shaft play that can skew the optical read.
• Replacement tips: mark the old distributor’s position before removal to help preserve timing, torque the mounting bolts evenly, verify timing with a light once in ECU timing mode per the FSM.
• Parts quality: opt for OEM or a reputable aftermarket unit—cheap copies can deliver noisy signals and recurring faults.

Look after the basics—sound battery voltage, tidy earths, and clean connectors—and the Pulsar’s cam angle sensor in the distributor will keep the engine running sweet as for many more kilometres.

Popular questions about a 1998 Nissan Pulsar camshaft sensor

Does a 1998 Nissan Pulsar have a separate camshaft sensor?
No. On the N15 Pulsar, the camshaft position function is built into the distributor as an optical cam/crank angle sensor. There isn’t a separate external cam sensor on the cam cover like later models use.

What are common signs the Pulsar’s cam sensor (in the distributor) is failing?
Typical signs include hard starting, random misfires, poor fuel economy, and a Check Engine Light—often with a P0340 code. Oil inside the distributor or worn shaft bearings can also upset the optical signal.

Can the sensor be replaced on its own, or is a full distributor swap better?
While the internal module can sometimes be sourced, most workshops in Australia and New Zealand prefer replacing the full distributor for reliability, then setting base ignition timing to factory spec.