Parts for your 2004 Nissan Pulsar-Throttle position sensors

2004 Nissan Pulsar throttle position sensor (TPS)

Based on the Nissan Pulsar N16 Factory Service Manual (2004, EC section), the Nissan FAST parts catalogue for QG16DE/QG18DE throttle bodies, and Gregory’s/Autodata coverage for the N16 series, the 2004 Nissan Pulsar sold in Australia and New Zealand uses a throttle position sensor mounted on the throttle body. It’s a cable-actuated throttle, and the TPS is integral to how the ECU meters fuel and timing. So yes—throttle-position-sensors are relevant and fitted to this model.

On the 2004 Pulsar, the TPS tells the engine computer exactly how far the throttle plate is opened. That signal (a smooth voltage sweep from near-closed to wide open) helps the ECU handle fuelling, ignition timing, deceleration fuel cut, and even auto-trans shift quality on equipped models. When the TPS goes out of whack, the car can feel doughy off the line, idle can hunt, fuel economy can slide, and the check engine light may pop up with codes like P0120–P0123.

Servicing-wise, the TPS doesn’t require regular replacement, but it does appreciate a bit of care. During routine servicing, it’s worth:

• Inspecting the TPS connector and loom under the bonnet for chafing, green corrosion, or loose pins.
• Cleaning the throttle body carefully. Avoid soaking the TPS in solvent—keep sprays away from the sensor housing.
• If diagnosing hesitation or flat spots, verifying the TPS signal with a scan tool or multimeter for a smooth rise from closed to open throttle.

Replacement is straightforward for most home mechanics. Remove the intake duct, unplug the sensor, and undo the small JIS screws on the TPS housing. Fit the new unit, align as per the service manual, and don’t overtighten—those screws go into soft alloy and the sensor body is plastic. After replacement or major cleaning, perform a throttle position and idle learn (Idle Air Volume Learn) with a scan tool, many techs can also do the manual pedal procedure documented in the FSM. That relearn helps stabilise idle and throttle response.

For best results, stick with quality OE-equivalent (Hitachi/Nissan) parts. As part of scheduled servicing every 20,000–30,000 kilometres, a quick visual check of the connector and a throttle body clean keeps the TPS happy and the Pulsar running sweet.

Does the 2004 Pulsar have a TPS or is it drive-by-wire?

It has a mechanical cable throttle with a separate TPS on the throttle body. That setup is confirmed in the N16 Factory Service Manual and common parts listings for the QG16DE/QG18DE engines used in AU/NZ models.

What are common TPS symptoms and fault codes on a 2004 Pulsar?

Hesitation, hunting idle, stalling coming to a stop, harsh auto shifts, and higher fuel use are typical. The ECU often logs P0120–P0123 or related TPS circuit/range/performance faults when the sensor or wiring is unhappy.

Does the TPS need calibration after replacement?

Yes—after fitting a TPS or cleaning the throttle, perform the throttle/idle learn routine. A scan tool makes it quick, though the manual pedal procedure from the FSM can also work. Skipping this step can leave the idle and off-idle response a bit ordinary.