Parts for your 2010 Nissan Pulsar-Temperature sensors

2010 Nissan Pulsar Temperature Sensors

Temperature sensors are absolutely fitted to the 2010 Nissan Pulsar. Technical sources that cover this model family and era (Nissan Factory Service Manuals for the G11/C11 platforms used in ANZ-market Pulsar/Sylphy/Tiida, Engine Control “EC” section, Nissan OBD‑II Diagnostic manuals listing ECT-related DTCs P0115–P0119 and IAT-related DTCs P0110–P0114, and Nissan wiring diagrams showing the coolant temperature sensor and the intake air temperature sensor integrated with the MAF) all document these sensors as standard engine management components.

On a 2010 Nissan Pulsar, temperature sensors do a lot more than feed the dash gauge. The engine coolant temperature (ECT) sensor tells the ECU how warm the engine is so it can set fuelling, ignition timing, idle speed and kick the radiator fans in at the right time. The intake air temperature (IAT) sensor—typically built into the mass air flow (MAF) unit on these cars—helps trim the fuel mix for hot summer days or chilly South Island mornings. Many autos also read transmission fluid temperature for shift quality and protection, and there’s usually an ambient air temp sensor for the HVAC. When these sensors read properly, the Pulsar starts cleanly, runs efficiently and keeps its cool under the bonnet.

They’re not a scheduled replacement item, but they’re worth a look at every service. A few quick checks go a long way:

• Scan tool cold vs. ambient: after an overnight sit, ECT and IAT should read close to outside temperature.
• Inspect connectors and looms for green corrosion, brittle insulation or oil/coolant wicking.
• If the IAT is part of the MAF, use proper MAF cleaner only—don’t touch the sensing element.

Common signs something’s off include hard cold starts, rich running, rough idle, poor fuel economy, radiator fans stuck on, a dead dash gauge, or a check engine light with ECT/IAT codes. If the coolant sensor’s faulty, replacement is straightforward for a competent home mechanic:

1. Let the engine cool completely and disconnect the battery.
2. Drain a little coolant, unplug the connector, remove the sensor and sealing washer.
3. Fit an OE-quality sensor with a new washer/O‑ring, reconnect, then refill and bleed the cooling system.
4. Verify no leaks and confirm live data shows normal temperatures (about 85–95 °C at operating temp).

Use the correct Nissan long-life coolant and never overtighten the sensor—follow the service manual torque spec. With simple checks and timely replacement when needed, the 2010 Nissan Pulsar’s temperature sensors will keep the engine happy for many more kilometres.

Technical sources referenced: Nissan Factory Service Manual (EC section) for G11/C11 platform vehicles of this period documenting ECT and IAT sensors, Nissan OBD‑II DTC manuals listing P0110–P0119, Nissan wiring diagrams showing MAF‑integrated IAT and two‑wire NTC ECT sensor to the ECM and instrument cluster via CAN.

Popular questions about 2010 Nissan Pulsar temperature sensors

Where is the coolant temperature sensor on a 2010 Nissan Pulsar?
On most 2010 Pulsar variants, the ECT sensor threads into the thermostat housing or cylinder head near the upper radiator hose outlet. It’s a two‑pin plug. The dash gauge usually reads the same value the ECU sees—there isn’t a separate sender like older models.

What symptoms point to a bad temperature sensor?
Look for long cranking when cold, rich fuel smell, poor economy, rough idle, fans running when the engine is cold, a lifeless temperature gauge, or a check engine light with codes such as P0115–P0119 (ECT) or P0110–P0114 (IAT). Live data that never changes or reads wildly off ambient is another giveaway.

Can it be driven with a faulty temperature sensor?
It might still run, but it’s not wise. The ECU can default to rich mixtures, which ups fuel use and can damage the catalytic converter. Cooling fan control may be wrong, risking overheating. It’s best to diagnose promptly and replace the sensor if confirmed faulty.