Parts for your 2013 Nissan Pulsar-Thermostat

2013 Nissan Pulsar Thermostat — Purpose, Service and Replacement

Technical sources including the Nissan Pulsar B17/C12 factory service manual (Cooling System), the Nissan electronic parts catalogue, and major aftermarket catalogues (Dayco/Gates) confirm the 2013 Nissan Pulsar is fitted with a conventional, wax‑pellet engine coolant thermostat housed on the engine block. So yes — a thermostat is absolutely relevant and used on this model (MR18DE 1.8 petrol and MR16DDT 1.6 turbo variants).

The thermostat’s job is to get the engine up to its ideal operating temperature quickly, then keep it there. It stays shut while the engine warms up, helping with smoother running, better fuel economy, lower emissions, and quicker heater performance on chilly mornings. Once the coolant reaches the thermostat’s rated temperature (typically in the low‑to‑mid 80s °C range for many Nissans), it opens to let coolant circulate through the radiator and shed heat, preventing overheating. If it sticks open, the Pulsar can run too cool, chew more fuel, and throw a P0128 code, if it sticks shut, temps can spike and risk engine damage.

As part of regular servicing, it’s smart to keep an eye on the thermostat’s performance rather than wait for a failure. Many workshops will:

• Check warm‑up time and heater performance
• Monitor temperature stability on a road test and with a scan tool
• Inspect for leaks around the housing and hoses

Preventative replacement is often considered around 8–10 years or high kilometres, or any time there are symptoms. When replacing, use a quality thermostat matched to the factory opening temp and fit a new O‑ring/gasket. Refill with the correct long‑life coolant and bleed the system properly to avoid air pockets. It’s also a good moment to assess the radiator cap, hoses, and water pump for ageing or seepage. Most shops allow roughly 1–2 hours for the job depending on engine and access, and will torque the housing fasteners to spec to avoid warping or leaks.

Common signs it’s time to act on a 2013 Pulsar thermostat:

• Slow warm‑up, poor cabin heat, or a P0128 code (stuck open)
• Overheating, boiling in the reservoir, or fluctuating temp gauge (stuck closed or inconsistent)
• Visible leaks at the thermostat housing

FAQs

Where is the thermostat on a 2013 Nissan Pulsar?
It sits in the thermostat housing on the engine block, at the end of a main radiator hose. Access varies slightly between the 1.8 petrol and 1.6 turbo, but it’s generally reached from the front/top of the engine bay with the intake ducting out of the way.

What are the symptoms of a failing thermostat on a Pulsar?
Running cool, slow heater, or a P0128 code points to a stuck‑open unit. Overheating, coolant boil‑over, or erratic gauge swings suggest it’s stuck closed or sticking. Any of these warrant immediate inspection.

Do you need to bleed the cooling system after replacing it?
Yes. After refilling with the correct coolant mix, the system should be bled to purge air. Many techs elevate the reservoir, run the engine with the heater on, and top up as bubbles escape, then recheck the level once it’s cooled.