How to Solve Low Coolant Temperature in Nissan Patrol?

[Juliet]

Solutions for low coolant temperature in Nissan Patrol: After starting the vehicle, allow the engine to idle at high speed automatically. Wait until the idle speed drops to the normal level before driving. Before the coolant temperature reaches the normal range, avoid exceeding 2,500 RPM, keep engine load below 30% (do not press the accelerator pedal beyond one-third of its travel), and refrain from aggressive driving such as sudden acceleration or hard braking. Only resume normal driving after the coolant temperature reaches the optimal range (80-90°C). The main causes of low engine temperature in Patrol are: 1) A faulty thermostat that fails to close, keeping the engine cooling system in constant circulation mode, preventing proper warm-up. 2) Malfunctioning cooling fan running continuously. The Nissan Patrol's body dimensions are 5140mm (length) × 1995mm (width) × 1955mm (height), with a wheelbase of 2850mm.