What Causes High Engine Temperature When Climbing Hills?

[VonJayden]

The main reasons for high engine temperature when climbing hills are as follows: High temperature gauge reading: When stuck in traffic or idling for extended periods, the engine temperature gauge shows excessively high readings, the electric fan operates at high speed for too long, engine noise increases, and this issue is most noticeable when using air conditioning in hot weather. Unstable idle: When using air conditioning in hot weather, the idle becomes unstable with significant RPM fluctuations, poor acceleration response, and abnormal engine noises. Engine stalling while driving: The engine may be difficult to start after stalling for over ten minutes. Sometimes the engine may stall automatically while driving when warmed up. Poor cooling performance: Air conditioning works well when the engine is cold but performs poorly when the engine is hot. Additionally, there may be noticeable resonance humming in the air conditioning system.