What is the issue with high temperature at idle speed?
2 Answers
Rust in the radiator causing poor water flow, unable to dissipate heat normally. Below is a related introduction about high temperature at idle speed: 1. Reasons for engine high temperature at idle speed: There is a water pump in the car's cooling system that forces the coolant to circulate. Additionally, there is a thermostat responsible for determining whether the coolant undergoes a small or large circulation. 2. Hazards of engine high temperature at idle speed: Due to prolonged idling, the engine temperature remains too low, leading to incomplete fuel combustion, which can easily cause carbon buildup, clog the fuel injectors, and severe carbon deposits may cause the piston rings to seize or even break. Prolonged idling also results in poor fuel atomization, where unburned atomized diesel condenses and washes down the cylinder walls, entering the lubricating oil, diluting and degrading it. This leads to insufficient lubrication for the engine's moving parts, accelerating engine wear.
I once drove an old car for a while and found it quite alarming when the engine temperature spiked at idle. Once during a traffic jam, the temperature gauge shot straight to the red line, so I immediately pulled over. Upon inspection, I found that a significant amount of coolant had leaked, likely due to aged and cracked hoses. The fan wasn't spinning properly either, and after testing, I realized the temperature sensor was faulty. Such issues are quite common, so it's advisable to regularly monitor the cooling system, checking fluid levels and fan operation. If frequent high temperatures at idle occur, it might be due to a stuck thermostat causing poor heat dissipation. Get it fixed at a professional shop as soon as possible—delaying repairs could lead to blown head gaskets, which poses significant risks. Remember, safety first—don't wait too long to address the issue.
