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Can the car be driven when the water temperature gauge shows 0 upon startup?

2 Answers
VonCorbin
07/25/25 3:18pm
Can the car be driven when the water temperature gauge shows 0 upon startup? However, it is recommended to warm up the engine for a few minutes. The specific explanation is as follows: If the car's water temperature gauge shows too low, it indicates that the vehicle's water temperature is too low, and the engine should be warmed up before starting the vehicle. Starting the vehicle with too low water temperature can lead to poor engine operation, damage to engine-related components, and increased wear on parts. The following are the hazards of an engine being too cold: The temperature of the mixed gas (or air) entering the cylinder is too low, the quality of the combustible mixed gas is poor, making ignition difficult or combustion slow, resulting in reduced engine power and increased fuel consumption. Water vapor in the combustion products is prone to condense into water and form acids with acidic gases, aggravating the erosion of the engine body and parts.
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MacKingston
08/11/25 9:24pm
It's normal for the temperature gauge to read 0 right after starting the engine since it's still cold. However, if it stays at 0 even after driving for half an hour, that's a serious issue. I've personally experienced this due to a stuck thermostat, causing the coolant to circulate wildly between the engine and the radiator without heating up. Driving under such conditions is extremely harmful to the engine—the oil remains thick and doesn't lubricate properly, leading to direct friction between the piston rings and cylinder walls, which can result in oil burning within a month. Additionally, if the engine temperature doesn't rise, the ECU will continuously increase fuel injection, causing fuel consumption to spike by up to 30%. I usually recommend driving slowly for about two kilometers first to see if the temperature gauge moves at all. If it doesn't budge, head straight to a repair shop to check the thermostat or temperature sensor—never push through a long drive under these conditions.
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