What Causes the Temperature Gauge to Stop Moving?

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The reasons for a non-moving temperature gauge include wiring issues, an open circuit in the gauge's power line, burnt-out heating coils in the gauge, burnt-out heating coils or poor contact in the temperature sensor, poor connection or open circuit in the sensor's wiring, or damage to the voltage regulator that supplies stable power to the gauge's circuit. Thermostat: Check if the heater is producing hot air. Feel the upper and lower radiator hoses to see if they are at the same temperature. It's recommended to inspect whether there is a thermostat issue. After confirming no problems with the thermostat, consider checking the sensor, wiring, and temperature gauge. It's likely the thermostat is damaged and stuck in the open position, causing the coolant to continuously circulate in the large loop. Impact: If the temperature gauge stops moving, the car can still be driven for a short period. This is because the issue might be with the gauge or the temperature probe, and as long as the radiator has sufficient coolant, normal driving won't be affected. However, it's advised not to operate the vehicle at full load until the issue is resolved.