What is the reason for the temperature gauge not moving?

[DiJulian]

The reasons for the car temperature gauge not moving are: broken power line of the temperature gauge, burnt electric heating coil of the temperature gauge, burnt electric heating coil of the temperature gauge sensor, or poor contact of the contacts. Solutions for the car temperature gauge not moving: First, check if the wire ends are broken or loose. If there is no power failure or looseness, it is either the temperature sensor or the instrument that is damaged. You can unplug the temperature sensor plug and ground the wire of the plug, then turn on the key to see if the temperature gauge on the instrument moves. If it moves, the temperature sensor is damaged; if it doesn't move, replace the instrument. Consequences of excessively high car temperature: High temperature accelerates wear and is not conducive to lubrication; it can cause piston ring scuffing faults, and in severe cases, permanent damage to the engine; it can cause the radiator to burst; it can lead to deformation or even damage of the cylinder head and cylinder block.

[DelAugust]

I've encountered the issue of a non-moving temperature gauge while repairing cars, most likely due to a faulty sensor. The sensor is responsible for detecting coolant temperature, and once it fails, the gauge gets stuck at a fixed position. Another possibility is poor wiring contact, where aged wires become loose or short-circuited. A blown fuse is also a common cause, especially under excessive current. Another rare possibility is a malfunction in the dashboard itself. A non-moving temperature gauge is quite dangerous because you can't monitor whether the engine is overheating. Overheating can cause severe engine damage, leading to extremely costly repairs. I recommend first checking the fuse box and trying a spare one to test. If there's no change, inspect whether the sensor's wiring is dusty or loose. If you still can't fix it, drive to a professional repair shop immediately—don't risk driving with the issue unresolved.

[DiIsabela]

There are usually several common factors when the temperature gauge stops working. As an experienced driver, I consider this a minor issue in the cooling system. The most likely cause is a faulty temperature sensor that fails to transmit accurate data to the gauge. Wiring problems should also not be overlooked, as corroded or broken connectors can interrupt the signal. Another possibility is a blown fuse, which often occurs when headlights or air conditioning are used frequently. A more serious but less probable scenario is a malfunction in the instrument cluster. When the temperature gauge stops working, the engine might be overheating. If not detected in time, excessively high temperatures can damage the cylinder head. I learned this the hard way when I was younger, so now I make it a habit to regularly check the coolant and gauges. For simple troubleshooting, check if the gauge backlight is on. If it's lit but the needle isn't moving, it's likely a sensor or wiring issue; if it's not lit, suspect the fuse. Safety first - don't force repairs if you're unsure.

[DeMiranda]

It's really annoying when the temperature gauge doesn't move. I suspect it's a sensor issue - those things are located near the radiator and can easily get baked. Worn or short-circuited wiring can also interrupt the signal, causing the gauge to freeze. A blown fuse is another common culprit that's easy to check. A stuck temperature gauge is worrying because you can't tell if the engine is overheating, which is especially dangerous at highway speeds. It's best to check if the coolant level is normal. Regular maintenance can help prevent these kinds of failures.