Stuck closed thermostat. Replace the thermostat.
If the temp gauge reads normal and the engine is not overheating, the thermostat is doing its job. The thermostat maintains the coolant temp by opening and closing allowing the coolant to flow or not to flow. When it is closed the coolant doesn't circulate.
the coolant temp sensor( cts) reads the temp of the engine and adjust the fuel air mixture depending on the temp. if its cold out the sensor will adjust for more fuel to ease the start of the engine. ADDITIONAL: The Coolant Temperature Sensor measures the temp of the coolant, not the engine. The sensor controls the thermo fans on/off. depending upon temperature. The actual engine temperature sensor is on top of the engine and does not control the fans. If the fans do not switch on at any temperature, disconnect the 2 wire connector from the sensor (Usually at the bottom of the radiator) If fans start up with connector disconnected, replace the sensor.
the fuction of the temp switch. is to comunicate with your car computer and register the temperature on your cars gauge. to let you know how hot your car is running or if its at risk of over heating. whitch if occurs can cause very expensive repairs
350ºF = 176.7ºC
Temp. Celsius = Temp. Kelvin - 273.15
Test gauge function with a mechanical gauge to get actual engine temp.
If the temp gauge reads normal and the engine is not overheating, the thermostat is doing its job. The thermostat maintains the coolant temp by opening and closing allowing the coolant to flow or not to flow. When it is closed the coolant doesn't circulate.
Because the temp gauge is not giving you the temperature of the water/steam in the radiator. You may have a bad head gasket or a cracked head causing the coolant to have that boiling effect.
Sounds like you need a new radiator cap, you can get the cap tested to see if it is holding the rated pressure.
Broken Temp guage
low coolant and/or radiator leak or maby a bad temp sensor low coolant and/or radiator leak or maby a bad temp sensor
A clog in the radiator will do this.
Center of radiator at the bottom and right in front. cant miss it
check the fins on the radiator if they are loose you need to replace it
Yes
why doesn't my rpm gauge and temp gauge, fuel gauge not work
A low coolant level could cause the temp gauge not to read correctly. A faulty temp gauge sending unit could also be the cause. The coolant leak, you would have to find the source of the leak to determine the cause.