Why is my temp sensor not working?
The most common cause of faulty temperature readings is a broken coolant temperature sensor (CTS). The part, which is normally located near a vehicle’s thermostat near the base of the radiator (consult your owner’s manual or repair guide) can get gunked up and fail. Disconnect the temperature sensor’s wiring connector.
Does a temperature gauge have a fuse?
There will be a fused wire with voltage to the instrument cluster (your owners manual should indicate which fuse), but the temperature sensor is providing a variable “resistance to ground,” which the temperature gauge in the dash is reflecting.
What does it mean when your temperature gauge is not working?
The temperature sensor/sending unit is faulty. If this is the case your sensor will be reading the coolant temperature incorrectly and sending the wrong signal to the gauge. This could work in either direction and read as cool when it’s running hot or hot when it’s running cool. A malfunctioning circuit in the temperature gauge
Why does my water temp sensor read Hot?
If you ground the wire that goes from the temperature sensor to the temperature gauge, the gauge should read “hot”. Not sure about your machine, but on mine that wire is yellow/blue. If grounding that wire gives you a “hot” reading, then the sensor is bad.
How to test water temp sending unit or gauge?
If grounding that wire gives you a “hot” reading, then the sensor is bad. If grounding that wire does not give you a “hot” reading, then test the gauge. (1) One pin on the gauge should have 12V battery voltage (key on engine off).
What does a water temperature gauge tell you about your boat?
Your boat’s water temperature gauge provides important information about your engine. The gauge indicates your engine operating temperature and tells you whether the engine is in danger of overheating. Unfortunately, the marine environment can cause the gauge or the sender to fail.