Is it normal for coolant temp to fluctuate?
You need to know that a certain range of fluctuation is normal, but if the temperature fluctuates wildly, you’re looking at a problem with your cooling system. Depending on the symptoms, there are different parts of your car’s cooling system that could go wrong.
Why does my temp gauge work sometimes?
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.
Can you drive with a bad thermostat?
Most automobile mechanics will tell you it is not a good idea to drive your car without a thermostat installed. If your thermostat becomes stuck in the closed position, though, this will cause your engine to overheat and make driving your car impossible.
Will temp gauge work if thermostat is bad?
The first and potentially most alarming symptom will be the temperature gauge reading high into the red within the first 15 minutes of your vehicle engine running. This is often the very first sign that the thermostat is not functioning properly.
What kind of temperature sensor does a Subaru Outback have?
Now most vehicles use a two-wire temperature sensor and a one-wire sender that would be for the gauge. The other two-coolant sensor is for the computer. Subaru uses one dual function sensor so you will see a three-wire sensor.
What do you mean by temperature gauge is fluctuating?
Temperature gauge is fluctuating, sometimes showing overh… Q: Temperature gauge is fluctuating, sometimes showing overheating.
What to do if your Subaru coolant gauge is not working?
Check the fans are cycling properly and for proper operation of the thermostat. Next you need to read the coolant temperature sensor and if you have a scanner it makes it easy but if not, no worries you can just jump straight to the test you would have to do if you were having coolant temperature sensor problems anyways.