Temperature gauge not working properly

Hi,

When started cold, it should be all the way to the cold side. The normal operating temperature (after it's warmed up) should be around 200 degrees F.

Here is a link that explains how a coolant temperature sensor works. You may find it helpful:

https://www.2carpros.com/articles/how-a-coolant-temperature-sensor-works

Let me know what is happening so I can better help.

Take care,

Joe

Hi,

Is the vehicle starting and running properly? If the gauge is that high when cold, either the coolant temperature sensor is bad or there is a short in the wiring.

Let me know if it is running properly.

Joe

Okay, chances are there is an issue with the sensor. By any chance, do you have access to a live data scan tool that can communicate with this vehicle? I have a feeling the sensor is causing too lean of a fuel mixture to start the engine cold because it is indicating the engine temperature to be at operating temperature.

If you look below, I highlighted the sensor in the pic. It should be on the driver's side under the hood on the engine end. Check to make sure the connector is good, tight, and there is no corrosion.

Let me know.

Joe

See pics below.

Hi,

If the engine doesn't reach operating temperature, yes, the thermostat may be stuck open. That will reduce heat. Also, if the coolant is low, that too can cause it. Make sure it isn't low. Also, it is common for a leak to be at the coolant temperature sensor.

I attached the directions below for replacing the thermostat. However, here is a link that shows in general how it's done. You can use this to help guide you.

https://www.2carpros.com/articles/replace-thermostat

Now, the temperature sensor on these is a bit unique. If you follow the radiator hose to the driver's side of the engine compartment, you will see the sensor. (See pic 10 below) What makes it unique is the way it is mounted. There is a plastic clip shaped like a U that holds it in place. (See pic 11) That needs gently removed and then the sensor will pull out. Make sure to remove the old O-ring and lubricate the new one with coolant before you install it. I had to go online to find some pics. I attached them below. They are the last two pics.

Since you need to drain the coolant for either of these procedures, I would replace both at the same time.

Let me know if this helps or if you have other questions.

Take care,

Joe

See pics below.