fluctuating temperature gauge

Hello, I'm Danny.

Have you noticed if the car is overheating? Is it running at normal temperature or boiling over? Otherwise it sounds like you might have a faulty coolant temperature sensor. Here is a tutorial showing how a coolant temperature works and symptoms
for you to look at:

https://www.2carpros.com/articles/symptoms-of-a-bad-coolant-temperature-sensor

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

The coolant temperature sensor is located on the back of the engine near firewall in the back of the left cylinder head. I've attached picture steps below on how to replace for your car. It shows the location also. Hope this helps and thanks for using 2CarPros.

My car is not overheating and it's running normal temperature, but it will get to normal temperature then it will get close to the H. I'm going to read more info about your answer. I appreciate it.

You're welcome!

Let us know if you have any more questions on this issue. Thanks again for using 2CarPros and we hope you will use our site again in the future.

Danny-