Fluctuating temperature gauge

JAM12345

MEMBER
2011 CHEVROLET IMPALA
3.5L
4 CYL
4WD
AUTOMATIC
220,908 MILES

My temperature gauge keeps on fluctuating, it starts in the middle and it almost goes up to the top. Back in May 2020 the water pump, radiator fan and new coolant were all replaced. What could this issue be?

Friday, December 18th, 2020 AT 5:14 PM

3 Replies

DANNY L

MECHANIC
5,648 POSTS

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.

Images (Click to make bigger)

SPONSORED LINKS

Was this

answer

helpful?

Yes

No

+1

Friday, December 18th, 2020 AT 8:41 PM

JAM12345

MEMBER
2 POSTS

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.

Was this

answer

helpful?

Yes

No

Friday, December 18th, 2020 AT 10:23 PM

DANNY L

MECHANIC
5,648 POSTS

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-

Was this

answer

helpful?

Yes

No

Friday, December 18th, 2020 AT 10:27 PM