Temperature sending unit or thermostat

1999 CHEVROLET CAVALIER
170,000 MILES • 2.2L • 4 CYL • 2WD
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BUDDY CLYDE
  • MEMBER
  • 2 POSTS
Dashboard gauges are saying that it is overheating and it is going back and forth but it is not stalling out or leaking out any where. Wondering if I should replace temperature sending unit first and then the thermostat or not?
Aug 2, 2018 at 5:20 AM
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DANNY L
  • ✓Experienced Mechanic
  • 5,648 POSTS
Hello, I am Danny.

I have attached a picture of the coolant temperature sensor location. How long has it been since the thermostat has been replaced? Might be a good time to change antifreeze/coolant if it has been awhile as well. Since you will be losing antifreeze/coolant when replacing I would suggest doing both at same time to save time/money and only add coolant one time. I have attached a link showing how to drain/flush/and replace. Hope this helps and feel free to ask questions if needed. Thanks for using 2CarPros.

Danny-

https://www.2carpros.com/articles/coolant-flush-and-refill-all-cars
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Aug 2, 2018 at 8:49 AM
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BUDDY CLYDE
  • MEMBER
  • 2 POSTS
Thank you for your time and help I am going to do just also change thermostat and gasket.
Aug 2, 2018 at 2:17 PM
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DANNY L
  • ✓Experienced Mechanic
  • 5,648 POSTS
You are welcome!
Let us know if it all works out. We are here to help!
Thanks again for using 2CarPros.
Danny-
Aug 3, 2018 at 6:16 AM
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