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It began to seriously overheat. I suspected a leaking radiator?

Tiny
JGDERUVO
  • MEMBER
  • 2001 SATURN
Started going through coolant about 3 days ago. Last night it began to seriously overheat. I suspected a leaking radiator. Since it was night and I was stuck on the road, I put some Leak Fix powder in and filled with water to get me home. Initiallly, after about 3 miles, it hit the red again. I stopped, let it cool down, and put in some more coolant. But not much.

On the way home, it actually went DOWN in temperature. Could this be a stuck thermostat?
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Sunday, November 25th, 2007 AT 4:17 PM

1 Reply

Tiny
SQM
  • MECHANIC
  • 6,383 POSTS
Hello,

When an engine overheats, due to excessive pressure many times you will have a leak from a ruptured hose or blown radiator cap. You first check to see where is it leaking from.

One of the common cause of over heating is a stuck thermostat. And yes it can start to work normal again for a little while until it will fail again.

You might find these articles helpful:

https://www.2carpros.com/articles/how-an-engine-thermostat-works
https://www.2carpros.com/articles/replace-thermostat

I have attached the diagrams for your reference.

Please let me know of any questions.

Thank you.
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Thursday, August 19th, 2021 AT 3:05 PM

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