Earlier after I had been driving at about 70 mph for 15
minutes my temperature gauge shot up really fast. I turned
on the heat and slowed down. After a few minutes the
temperature went back down. A couple hours later on my
way home the same thing happened almost exactly the
Someone told me this could be the thermostat. Does that
sound right? I appreciate any advice, thank you.
That does not sound like a thermostat problem. First check the coolant level and top it off but if that does not do it then service the cooling system.
Also make sure your fans are working.
I forgot to mention that it would go down pretty suddenly then periodically go back up and down. Coolant level loomed fine.
If that is the case it may just need a new temperature sensor. Sounds like the fans do not come on early enough, sounds like they are working if the temp. drops suddenly.
Still could be a sticky thermostat tho.
The check engine light never came on. Is that relevant at all?
Yes and no. Sounds like the temperature gauge has not gotten to the red zone. Check the fans by taking it for a ride then parking it in your drive with the engine running, cabin temp. set on cool, and watch the temperature gauge and see when the fans kick in. It is either low coolant, thermostat starting to go bad, temperature sending unit, or maybe the water pump, thats not high on the list.
Checked again this morning. I haven't driven the car since Saturday. The coolant reservoir was pretty much empty. I'm taking it to the shop Wednesday.
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