I was driving around yesterday and my temperature gauge was fine. Probably in the 35-45% range. I parked and came back out to the car and upon starting, the gauge jumped up to about 70-75% and HAS NOT moved at all since then. No leaks or anything. I come outside the next morning, which it is pretty cold now, and the gauge is still stuck!!! Very frustrating! I dont smell coolant or anything. I can take a paperclip and push the gauge back down to zero but it just spins right back up to the top again. Even with the car off. Any ideas?????
My car has 135000 miles.
My car has an automatic transmission.
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