Josh,
It could be the sensor, but it sounds like it isn't. To me, it the gauge is good and a warning comes up, it sounds more like a short. Have the computer scanned at a nationally recognized parts store. See if there are any codes stored in the computer. Most parts stores will do it for free.
Let me know what you find. Also, do the cooling fans come on when this happens?
Joe
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Sunday, December 21st, 2008 AT 10:52 PM