Q: Why does my temperature gage show the engine over heating when it really isn't? on 2000 Dodge Caravan

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Also my AC starts to blow just cool air when the temperature gage starts to rise in the hot zone. I have a 2000 dodge caravan. I'm not sure but it seems to happen sometimes when i'm driving over 45mph. I turn of AC and slow down and the temperature gage goes back to normal and the AC will blow cold air again until the scenario happens again, whic is frequently.
(1) Answer
(5) Comments
There's no problem with those either. Someone suggested the coolant temperture sensor. Could that cause a problem?
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