I have a 2004 Ranger with the 3.0L engine. My temperature gauge is doing strange things and I am trying to find out why. It will go up and down fairly rapidly. It never shows to get hot, but fluctuates within the operating range. I am wondering if the temperature sensors need to be replaced. Can anyone tell me specifically where they are? Also, any other ideas as to what would cause this? I have replaced the thermostat already.
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