Hey there. I have a 2002 Ranger xlt 2.3 5speed and in the spring i ended up replacing the thermostat, housing and hoses. The truck has run like a champ. The past couple of weeks I have the issue with the temp guaging rising until it nearly hits the overheating mark but before it does, it mysteriously drops down rapidly to the normal level and this process keeps repeating itself every time i drive it.
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