When the car is ice cold and its the same temp as outside temp and you know the outside temp. There is a coolant temp sensor with two wires going to it a black wire and a yellow wire the sensor is screwed into the head right below where the upper radiator hose goes onto the head. Unplug the sensor and measure its resistance across the sensor. Also the inside of the connector going into it see if the terminals are silver and not blue or green if there blue or green you will have to replace the connector. Or you can just try replacing the sensor there only like 10 and inspecting the connectors and wires going to it.
Saturday, November 5th, 2011 AT 3:34 PM