-2.7l runs hot (Over Center) Upper rad hose warm, lower hose cold- I replaced the thermotat and temp gage went down for about a week. Now it hits half way on the temp gage as soon as it starts (Even after sitting overnight) When driving it creeps toward Hot and the light flickers. The upper hose is still hot but now the lower hose is warm rather than cold. Turning on the A/C makes no difference although the fan engages and has good pull. What is going on here?? Bad temp sensor? How can I take an actual temp reading?