Hi c22munsey. Welcome to the forum. Good test grounding the wire, but do you really mean the gauge went to "normal" or did it go all the way to the top? If it only went to the normal range, there is excessive resistance in that wire or the gauge isn't working properly. It should have gone to maximum.
Do you have access to a scanner that will read live sensor data? That will show what the Engine Computer is seeing from its coolant temperature sensor. If it is also low, try pinching the upper radiator hose to slow coolant flow through the radiator. If that brings the temperature up to normal, look for coolant bypassing the thermostat.
There are a lot of people here who would be happy to trade places with you. Lots of overheating issues, very few too cold concerns. :)
Tuesday, July 6th, 2010 AT 2:15 PM