I am having the same problems. I have found a couple of interesting things: First, there is a special procedure for bleeding down the cooling system, it says to consult the dealer for details in the manual out of glove box. I will add that it says it is imperative to do so. Just go to ask. Com and put in special proceedure for coolant on a 2.7. I am hoping that is the problem for me.
I have just boiled the thermostat in water on the range with digital thermometer, they both checked good (new and old). This is very strange. I have also noticed the temp gauge in the car is not reaching HOT, a matter of fact the thing is setting about half way. My thoughts were that the system is not bleed correctly and there is a air pocket somewhere keeping it from circulating through the upper housing where the temp sensor is, ( not even letting the fans kick on) if this is so, I am hopping that I never over heated enough to cause damage to say the oil pump, heads, gaskets, etc. Well, I am awaiting a part, (timing chain tensioner) from ebvay. Then I will know more. These are just my thoughts and findings to this point.
I would recommend being very leery of running and thinking the inside temp says fine and well, check your lower radiator hose. Mine is cold, that is not good. This lead me to pulling the water pump(NIGHTMARE:(((( Turned out the water pump was fine, but the seal was a little rough and the tensioner had a little build up on it. Please keep this going and let me know what you all find. Thanks in advance! I will do the same.
Monday, February 4th, 2013 AT 2:59 AM