OK, I appreciate any help here. I have a 2002 T-bird. Some time ago, I fixed the grounding issue that usually causes the temp light to come on. But more recently I took care of some of the usual oil leaks, and it required moving a coolant tube, thus I drained out a lot of coolant. I got everything back together, and forgot to add coolant. So I went on a 160 mile ride with no problems, but got to town and the temp light came on for several minutes before I came to my destination. I thought it was probably the ground issue again at the time. I drove it the 160 miles home and then realized the coolant issue. Now every little thing makes me worried that I really toasted the engine - I hear a "ting ting" in the left exhaust and think "either it's one of the loose nuts rattling in the exhaust as I heard some do at times, OR did I burn a valve?" And this morning the one coil didn't want to work - the tach went to zero and it ran like crap for a couple minutes, then suddenly was fine. And I think, "OK, maybe the coil connections need tightening (I have nologys) or I fried something when it overheated...." Also, I wonder if there is low coolant, does the sensor for the light even work, or could it have overheated more and longer than those few minutes the light was on? Any thoughts? Thanks in advance!