Well I'm a bit over that mark by about 50k and to bad because I have to replace that this week. For my fellow Noob gotaudi the ECT is the Engine Coolant Temperature switch and don't worry I just learned that last week. By the way does anyone have a diagram of the electrical switch layout (to verify the location of my ect) for a 96 a4 2.8. I'm pretty sure I see it barried under a bunch of ac, coolant and vacuum hoses on the passenger side in one of the coolant hoses but I'd like to varify if I can.