I installed the WT665 a couple of days ago, and I'm not really happy with it. It appears that the calibration is different than it was with my original sender. With my old sender (before it died), highway cruising at moderate outside temperatures put the temperature gauge at about the RM of NORMAL. Now, with the new sender, highway cruising puts the gauge at A in NORMAL. I suppose that's not really bad, except that now I don't know what the gauge has to read for me to recognize that the engine is overheating.

95 Contour Zetec, ATX (wrecked, sitting in the barn) 95 Mystique Zetec, MTX 2000 Taurus SEL 3.0L Duratec 1994 Crown Victoria LX 4.6 V8 1993 Chevy Silverado 4.3 V6