I'm kind of at my wits end with my temperature gauge. I just got a 1997 Mustang with the 3.8 V6 and have got a new ECT sensor and temperature switch. I just replaced the thermostat too. The temperature guage still doesn't move what's so ever. It might move a slight bit but goes right back down. Pretty much it don't work. Now I am just wondering if its something in the guage or the wire... idk I just need some ideas guys. It doesn't seem to overheat, I just don't know why it isn't working. I'm confused on the ECT and temperature switch too. As far as I know, if you stand in front of the car, the ECT looks solid grey and sits up straight, I'm assuming the temp switch is to the right of it and sits at an angle... correct? The temp switch was brown and ECT was grey, just give me input.