All the wires are still in place. The thermostat is in fine working order, too. It could not be the temperature gauge, you just installed a new one. But it could be your temperature sending unit has gone out. Or maybe, you have added a few horsepower to your high performance engine is it runs at a higher temperature now. If that is the case, you still need a new temperature sending unit. There is an Autometer Temperature Sender that is perfect for your engine. With a high performance engine you always want to be sure that the water temperature is in the proper range if you want to get the most power out of your engine. Our temperature sending units are designed for all types of driving and all types of engines. Our electronic Autometer Temperature Senders accurately send a reading to your temperature gauge. We have temperature sending units designed to send readings from 60 degrees Fahrenheit to 240, 280, 300, 340 and 380 degrees. When the time comes to replace your temperature sending unit or if you need to install a new one to handle your engine, do what professionals have been doing for years, install an Autometer Temperature Sender. Gearheads always want terrific sales support when considering good quality parts for their car or truck. Because you deserve that, we established a round-the-clock sales assistance call bureau to help you with your queries. To sweeten the deal, your parts come with FREE shipping for every order greater than $50. If you can find a better price, let us know - we will meet or beat any price advertised elsewhere.