My temp gauge on my 93 Z28 has gone to the highest point and will not come down even when the car is cold. I don't think the car has overheated either. I unplugged the sensor from the water pump then plugged it back in and the gauge needle is still way to the right. Has this happened to anyone else? What do you suggest I do to fix it? Thank you for the responses.

 

thats just for the computer. you need to unplug the temp sending unit on the drivers side block. it;s a single wire I belive green wire. unplug that and see what happens

 

A guage or two in my 95 have messed up, I had to take it to the dealer to fix it.