What happens is the gauges will read properly for the first 5 mintues, while the engine heats up. After that, the needle shoots past the H and stays there until I turn off the car and the engine is cool. Now the problem has come to bite me back in the arse because my engine has overheated on me three time this month (another problem that's already being fixed), and I could have shut-off my car before I saw the smoke billow out from under my hood. Needless to say, I want to get my gauges working properly. If all else fails, I'll buy a whole cluster.
Besides replacing the thermostat and sensor, I'm also troubleshooting the cluster and gauge with a multimeter, to make sure all the proper connections are being made. Everything is making contact, except for the diode. The gauge has one resistor and one diode.
So when I test the diode, nothing passes through. Is current SUPPOSED TO pass through the diode? Could this be my problem? And if it is, does anyone know amp and voltage of the diode???
