Originally Posted by Mike Leary
My gauge is out, also. Can you ohm it at the gauge with the wires connected or should the wires be pulled from the gauge?
Mike I think you need to disconnect the wires to check the sensor/thermocouple. Many units have a connection near the thermocouple at the manifold. I would pull the thermocouple and hold it in a burner on the stove with an ohmmeter connected. You can go to the Isspro site and lots of info and pictures. I have also bought stuff directly from them, good people to work with.
I don't know about your EGT but mine has a BAE label, the outfit the supplied the turbo. It's probably somebody else's meter but I have no idea who made it.
I think the Isspro EGT's are powered by the thermocouple but I had a Steward Warner EGT some time ago that had to have 12V
connected in order to operate.
Like Gary above I would check all the connections first.
Good luck, Dan