Please make sure you've got oil in the motor.....................:biglaugh:
I know you do, but stranger things have happened. Was it working fine before you blew your hg? You may want to pick up an aftermarket op gauge and try it out. Hope someone comes on here and has an answer for you. I would have thought it was the sending unit as well. Have you checked the connection to the back of your gauge to make sure it is good? Good luck.