The temp guage in my Jeep has never worked. I know...why didn't i fix this five years ago. I did change the sending unit in the manifold, didn't help. Does anyone know if that is the correct sender to change or is it the other one, which I haven't located yet. I just replaced the water pump, thermostat,and hoses and would like to fix the guage now so I don't toast anything. It could be a wire, a ground, bad connection, bad guage cluster. I was looking for an easy solution if any. Maybe someone has had the same problem. Any thoughts?