Temperature gauge issue

[Mastaters]

Howdy all.
the other day I noticed that the temp gauge on my 86 was pegged to the right. It was working fine a day before. I checked the sending unit and noticed that the wire had made a small contact with the exhaust manifold and shorted. So, problem solved right? Nope, its still pegged with no other obvious sign of contact any where. So my question, do I have a hidden short or bad gauge now? Thanks in advance

( and yes I know I can pull the cluster and do a continuity check but if its a chance of another short under the hood, I'd rather avoid pulling the cluster atm)

[bd]

The simple solution, if there is one, is a grounded signal wire anywhere between the gauge and the temp sensor, or a faulty sensor.  Additionally, verify your I/P grounds.  If necessary, you can use "Functional Tests of Factory GM Electric Gauges" and the 1986 Wiring Manual to help you get your arms around a more in-depth diagnosis.