Could actually be a problem so I wont comment on that. I had a bouncing temp gauge when I bought my Z it was fine, had it checked. I got some electrical cleaner, unplugged the temp guage, cleaned it with the cleaner and a toothbrush. Let it sit 15 minutes. Fired her back up and I havent had an issue since (2 months and counting).
-91 NA 2+0 -5% Limo tint all the way around -JDM Smoked Taillights