Interesting. My gauge has been in place for about 4 years with no issues until recently. Wonder if it is a sender fault vs. gauge? Further investigation required and perhaps a call out to Auber.Mine does that too, especially when I hit a bump in the road. I’ve triple and quadruple checked my connections, pretty sure it is an internal fault. Interestingly, mine is a double gauge and only the channel I have hooked up to the coolant temp is faulty, the EGT channel works just fine.