Works if I park it in the sun here in sunny SoCal (by the Mex border=hot) in summer but not in winter. If I crank the heat on defrost (it's mounted on the dash) it works, if I crank the AC on def it quits. I already replaced the probe per Autometer tech supp against my better judgement, no change. The gauge acts like it's sticking usually around 600. If I romp it and it's kinda warm, sometimes it'll pin and stick for a while, then back to 6. Who's got ideas?
Thanks
Thanks