HEAT GUAGE PROBLEMS

[hectic]

recently picked up a clean 93 citi auto golf car goes well but heat guage shitting around ,works when it feels ."1" changed thermo valve,flushed system new coolant.".2" checked fuse no.12 working."3"checked red /yellwow wire,even when ignition on touched cord on body never moved...i give it starting to make my heat guage go up works when it likes

[OettingerTDi]

I had the same issue with my 97 Citi.

Nothing worked, even changed the sender unit, but still it worked sporadically. It was better when it was warm outside or if the car was standing in the sun, sometimes reading normal, but most of the time only half of what it was supposed to or not even lifting the needle from the far left.

Eventually found an old cluster, removed the old heat guage and fitted the "new" guage into the cluster. It's back to normal, working as it should. I have been told that once the heat gauge doesn't work anymore, it cannot be repaired.