Hello, i just bought a 1986 z28 305 carbureted
when i start in morn revs super high then stutters and dies after several starts it stays on but seems to idle high and rough, also the gas gauge moves when reving, like a mini tach also coolant temp gauge always reads low and the tach moves (bumps) with the turn signals

is this a common problem with camaros or a problem any of you dealt with or knows a fix before i go taking stuff apart???

Thanks, Vic