Trance_LT4
Well-known member
My 96 LT4 heats up slowly , and will sometimes even maintain regular operating temp. between 195-215, but the second it gets to 225 it skyrockets up to 245-250 and completely fills the overflow tank to bubbling over. It does this whether I'm driving or if its started cold and allowed to idle in my driveway, makes no difference. Any ideas? I've replaced both the thermostat (180 deg) and the radiator cap (16 lbs) with no change in condition.