the unit is about 13 yrs old,,, and yes, I did put some stuff in it that wasn't precooled. also the temps outside and IN the camper were hot hot hot. Ive heard that makes a difference too. Will keep trying. ALso,, im in contact w/ the dealer we purchased this unit (its a 1995 Born Free) but the fridge was replaced w/ a top freezer in 2000. I just thought these were a good fridge and they lasted a long time. It was perfect looking on the inside and well taken care of by previous owners,, who bought it new.