During his years as footballer he played as centre back, position which was well considered after being featured in 1988's America Ideal Team.
Despite his success, in 1989, Astengo was involved in Chile national team scandal at Maracanã, which alongside keeper Roberto Rojas and his coach Orlando Aravena received a five-year ban by the FIFA.
[2] He began his career with Colo-Colo lower divisions, later having a brief spell as first-team caretaker coach in 2008, replacing Claudio Borghi.
However, he left the Pedreros–based team and then had short periods at Unión San Felipe youth ranks in 2009,[3] and Deportes Temuco in 2013.
He has permanently worked as a football commentator for TV media such as Canal del Fútbol (CDF) and DirecTV Sports [es].