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Q:

why does my car lose power mph cant go over 40 on 2003 Nissan Altima

Rookie cbe0621eac06868b3efe0d8d1d3611e23c60d3114864ea2ec19a68cfbd3eebab
does not have any power going up hill worse
(1) Answer
maybe your transmission is slipping? or timing is off? or an exhaust restriction?