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Q: Check Engine light goes on after about 10 min on 1992 Chevrolet S10

Rookie cbe0621eac06868b3efe0d8d1d3611e23c60d3114864ea2ec19a68cfbd3eebab
Ceheck Engine light goes on after engine warms up...runs rough and idles up and down. 140,000 miles
(1) Answer
A proper diagnostic test will be necessary to find out what has failed and provide a course of repair. Too many items of possible concern to imagine.