J Jon B New member Nov 4, 2009 #1 have power what to do ? changed eng. in jeep 1997 new eng. 90,000 miles- tried senor from old eng. got same 1391 code don't think it jumped time runs too smooth.does computer have to find itself
have power what to do ? changed eng. in jeep 1997 new eng. 90,000 miles- tried senor from old eng. got same 1391 code don't think it jumped time runs too smooth.does computer have to find itself
