1993 oldsmobile cutlass supreme running problem
Ok here it goes 3.1 motor multiport ran fine up until 3 months ago idles fine cold or
warm engine I drive for a while then car jerks u back and forth tach bounces all
over the place then eventually motor shuts off .Some of thi.gs I did on this motor
new vacum lines all new sensors new injectors icm tested good changed ecm
changed coils only thing I did not change was the pigtail going to crank sensorAlso
this sounds funny but when u put in reverse it goes then motor shuts off