1991 pontic grand am
 driving along it just cuts out ,can run for
 10min to 20min nothing will happen run
 fine . just don’t no when it will cut out no
 check engine light.hooked up on machine
 everything  is fine kind of lost
                                   help
                               joe
What does it do when you try to start it after it cuts out?? Is there spark?? Is there fuel??
transman