My Le Sabre starts ok initially, but as I'm driving it just quits. No sputter, no warning. Have to pull over, put in Park and it starts again. Speed isnt a factor, it does it on side streets as well as the freeway. And it wont start in Neutral.
Engine stalls. on 1991 Buick LeSabre
I would look at the Crank Shaft Sensor. I used to work in a GM dealership during these years and this was a common problem. The fact that your car won't start in neutral is another issue, it is most likely a problem with your Neutral safety switch. Check for any Check Engine or Service Engine Soon codes, to see if there is a Crank Sensor code.
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replace fuel filter