Did not start after replacing the crank sensor

1988 BUICK LESABRE
220,000 MILES • 3.8L • 6 CYL • 2WD • AUTOMATIC
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JOEL KING
  • MEMBER
  • 7 POSTS
It quit running one. Always ran great. Well, I did some research. crank sensor, changed that and it fired right up. It ran great for two days, then did the exact same thing. replaced crank sensor again with AC Delco, but this time it didn't start.
Apr 5, 2022 at 6:37 PM
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WENDY W
  • CERTIFIED EXPERT
  • 86 POSTS
Hello,

Have you been able to retrieve any trouble codes from the vehicle? Here's a guide that can help with that:

https://www.2carpros.com/articles/buick-cadillac-chevy-gmc-oldsmobile-pontiac-gm-1983-1995-obd1-code-definitions-and-retrieval-method

On this vehicle, the crankshaft sensor needs to be adjusted to maintain the proper air gap between the sensor and the interrupter ring. I've attached diagrams below to help with the process. You may also find this guide on replacing crankshaft sensors to be helpful:

https://www.2carpros.com/articles/crankshaft-angle-sensor-replacement

Please let us know if you've been able to retrieve any trouble codes or if there's any more help, we can provide.

Thanks, Wendy W.
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Apr 6, 2022 at 10:04 AM