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While driving the car started losing power, bucking, turned it off and then it would not start

Tiny
LADEB520
  • MEMBER
  • 1998 BUICK CENTURY
  • 3.1L
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 130,000 MILES
My friend was driving down the road when his car was losing power and started bucking, he pulled over and shut the car off and it would not start again. Will turn over but won’t start. Replaced fuel pump, coil packs and plate but still won’t start. Where should I look next? I read maybe the crank sensor!
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Saturday, June 18th, 2022 AT 6:01 PM

1 Reply

Tiny
SQM
  • MECHANIC
  • 6,383 POSTS
Hello,

Is the check engine light illuminated?
If it is, then it will be a good idea to scan and retrieve the code(s), as it can help with the diagnostics.

https://www.2carpros.com/articles/checking-a-service-engine-soon-or-check-engine-light-on-or-flashing

One of the possibilities is having a faulty crankshaft position sensor. A failed crank sensor will allow the engine to crank over but not start.

Take a look at these helpful guides:

https://www.2carpros.com/articles/symptoms-of-a-bad-crankshaft-sensor

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

Let me know of any questions.
Thank you.
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Saturday, June 18th, 2022 AT 7:53 PM

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