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Engine shuts off while driving

Tiny
LARRYHABERMAN22
  • MEMBER
  • 2000 BUICK LESABRE
  • 260,000 MILES
When driving it will run fine and then kind of start to sputter and shut off. It won't restart unless I wait half an hour or so. Then starts and runs fine again. It used to shut off when idling for 10 to 15 minutes also but I put a new MAF sensor in. So now it idles fine.
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Saturday, March 5th, 2022 AT 11:54 PM

7 Replies

Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
Good morning,

Does it run fine now with no issues?

If it does not, I would get a fuel pressure gauge and attach it to the engine and see if the pressure drops out. It could be a fuel pump. You can rent one at a parts store.

Ignition Switch "on", Fuel Pump Running 48-55 PSI.

https://www.2carpros.com/articles/engine-stalls

https://www.2carpros.com/articles/how-to-check-fuel-system-pressure-and-regulator

https://www.2carpros.com/articles/how-to-replace-an-electric-fuel-pump

Please let me know if you have any other questions.

Roy
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Sunday, March 6th, 2022 AT 4:59 AM
Tiny
LARRYHABERMAN22
  • MEMBER
  • 4 POSTS
I put a new fuel pump in about a year ago.
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Sunday, March 6th, 2022 AT 6:56 AM
Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
You still need to test it. It sounds like it is the issue.

Roy
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Sunday, March 6th, 2022 AT 10:58 AM
Tiny
LARRYHABERMAN22
  • MEMBER
  • 4 POSTS
Alright I will try that. Thank you
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Sunday, March 6th, 2022 AT 4:06 PM
Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
You are welcome.

Always glad to help.

Let us know if you have any other questions.

Roy
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Monday, March 7th, 2022 AT 1:43 AM
Tiny
LARRYHABERMAN22
  • MEMBER
  • 4 POSTS
Had the codes read and it said 02 sensor bank1 sensor2. Would that cause it to stall?
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Monday, March 14th, 2022 AT 3:25 PM
Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
No, not at all. The rear O2 does nothing but monitor the catalytic converter.

Roy
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Monday, March 14th, 2022 AT 5:23 PM

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