Engine will not stay running?

1997 MERCURY SABLE
200,000 MILES • 3.0L • V6 • 2WD • AUTOMATIC
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BEARBELK70
  • MEMBER
  • 2 POSTS
The car starts and then immediately shuts off.
Aug 5, 2023 at 2:21 PM
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JACOBANDNICKOLAS
  • CERTIFIED EXPERT
  • 110,175 POSTS
Hi,

This could be the result of a few things. By chance, have you checked fuel pump pressure to see if it is weak? Also, do you notice that it stalls immediately when you release the key from the start position to the run position?

Fuel pressure is a common cause. Here is a link that explains in general how to check fuel pump pressure. You will need a fuel pressure gauge, but most parts stores will lend one to you.

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

I attached the manufacturer's fuel pressure specifications below.

Let me know. Also, let me know if the check engine light has been on and if the computer has been scanned for diagnostic codes.

Take care,

Joe

See pic below.
Aug 5, 2023 at 9:51 PM