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Will not stay started

Tiny
SHROPSTERS
  • MEMBER
  • 1998 PONTIAC GRAND PRIX
  • 3.8L
  • 6 CYL
  • 4WD
  • AUTOMATIC
  • 150,000 MILES
Error codes:
P1022 pedal sensor
P0301 cylinder 1 misfire
P1133 ho2s insufficient switching

Replaced pedal sensor
Installed plug in cylinder 1

What would be our next action? Car starts but immediately shuts off.

Thank you
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Saturday, November 21st, 2020 AT 3:30 PM

5 Replies

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 108,164 POSTS
Hi,

Have you checked to make sure fuel pressure is within spec? Is it possible for you to record what it is doing so I can hear it? Also, are you able to keep the engine running if you press the throttle?

If you haven't checked fuel pressure, here is a link that shows in general how it is done:

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

Let me know.

Joe
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Saturday, November 21st, 2020 AT 9:17 PM
Tiny
SHROPSTERS
  • MEMBER
  • 4 POSTS
We are going to see if we can borrow a kit from our AutoZone. I have attached a video of what it is doing. We won't be able to test the pressure after the initial pressure test because it does not stay started. Hoping just with gauging it we can find out what it is. Thank you for being the man for our auto repairs. It's just me and my daughter trying to fix her problem, oh and you. We'll take pics of the gauge and let you know.
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Sunday, November 22nd, 2020 AT 10:33 AM
Tiny
SHROPSTERS
  • MEMBER
  • 4 POSTS
Trying to send new video of the pressure gauge but site not letting me, I'll try again after this. We changed plugs and wires, checked fuses and relays, staying running a little longer, 10 seconds.
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Sunday, November 22nd, 2020 AT 11:23 AM
Tiny
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  • MEMBER
  • 4 POSTS
Still won't let me post another video, but the pressure starts at about half way on the gauge when just attaching to the system with the key turned on, then when she starts it, it goes up about 5 PSI and then pretty quickly goes down to zero. About 10 seconds is the longest it will run.
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Sunday, November 22nd, 2020 AT 11:29 AM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 108,164 POSTS
Is the fuel pressure dropping to 0? If that is happening right before the engine stalls, that's the problem.

Let me know.

Joe
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Sunday, November 22nd, 2020 AT 7:52 PM

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