when cranking the engine all fuel stops?

1992 CHEVROLET S-10
100,000 MILES
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NUNYA56
  • MEMBER
  • 1 POST
replaced fuel relays and installed new fuel pump. with key on fuel pumps good, but when cranking motor all fuel stops.
Aug 21, 2024 at 4:04 AM
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JACOBANDNICKOLAS
  • Experienced Mechanic
  • 110,240 POSTS
Hi,

When you first turn the key to the on position, the pump should prime for a second or two then stop.

Fuel will not be sent again until the PCM recognizes ignition and the engine starts.

Let me know what is happening. Are you able to get it to run at all?

Let me know.

Joe
Aug 21, 2024 at 1:03 PM
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STRAILER
  • Experienced Mechanic
  • 55,233 POSTS
This can be caused by the ignition module failing, I would see if there is spark. This video can show you how:

https://youtu.be/baq_aEWNQ0Y?si=9Ig8obOtUB0A4R3d

Also, check all fuses to see if any are blown, here are the locations and how to change out the ignition module in the images below in case you need it.

https://www.2carpros.com/articles/how-to-check-a-car-fuse

Check out the images (below). Please let us know what happens.





Aug 21, 2024 at 1:05 PM
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