Engine has no power and it stalls out?

Tiny
ELISA DARLENE WESSINGER
  • MEMBER
  • 1994 CHEVROLET 1500
  • 5.7L
  • V8
  • 4WD
  • 99,999 MILES
Put a new fuel pump on and change the fuel pump relay. When you increase engine speed it stalls out. What could it be anybody know?
Tuesday, August 23rd, 2022 AT 12:11 AM

1 Reply

Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 48,363 POSTS
When you changed the fuel pump out did you use an AC Delco unit? If not let's check the fuel pressure because it sounds like the fuel pressure is low or you have a clogged exhaust system. These guides should help us figure out what's going on:

https://www.2carpros.com/articles/engine-has-low-power-output

and

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

and

https://www.2carpros.com/articles/how-to-test-a-catalytic-converter

Please run down these guides and report back.

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Tuesday, August 23rd, 2022 AT 10:43 AM

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