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Engine starts will not rev and then shuts off

Tiny
DJAMESJSR37
  • MEMBER
  • 1994 CHEVROLET SILVERADO
  • 5.7L
  • V8
  • 4WD
  • 235,000 MILES
Ran code test codes 33 and 44 replaced MAP and oxygen sensor. Next code was 82 and 43, replaced replaced knock sensor and ignition. Control, ext. Coil fires full time with ignition on. So I take it's okay. I have replaced about all but pickup coil. Reinstalled old MAP and code 82 keeps coming up.
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Tuesday, August 27th, 2019 AT 11:34 AM

1 Reply

Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 48,363 POSTS
Hello,

Does it run better on starting fluid? it sounds like the fuel pump is going out. To be sure here is a guide to help us test the fuel pressure:

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

Please run down this guide and report back.

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Tuesday, September 8th, 2020 AT 12:11 PM

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