Loses power

1995 CHEVROLET 1500
220,000 MILES • 5.7L • V8 • 4WD • AUTOMATIC
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CROYBOY
  • MEMBER
  • 1 POST
When holding throttle at a constant speed the engine will lose power then return constantly.
Nov 29, 2019 at 10:12 AM
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AL514
  • ✓ASE Certified Mechanic
  • 5,587 POSTS
  • ASE Certified Mechanic
Hello, does the check engine light come on when the problem is present? A good start would be to see if fuel pressure is dropping off at higher RPM's. Here is a quick guide to understanding fuel pressure testing:
https://www.2carpros.com/articles/how-to-check-fuel-system-pressure-and-regulator
Nov 29, 2019 at 12:03 PM
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