Hesitation when attempting to accelerate

2001 CHEVROLET SUBURBAN
321,000 MILES • 5.3L • V8 • 4WD • AUTOMATIC
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MSNETTE03
  • MEMBER
  • 1 POST
When I start to drive and it's time to pick up speed, It starts to hesitate when I try to force it. It will not go pass 30 mph. It's scary at times.
Jun 27, 2020 at 6:45 PM
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DANNY L
  • ✓Experienced Mechanic
  • 5,648 POSTS
Hello, I'm Danny.

It sounds like you might have a weak or failing fuel pump and is not providing adequate pressure.First thing I suggest you do is test the fuel pressure.If you don't have access to a fuel pressure tester most auto parts stores have a tool loaner program and can rent you one.Here is a tutorial showing what is involved:


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

After performing this test get back to us with the results. I've attached a picture below of the fuel pressure specifications for your vehicle.Hope this helps and thanks for using 2CarPros.

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Jun 27, 2020 at 8:29 PM
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