I put it in Drive and get to around 10 MPH it starts acting like it's being robbed of air?

Tiny
HEYWARD11
  • MEMBER
  • 2002 CHEVROLET TAHOE
  • V8
  • 4WD
  • AUTOMATIC
  • 230,000 MILES
I replaced my mass air flow sensor when I hooked up the airflow sensor the idle changed and it started idling good soon as I put it in Drive and get to around 10 MPH it starts acting like it's being robbed of air.
Friday, September 9th, 2022 AT 4:11 PM

1 Reply

Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 47,512 POSTS
This happens when the fuel pump starts to go out, but to be sure we can do a fuel pump pressure test which you can rent a gauge from the auto parts store for cheap.

Here is a guide that will help and the fuel pump specs as well:

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

Measure with the Key On Engine Off with the fuel pump commanded On.

Vin (V,T,U)
Fuel Pressure (gasoline) .................... 55-62 psi

Vin (Z)
Fuel Pressure (ethanol) .................... 48-54 psi

Check out the images (below). Please let us know what you find. We are interested to see what it is.
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Saturday, September 10th, 2022 AT 11:28 AM

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