It was running fine then one day it just stalled on me after a good drive?

BETH ROGERS

MEMBER
2001 CHEVROLET TAHOE
5.3L
V8
4WD
AUTOMATIC
195,573 MILES

It was running fine then one day it just stalled on me after a good drive. I haven't gotten it running sense. No take that back it ran for maybe 20 minutes then lost power and stalled. Checked spark plugs and wires checked injectors and there is gas throughout system. But once it starts up it dies right away.

6 Replies

KEN L

MASTER CERTIFIED MECHANIC
47,648 POSTS

These trucks are famous for failing fuel pumps, but to be sure we can do a fuel pressure test. Here is a guide to help walk you through the steps and a video on how to change out the fuel pump in case you need it:

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

Key On Engine Off 55-62 PSI

You can rent a fuel pressure test kit from the auto parts store for cheap or free in most cases. Please check the video below to see how the change the pump out.

https://youtu.be/VuGxQgWDP-0

Another way to check to see if it is the pump is to see if the engine runs on starting fluid.

Please check out this guide as well:

https://www.2carpros.com/articles/car-not-running-advanced

Check out the images (below). Let us know what happens and please upload pictures or videos of the problem.

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Friday, March 10th, 2023 AT 10:40 AM

BETH ROGERS

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4 POSTS

Thank you for all the help so far. I'm in the process of checking out the crank potion sensor. So, my question is, what would the sensor read on a multimeter? It's a three wire one. Basically, need to know how to tell if the sensor is bad or to look elsewhere? Looking forward to hearing back from you.

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Monday, March 13th, 2023 AT 7:14 PM

MIKE H R

MECHANIC
3,094 POSTS

Old school of thought, will the car run with a touch of starting fluid? Has the fuel filter been changed in a while? With the ethanol in the gas now a days I have seen where the fuel filter screen that is on the fuel pump (in the fuel tank) get clogged and even though the fuel pump runs it will restrict the fuel getting to the engine.

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Tuesday, March 14th, 2023 AT 10:21 AM

BETH ROGERS

MEMBER
4 POSTS

Okay, so I've checked the mass air flow sensor and cleaned it, also the crank position sensor checked and cleaned. I am getting fuel pressure. But Tahoe still won't stay running for more than a m.

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Monday, March 20th, 2023 AT 10:20 AM

BETH ROGERS

MEMBER
4 POSTS

But Tahoe won't stay running for more than a minute. But I have been noticing that there is a lot of times the power to everything flickers. Especially if you mess with the wires that are attached or next to the brake pedal. No codes are coming up. I'm going to check all the relays today. It was making a weird noise after starting it up today when I pushed on the brake it would stop. But I'll let you know more soon.