Starts fine then dies

[a_estep23]

Newbie here. I have a 2000 silverado that starts right up, runs for a few minutes, then dies. It will start right back up most of the time, then a couple minutes later it died again. When it is running, it idles fine.. I've cleaned throttle body and MAF with no luck.. fuel filter, or pump? Help..

 

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[a_estep23]

8 cylinder 5.3 I believe. ..189,000 miles extended ca .

 

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[dbcooper748]

Any check engine lights?

[a_estep23]

No codes at all...

 

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[dbcooper748]

Does it just cut off completely or does it idle down or shutter when it dies?

[a_estep23]

It shutters. If I give it gas, it sputters, and almost feels like it's sucking air..

 

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[a_estep23]

But haven't found any vacuum leaks, and idles so good the few minutes it runs, I can't figure it out..

 

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[dbcooper748]

Hmmm, well difficult to say via interwebs. I used to have an old s10 that did similar but it would throw a check engine light, which i later decoded to be a faulty O2 sensor that was causing the truck to run rich... Do u smell any gas?

[a_estep23]

I haven't noticed a gas smell. I was thinking possibly 0 2 sensor, but since there were no codes, I didn't want to keep throwing money in it on guesses. Lol.

 

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[dbcooper748]

I haven't noticed a gas smell. I was thinking possibly 0 2 sensor, but since there were no codes, I didn't want to keep throwing money in it on guesses. Lol.

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I completely understand. If it is something that happens every time, and you can reproduce it in front of a tech, You might just have to bite the bullet and take her in to a service center. I wish i was close by to help u in person.

[a_estep23]

Thanks for the help. Fortunately, it is a hauler/work truck and not my daily driver. . I do need to catch up on firewood though, so I may be biting the bullet lol.

 

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[dbcooper748]

Maybe u will get lucky and it will be something simple

[dbcooper748]

Also, it could be as simple as bad gas... i would try a bottle of seafoam just as a cheap solution. My wifes acura tl had a similar issue (although i know acura and chevy are 2 entirely differnt animals) and a bottle of seafoam cured it. Just a thought

[a_estep23]

I'll do that tomorrow. Thanks for the idea..

 

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[dbcooper748]

I was reading on another forum that some people have had electrical issues on these trucks. Some cured it by cleaning chassis grounds, while others had ignition switches replaced, and also some said that after inspecting the fuse box, the found signs of melting on the plastic housing. Just throwing darts here, but again, its hard to know definitively without getting my hands on the truck. There are also some scanner tools available that can give real time data while truck is running, but again, thats something a reputable shop would have at their disposal