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david craig
david craig, Auto Mechanic
Category: Chevy
Satisfied Customers: 925
Experience:  owner/mechanic at 3D Automotive
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2004 chevy silverado 5.3 trouble starting and if started

Customer Question

2004 chevy silverado 5.3 trouble starting and if started will stall out after a few minutes. Have fuel pressure and have tried 2 different ecm's with the same results.
Submitted: 5 months ago.
Category: Chevy
Expert:  david craig replied 5 months ago.

Hi Im dave, sorry you are having issues. first, what is the fuel pressure running? and after shutting it off? it should hold

Customer: replied 5 months ago.
around 52-55 psi and will hold for awhile after shutting off
Expert:  david craig replied 5 months ago.

about how long before it drops?

Customer: replied 5 months ago.
Don't have an exact time but it happens slowly over time. Doesn't fall off after the pump is shut off.
Customer: replied 5 months ago.
Is there anything that would cause the fuel injectors to shut off.
Expert:  david craig replied 5 months ago.

the ecm missing a ground. but not likely. do you have a noid light?

Customer: replied 5 months ago.
Expert:  david craig replied 5 months ago.

hook it up to each injector to make sure each are getting command to fire

Expert:  david craig replied 4 months ago.

do you still need assistance?

Expert:  david craig replied 4 months ago.

please leave a rating at least

Customer: replied 4 months ago.
Sorry I have been out of town, I Wil try the injectors this weekend and let you know. Thanks
Expert:  david craig replied 4 months ago.

ok. sounds good

Customer: replied 4 months ago.
Update on the issue.Pulled on the ground some to the one that runs under the engine and the truck started up. It will run ok if i give it gas and will some times stall out at idle, but will start back up. I ran the truck up and down my street and the truck would sometimes stall out either coming to a quick stop or turning quickly.
Expert:  david craig replied 4 months ago.

check the fpr vac hose. pull it off with the truck running and make sure theres no gas present

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