Who's the best ls 5.3 guy around?

417chevy · Sep 2, 2015

Re: Who's the best ls 5.3 guy around?

Check your mass air flow make sure it's not broke and do you have good fuel pressure when it idles down really low have you cleaned the throttle body

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sexxy · Sep 2, 2015

My wife's 02 drops down to 3-400 sometimes. It does not do it all the time and runs fine otherwise, so I have not messed with. It you find out the issue I wouldnt mind knowing.

poolman · Sep 2, 2015

Re: Who's the best ls 5.3 guy around?

417chevy said:
Check your mass air flow make sure it's not broke and do you have good fuel pressure when it idles down really low have you cleaned the throttle body

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Yes sir, both

redneckengineered · Sep 2, 2015

Re: Who's the best ls 5.3 guy around?

poolman said:
Yes sir, both

Injectors

poolman · Sep 2, 2015

Re: Who's the best ls 5.3 guy around?

redneckengineered said:
Injectors

Haven't checked the injectors. But none of the dealerships said anything about that, I have to assume they checked them, maybe not

redneckengineered · Sep 2, 2015

I'm just saying, they may need a good cleaning. I highly doubt any of the shops have done that.

Read this thread. Sounds similar to your problem. Solution is on page 3 with a picture. Cleaned the injectors and a bunch of crud came out.
http://www.hardlinecrawlers.com/forums/index.php?topic=42069.50