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2004 5.3 l chev silverado many codes set


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tonygl
New User

May 4, 2011, 7:44 AM

Post #1 of 10 (3556 views)
2004 5.3 l chev silverado many codes set Sign In

p0300,p0151,p0174,p1153 Rough idle, bad gas mileage, hesitation on first acceleration. Changed plugs and air filter, cleaned MAF sensor. This did not work, so I disconnected the O2 sensor b2 sensor 1. Now it runs fine, could this mean the sensor is bad or the catalytic converter or something else? Should I change O2 sensor then go from there?Crazy


(This post was edited by tonygl on May 4, 2011, 7:53 AM)


Hammer Time
Ultimate Carjunky / Moderator
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May 4, 2011, 8:39 AM

Post #2 of 10 (3540 views)
Re: 2004 5.3 l chev silverado many codes set Sign In

Most of those codes are pointing to a lean condition on the passenger side. It could be a bad sensor but it's more likely that it is really running lean on that side. Check it real good for any vacuum leaks.



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We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.



tonygl
New User

May 4, 2011, 10:13 AM

Post #3 of 10 (3528 views)
Re: 2004 5.3 l chev silverado many codes set Sign In

Thanks, I will look for leaks.


tonygl
New User

May 5, 2011, 6:38 AM

Post #4 of 10 (3508 views)
Re: 2004 5.3 l chev silverado many codes set Sign In

Checked for leaks in the vacuum system, and no visible signs. The fact I disconnected the O2 and it ran fine, would that not indicate an O2 is bad?


Hammer Time
Ultimate Carjunky / Moderator
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May 5, 2011, 6:48 AM

Post #5 of 10 (3505 views)
Re: 2004 5.3 l chev silverado many codes set Sign In

Air leaks are not something that is visible. It has to be smoke tested or artificially enriched.



~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.



Tom Greenleaf
Ultimate Carjunky / Moderator
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May 5, 2011, 12:29 PM

Post #6 of 10 (3496 views)
Re: 2004 5.3 l chev silverado many codes set Sign In

Tony: I've had some luck using carb cleaner at suspect leak areas and if idle (do at idle) changes there's something wrong there. OE gaskets stink IMO. Not like the old days. If you try that - cooler engine helps and don't point at hot items,

T

PS: Newest car 1989 - the day/year the music died! (Don McKinley?)




Double J
Veteran / Moderator
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May 5, 2011, 8:29 PM

Post #7 of 10 (3484 views)
Re: 2004 5.3 l chev silverado many codes set Sign In

Don McLean

American Pie


Tom Greenleaf
Ultimate Carjunky / Moderator
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May 5, 2011, 9:23 PM

Post #8 of 10 (3479 views)
Re: 2004 5.3 l chev silverado many codes set Sign In

Smart Azz but that's what we pay you for!


Tom



Double J
Veteran / Moderator
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May 5, 2011, 10:54 PM

Post #9 of 10 (3475 views)
Re: 2004 5.3 l chev silverado many codes set Sign In

Didn't mean to be a smart azz...saw your question mark after the name ,thats all.


Tom Greenleaf
Ultimate Carjunky / Moderator
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May 6, 2011, 3:38 AM

Post #10 of 10 (3472 views)
Re: 2004 5.3 l chev silverado many codes set Sign In

Memory is actually pretty good now and then if that makes sense? Thank you FIVE star moderator here and that's what you get paid for as said- now laugh!

Tommy







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