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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
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2004 5.3 l chev silverado many codes set
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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?
(This post was edited by tonygl on May 4, 2011, 7:53 AM)
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Hammer Time
Ultimate Carjunky
/ Moderator
May 4, 2011, 8:39 AM
Post #2 of 10
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Re: 2004 5.3 l chev silverado many codes set
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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. ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 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.
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tonygl
New User
May 4, 2011, 10:13 AM
Post #3 of 10
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Re: 2004 5.3 l chev silverado many codes set
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Thanks, I will look for leaks.
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tonygl
New User
May 5, 2011, 6:38 AM
Post #4 of 10
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Re: 2004 5.3 l chev silverado many codes set
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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?
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Hammer Time
Ultimate Carjunky
/ Moderator
May 5, 2011, 6:48 AM
Post #5 of 10
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Re: 2004 5.3 l chev silverado many codes set
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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.
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Tom Greenleaf
Ultimate Carjunky
/ Moderator
May 5, 2011, 12:29 PM
Post #6 of 10
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Re: 2004 5.3 l chev silverado many codes set
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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?)
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Double J
Veteran
/ Moderator
May 5, 2011, 8:29 PM
Post #7 of 10
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Re: 2004 5.3 l chev silverado many codes set
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Don McLean American Pie
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Tom Greenleaf
Ultimate Carjunky
/ Moderator
May 5, 2011, 9:23 PM
Post #8 of 10
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Re: 2004 5.3 l chev silverado many codes set
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Smart Azz but that's what we pay you for! Tom
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Double J
Veteran
/ Moderator
May 5, 2011, 10:54 PM
Post #9 of 10
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Re: 2004 5.3 l chev silverado many codes set
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Didn't mean to be a smart azz...saw your question mark after the name ,thats all.
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Tom Greenleaf
Ultimate Carjunky
/ Moderator
May 6, 2011, 3:38 AM
Post #10 of 10
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Re: 2004 5.3 l chev silverado many codes set
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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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