Running Lean
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Junior Member
Joined: Mar 2006
Posts: 1
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From: Austin,Tx
Running Lean
This has come up before, but I have pulled a code that is telling me "system running lean".
From reading similar threads I might be thinking it has something to do with the EGR valve, but im not familiar with it. How do I resolve this?
Also, could someone tell me about the most common reasons this will trip a code, and how do I reset the codes to see if it does it again?
Thanks, Joe.
From reading similar threads I might be thinking it has something to do with the EGR valve, but im not familiar with it. How do I resolve this?
Also, could someone tell me about the most common reasons this will trip a code, and how do I reset the codes to see if it does it again?
Thanks, Joe.
Senior Member
Joined: Nov 2004
Posts: 526
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From: minnesota
search the posts by looking for throttle body cleaning or tb cleaning. there are very good step by step ones on here. also might what to check on o2s depending on how many miles u got. i replaced mine at 70k
Senior Member
Joined: Oct 2002
Posts: 7,295
Likes: 125
From: St. Louis (Out in the woods)
Originally Posted by racerf150man
search the posts by looking for throttle body cleaning or tb cleaning. there are very good step by step ones on here. also might what to check on o2s depending on how many miles u got. i replaced mine at 70k
SEACH for "LEAN" or "PCV elbow" or "P0171 P0174" instead.
Steve
Technical Article Contributor
Joined: Oct 2003
Posts: 1,490
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From: Topeka Kansas
Originally Posted by Jesparza
This has come up before, but I have pulled a code that is telling me "system running lean".
From reading similar threads I might be thinking it has something to do with the EGR valve, but im not familiar with it. How do I resolve this?
Also, could someone tell me about the most common reasons this will trip a code, and how do I reset the codes to see if it does it again?
Thanks, Joe.
From reading similar threads I might be thinking it has something to do with the EGR valve, but im not familiar with it. How do I resolve this?
Also, could someone tell me about the most common reasons this will trip a code, and how do I reset the codes to see if it does it again?
Thanks, Joe.
Just what ProjectSHO89 said. You will find some possible causes for the P0171/P0174 code here. It also helps if you post the "Actual" code that you are getting as to leave no doubt to what "system running lean" means.
http://www.v8sho.com/SHO/TSB0197HO2SServiceTips.htm