 Air/Fuel Jumpy, 3sgte |
 Mar 22, 2008 - 3:27 PM
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Enthusiast  Joined Aug 19, '07 From Farmington, MI Currently Offline Reputation: 7 (100%)  |
Hi, I don't have a wideband but I was wondering when my car sits at idle when its warmed up, the air fuel(so it shows) jumps between lean and rich back in forth a a set speed? is my o2 bad, or is that normal, setup is a gen 2 jdm 3sgte with some bolt ons
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Replies
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Mar 22, 2008 - 5:15 PM
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 Enthusiast Joined Aug 31, '02 From Philadelphia, PA Currently Offline Reputation: 8 (100%) |
Its called "closed loop". The gauge will jump back and forth during idle and cruising because the o2 sensor is correctly adjusting the a/f ratio to stay stoich during those times.
-------------------- 15PSI - 30MPG - Megasquirt Tuned
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Mar 22, 2008 - 6:12 PM
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 Enthusiast Joined Aug 9, '06 From Ma Currently Offline Reputation: 1 (100%) |
Your exhaust tone changes as the A:F changes?
Like a surging back and forth? QUOTE(lagos @ Mar 22, 2008 - 5:15 PM) [snapback]656839[/snapback] the o2 sensor is correctly adjusting the a/f ratio to stay stoich during those times. The ECU adjusts the A:F ratio to feed the catalytic converter oxygen. --------------------  |
Posts in this topic
supra12big Air/Fuel Jumpy Mar 22, 2008 - 3:27 PM
presure2 QUOTE(supra12big @ Mar 22, 2008 - 4... Mar 22, 2008 - 3:53 PM supra12big k, butthe exhaust tone changes when it goes back a... Mar 22, 2008 - 5:02 PM
supra12big yeah i can heard the tone kinda when it changes ba... Mar 22, 2008 - 10:11 PM lagos sounds like your friend needs a new o2 sensor. Mar 23, 2008 - 1:19 AM
supra12big i noticed today, lets say i get back from driving ... Mar 23, 2008 - 8:23 AM |
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