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07-30-2015, 08:59 PM
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#1 |
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VIP Member
Join Date: Dec 2007
Location: Woodlawn IL
Posts: 1,092
Likes: 162
Liked 216 Times in 77 Posts
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Re: A/F Ratio
How far down the primary should the 02 sensor be? If I were to try and put some in.
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07-31-2015, 09:06 AM
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#2 | |
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Member
Join Date: Dec 2009
Location: Hainesport, NJ
Posts: 123
Likes: 0
Liked 15 Times in 2 Posts
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Re: A/F Ratio
Quote:
 Greg Kelley - 609-265-2110 |
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07-31-2015, 11:44 AM
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#3 |
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Junior Member
Join Date: Mar 2013
Posts: 80
Likes: 12
Liked 27 Times in 6 Posts
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Re: A/F Ratio
No matter where you have the sensor mounted, the two step is skewing your readings. Misfires are always read as lean on the O2 sensor. I dont know exctly why but they do. What has helped me the most is looking at what the A/F ratio does immediately after you let go of the button. If it dives really rich, that tells you it was rich when it was on the 2 step. If it stays lean after you let go of the button, it was lean on the 2 step.
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07-31-2015, 01:51 PM
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#4 |
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Veteran Member
Join Date: Mar 2005
Location: Sand Springs, OK
Posts: 8,132
Likes: 896
Liked 390 Times in 170 Posts
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Re: A/F Ratio
A misfire in a street car does the same thing, often skews the fuel trims until fixed.
Reason is oxygen out the exhaust ports when misfiring. The wide band only knows oxygen content, and converts the oxygen level to air/fuel ratio. High oxygen = lean, to the wideband.
__________________
Ed Wright 4156 SS/JA |
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