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1999 ML320
2,800 Posts
Discussion Starter #1 (Edited)
Is the post i.e second o2 sensor the same as the pre o2 sensor even though it has a different part number?. Mine is reading around 0.070- 0.100mv and not doing much else, its not switching like the other side. LTFT is around - 3.5% on that side. Other side is 0.0%.
I have not long ago deleted second cat on that side which i know may cause a slight inbalance. Think the plugged cat may have killed it.
The reason i ask is i have a spare front sensor.
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