E-Class (W212) 2010 - 2016: E 350, E 550

How long the O2 sensor runs in open loop when cold?

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Old 10-30-2020, 01:10 AM
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00ML 320, 11 E350, 12 ML350
How long the O2 sensor runs in open loop when cold?

Anyone know how long the 2011 3.5 V6 runs in open loop when started.

My can runs rough when started and driven at first. Runs perfict when warm.

No check engine light. Spark plugs were perfict with new now.

Help!

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