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1991 300E
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12 Posts
Discussion Starter #1
I have a 1991 W124 M103.

The issue: 11 flashes, which I've translated to "air injection system".

I've changed the O2 sensor and had recently replaced the smog pump, so feel those can be eliminated as possibilities.

My next test will be the EGR tube, any other ideas what to look at? or for?
 

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2013 E350 sedan, 2013 E350 cab, 1993 400E sold,1999 ML320
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2,436 Posts
Did you clear the code after and go through some computer "cycles", how about readjusting duty cycle? if not do a search on how to.
 
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