Secondary air Injection
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2000 ML55 sold? 2013 ML500,? 2017 C43 AMG,1929 Victory 6 roadster, 1927 Dodge 4 sedan, 1929 Dodge
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This is where it is but why do you need to replace it. Top front of engine.
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Yeah, I had some codes relating to secondary air injection. Turns out some ports were completely clogged. I ended up clearing them with a screwdriver, no codes!
IIRC, the pump only runs for 6 minutes when the car starts, meaning its unlikely to fail, because it doesnt run much.
IIRC, the pump only runs for 6 minutes when the car starts, meaning its unlikely to fail, because it doesnt run much.
2000 ML55 sold? 2013 ML500,? 2017 C43 AMG,1929 Victory 6 roadster, 1927 Dodge 4 sedan, 1929 Dodge
Joined
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6,349 Posts
You might need to put a bit more time into cleaning them than just a screwdriver. It seems a long run time 6 minutes but I could be wrong. Mine runs for about a 45 sec to a minute. Might have a lot to do with ambient temp with the run time.
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Absolutely correct. If everything is working properly, 45 secs. is the maximum run time.
I believe that air pump also cycles while idling at stop light as well.
Correct me if I'm wrong.
The one I bought from EBay for $200 didn't work, ended up buying a genuine MB(Bosch) air pump for $425. No more P0410 code, passed smog, yeah!
Correct me if I'm wrong.
The one I bought from EBay for $200 didn't work, ended up buying a genuine MB(Bosch) air pump for $425. No more P0410 code, passed smog, yeah!
Yes under two conditions. If you started driving before the initial test was completed and the other is it will conduct a systems check whenever it so desires.
Thanks for the clarification, 43!
Would you have part number for temp & clock light bulbs on instrument panel? :thumbsup:
Great, thanks!
You only need to unscrew 1 bolt to remove the air pump, but be very careful not to touch vacuum hoses behind air pump. Look what happened to my 99 ML320. These vacuum hoses are so brittle, better not touch any, unless you know EXACTLY what you're doing.
http://www.benzworld.org/forums/w163-m-class/2288073-what-part-please-help-id.html
This is the photo with Air Pump removed.
i had continuous problems with throwing secondary air injection error codes, I ended up removing the two valves on either head and cleaning out the passageway with brake cleaner, penetrating oil, and manifold cleaner; then blowing them out with an air compressor. I had it throw a code a couple hundred miles ago, which I cleared, and may need to redo the procedure. The actual correct fix calls for removing the heads and hot tanking them, I will stick to my solvents. :devil
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