Hey everyone,

My secondary air injection pump happens to be none functional and needs to be change. The problem is that MB dealer quoted 1200$ for the piece only so I searched over ebay and found that I could send my disfunctional one so they can fix it. Now the problem is removing it. Is there any DIY on how to remove it. And when removing it will there be any problem for the car running without it ?? or it has te be on the car while the car running. I have a E350 2010.

Regards & thanks

wouldn't your warranty cover this issue?

Removing the unit will most likely trigger an emissions related code. This unit is generally used during cold start.

That is what I heard but can I drive the car without it while it is being repaired ?

yes you can, but cell will be "on" till you put the pump back.

Is it clogged or is the motor broken? Could also be a solenoid or relay. I'd make sure what the problem is before you pay to remove it, or remove it yourself and pay to have it fixed. How much is the ebay vendor charging by the way?

Well the tech who wasnt a mercedes tech but a good one told me that the air pump was done. Indeed every morning here (Canada, Quebec) it is cold and before I heard the pump start when the car started but now I here nothing at all. If it was the relay would it do the same as if the pump was blown also. As for the ebay vendor he is charging 110$ to fix to new with 1 year guarantee. Compared to 500-600$ new pump.

If he applied voltage to test it, that's a pretty conclusive test. If a relay or solenoid were bad, the saip would not turn on. If your SAIP is in fact bad because it is clogged up with liquid and debris, it would be a good idea to check out your car's equivalent of a combi valve. Not sure what it's called in Mercedes parlance.

Well i managed to buy one used for a cheap price and am planning to replace it this friday. I will let you know if it was the SAIP

michel,
any update on this. DIY will be good to have.