Hi Guys,

I just replaced my pump about 4 months ago because the old one stopped working and was also wet inside which is prob what killed it. Now this one has gone bad, it was a used part but it was working fine and then got noisy for a few days before it died. This issue of it getting wet seems to be common as stated in the thread below. Got CEL P0400 and 0411. I believe the 0400 code is from a clogged EGR tube which I heard is a PIA to clean!

http://www.benzworld.org/forums/w202...-air-pump.html

Anyone experience this issue? Thx!!

1995 C-Class