W211 AMG Discuss the W211 AMG's such as the E55 and the E63

Strange whining sound even after car killed

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Old Feb 3, 2016 | 11:38 PM
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2005 E55 AMG
Strange whining sound even after car killed

New to mercedes, Just got a 2004 e55 - Last week, on a cold day I heard a crazy whining sound. It continued when I killed the car. Here is a video of the sound.

Shortly after, I have a check engine light.

What is this noise? Could the check engine be related?

Thanks for helping a new guy out.

https://www.dropbox.com/sc/nyspt93xy...swDAkYhRVIaWwa

https://www.dropbox.com/sc/9vmzh5y05...MtUbOh0y6afFaa
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Old Feb 3, 2016 | 11:45 PM
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E55
your secondary air pump relay stuck on and killed the pump. replace the relay, fuse, pump, and clear the fault codes.
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Old Feb 3, 2016 | 11:56 PM
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2005 E55 AMG
Originally Posted by Rocman8
your secondary air pump relay stuck on and killed the pump. replace the relay, fuse, pump, and clear the fault codes.
Wow, ok, so I just had the secondary pump replaced. Do you think the pump is likely out now? So replace again, along with relay and fuse?

Is it possible it was just the relay?
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Old Feb 3, 2016 | 11:59 PM
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yeah because everyone just replaces the pump when it dies and not the relay when in fact the relay is the real problem here because it sticks on and runs the pump constantly till it shorts the pump and pops the fuse.
try a fuse and relay and cross your fingers but im guessing its out again.
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Old Feb 4, 2016 | 08:06 PM
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04 e55
disable pump via star - not needed - save future headache
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Old Feb 4, 2016 | 08:08 PM
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Depends where you live if you need to pass smog
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Old Feb 4, 2016 | 08:21 PM
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2005 E55 AMG
Originally Posted by Rocman8
Depends where you live if you need to pass smog
Well, I am ordering a star kit anyway. And I had the CEL when i bought it, found a place that helped me to pass emissions, Im sure I could go there again. After pump was replaced CEL went off, after this issue, its on again.

I may just disable it. Is changing that pump fairly easy? If I get the car up on ramps Im guessing I could figure it out.

Thanks Guys!
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