2008 Mercedes C230 cold start noise
2008 Mercedes C230 cold start noise
MBWorld Fanatic!
Joined: Nov 2015
Posts: 1,282
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2013 C250 Sport
Sounds like worn bearings on something like a pulley, alternator, etc. But it's odd it only does it cold. I've been getting driven nuts by a whine in my car that the dealers can't seem to fix.
Mercedes seems to have big issues with anything attaching to a belt or chain across all their models.
Mercedes seems to have big issues with anything attaching to a belt or chain across all their models.
Super Member
Joined: Apr 2008
Posts: 765
Likes: 171
From: Walnut Creek, CA
325Ci, 325Cic, C300
Super Member
Joined: Oct 2014
Posts: 701
Likes: 103
From: Ontario, Canada
2009 C63 AMG, 2010 C250 4Matic Sport
Secondary air injection pump is malfunctioning, probably a bearing inside of it. It'll need replacing soon and you'll likely get a check engine light soon if/when it completely fails
The one I linked is the aftermarket bosch unit, which is identical as far as I can tell.. The OE one is here on ECS
The one I linked is the aftermarket bosch unit, which is identical as far as I can tell.. The OE one is here on ECS
Junior Member
Joined: Apr 2008
Posts: 20
Likes: 0
From: Richmond, British Columbia, Canada
2008 C300 4MATIC Obsidian Black
Thanks for posting..
To Cvx5832 - i am having the same problem too. It started about 2 months ago. Went to Indy shop and confirmed the secondary air injection pump is the problem.He said to just wait till the Check engine light comes on as it is very expensive to replace. He quoted $1500 Canadian.
TO Funkwagen - Thanks for the link on the aftermarket bosch unit. Would you know if this fits a 2008 c300 4matic? I can see its on sale for $169 US that's 78% off MSRP?
and lastly can this be a DIY project? Thanks to everyone
To Cvx5832 - i am having the same problem too. It started about 2 months ago. Went to Indy shop and confirmed the secondary air injection pump is the problem.He said to just wait till the Check engine light comes on as it is very expensive to replace. He quoted $1500 Canadian.
TO Funkwagen - Thanks for the link on the aftermarket bosch unit. Would you know if this fits a 2008 c300 4matic? I can see its on sale for $169 US that's 78% off MSRP?
and lastly can this be a DIY project? Thanks to everyone
Super Member
Joined: Apr 2008
Posts: 765
Likes: 171
From: Walnut Creek, CA
325Ci, 325Cic, C300
Thanks for posting..
To Cvx5832 - i am having the same problem too. It started about 2 months ago. Went to Indy shop and confirmed the secondary air injection pump is the problem.He said to just wait till the Check engine light comes on as it is very expensive to replace. He quoted $1500 Canadian.
TO Funkwagen - Thanks for the link on the aftermarket bosch unit. Would you know if this fits a 2008 c300 4matic? I can see its on sale for $169 US that's 78% off MSRP?
and lastly can this be a DIY project? Thanks to everyone
To Cvx5832 - i am having the same problem too. It started about 2 months ago. Went to Indy shop and confirmed the secondary air injection pump is the problem.He said to just wait till the Check engine light comes on as it is very expensive to replace. He quoted $1500 Canadian.
TO Funkwagen - Thanks for the link on the aftermarket bosch unit. Would you know if this fits a 2008 c300 4matic? I can see its on sale for $169 US that's 78% off MSRP?
and lastly can this be a DIY project? Thanks to everyone
Send or post your VIN. I'll look up the specific part on EPC.
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Super Member
Joined: Apr 2008
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From: Walnut Creek, CA
325Ci, 325Cic, C300
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Thread Starter
Newbie
Joined: May 2016
Posts: 7
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Mercedes C230 2008
Thank you all for your help
I will validate if the sound comes from this piece.
Do you think I can change the pump by myself? I have a very limited knowledge of car mechanic...
Thanks again
I will validate if the sound comes from this piece.
Do you think I can change the pump by myself? I have a very limited knowledge of car mechanic...
Thanks again
Super Member
Joined: Apr 2008
Posts: 765
Likes: 171
From: Walnut Creek, CA
325Ci, 325Cic, C300
Thread Starter
Newbie
Joined: May 2016
Posts: 7
Likes: 0
Mercedes C230 2008
My stepfather has changed my Secondary Air Injection Pump this morning. My car is working fine so far... I'm pretty sure you have identified correctly the problem :-)
I have a check engine light for a while (code P0128). Do you think it was related to my old Air Injection Pump? Do I need to reset the system? If yes, how???
Thanks again for your help
I have a check engine light for a while (code P0128). Do you think it was related to my old Air Injection Pump? Do I need to reset the system? If yes, how???
Thanks again for your help
Super Member
Joined: Apr 2008
Posts: 765
Likes: 171
From: Walnut Creek, CA
325Ci, 325Cic, C300
My stepfather has changed my Secondary Air Injection Pump this morning. My car is working fine so far... I'm pretty sure you have identified correctly the problem :-)
I have a check engine light for a while (code P0128). Do you think it was related to my old Air Injection Pump? Do I need to reset the system? If yes, how???
Thanks again for your help
I have a check engine light for a while (code P0128). Do you think it was related to my old Air Injection Pump? Do I need to reset the system? If yes, how???
Thanks again for your help
Don't ignore it if you have the means. They often get stuck open, but sometimes they get stuck closed. Then what would have been an inexpensive fix becomes a nightmare.
