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E60 (2004 - 2010)
BMW 5-Series (E60 chassis) was first seen in the Unites States in the fall of 2003 with a 2004 Model Year designation. The E60 is now available as a 528i, 528xi, 535i, 535xi, 550i and a 535xi sports wagon! -- View the E60 Wiki

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  #1  
Old 02-14-2013, 10:49 PM
Deniskin Deniskin is offline
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Location: Chicago
 
Join Date: Feb 2013
Posts: 2
Mein Auto: BMW 545i
Angry Secondary Air Intake Carbon Build-Up Clean-up

HI, BMW 545i, 2005 with 115 k - secondary air intake system codes (P0491, P0492) - air passages have carbon build-up, both banks. Recently started to get codes (P2187 and P2189) - system too lean at idle speed, both banks, engine would die at stop signs or red lights. Dealership wants $6ooo (to remove engine heads and clean-up the build-up), some claim to use Seam Foam Spray cleaner on throttle body plate and later drive for 10 min at 5000 rpm to help to brake the build-up. I want to know opinions - will Sea Foam spray work, have anybody actually get positive results or am I standing before a very costly repair or putting my car on fire?
It is love-and-hate relationship
Thank you in advance, Denis.
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  #2  
Old 02-15-2013, 06:18 AM
JoeFromPA JoeFromPA is offline
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Location: West Chester, PA
 
Join Date: Jan 2007
Posts: 1,734
Mein Auto: 01 M5, 08 535xit
You can probably get this job done for $1500 instead of $6000 - consider getting a quote from a really good indy. This engine and it's basic architecture has been around now for a lonnggggg time - lots of people know how to work on it

You can certainly try seafoam, just be extremely slow about injecting a liquid into your intake process. However, if your air passages in the SAI system are truly blocked, seafoam isn't going to do jack for them.
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  #3  
Old 02-15-2013, 12:27 PM
H F H F is online now
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Location: Claremont California
 
Join Date: Mar 2010
Posts: 1,410
Mein Auto: 2005 545i
on another thread here... BMWOEM1 said u can remove the sub frame and exhaust manifolds and support the engine,,,, and clean the pasages from underneath... not sure what the cost difference would be. but it sounds better than having to remove the heads... and an easier task.. ive been lucky so far at 91,000 mi. im crossing my fingers it wont happen....
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  #4  
Old 02-16-2013, 12:22 AM
Deniskin Deniskin is offline
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Location: Chicago
 
Join Date: Feb 2013
Posts: 2
Mein Auto: BMW 545i
Thank you

Thank you, guys, will start to look around for a shop and consult with them. Reading info on this forum it seems to me that sea foam solution won't help in my case. It actually very depressing to have a such nice car and be always in and out of shop. Since I've bought it I had transmission replaced (put rebuild ZF), new ABS module, new battery, new water pump, new engine coolant compartment, new alternator and several other things. Fortunately out of $17000 the extended warranty I have paid around $15000 so far. It's been a pain to deal with them - I've paid $4200 for the warranty, NAC pinnacle plan. At this point they refused several things and refusing the current secondary air intake problem.

Will post later how things are progressing.
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  #5  
Old 03-20-2014, 02:19 PM
cocobimmerchick cocobimmerchick is offline
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Location: Texas
 
Join Date: Mar 2014
Posts: 1
Mein Auto: 545i
Hello just wondering what your outcome was I'm experiencing the same problems and I want to scream at the top of my lungs help
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  #6  
Old 03-20-2014, 02:44 PM
Damon54 Damon54 is offline
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Location: Dallas
 
Join Date: Apr 2011
Posts: 348
Mein Auto: 545
Please see Schpenxel's post on this. His effort resulted in him needing to rebuild his n62.
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carbon buildup, p0491, p0492, p2187, p2189, sea foam, secondary air system, system to lean at idle speed


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