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E60 / E61 (2004 - 2010)
BMW 5-Series E60 Sedan was first seen in the Unites States in the fall of 2003 with a 2004 Model Year designation. The E61 wagon followed shortly there after. The E60/E61 5 series is now available as a 528i, 528xi, 535i, 535xi, 550i and a 535xi sports wagon! -- View the E60 Wiki

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Old 01-05-2013, 10:21 AM
appleman appleman is offline
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Location: ny
Join Date: Jan 2013
Posts: 1
Mein Auto: 2006 525xi
2006 525i idle misfire/stumble

hey guys,

I have a 2006 525xi with an n52 engine and a bad idle misfire/stumble. The car has no check engine light. I've done some research about my problem and i've been pointed toward an idle control valve or a valve on the side of the intake manifold. Does my engine even have an icv? Upon investigation all I see is a throttle body. My n52 does not have the valve in the side of the intake manifold or above the throttle body (i.e. idle valve).
I also took the seafoam route. This fixed the idle issue briefly. Sadly after about 10 miles of driving the problem slowly came back and is now exactly as bad as it was. I'm stumped. Can anyone give me some tips?

thanks so much
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Old 01-05-2013, 11:06 AM
pcy pcy is offline
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Location: Boston
Join Date: Sep 2011
Posts: 2,059
Mein Auto: '06 530i, '07 C280, ML320
Did you read the diagnostic codes? Code(s) point to the Idle Control Valve?
Check DISA valve and see if it needs cleaning or broken.

Last edited by pcy; 01-05-2013 at 01:11 PM.
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Old 02-24-2016, 06:33 PM
eyecon82 eyecon82 is offline
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Location: IL
Join Date: Feb 2016
Posts: 8
Mein Auto: 2006 bmw 525xi
525 engines don't have a disa I believe
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Old 09-12-2016, 01:19 AM
phaduman phaduman is offline
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Location: San Jose
Join Date: Aug 2009
Posts: 40
Mein Auto: 2007 E60 N52
Hey appleman, did you get to resolve your bad idle problem? I have a 2007 525i with similar problem. Have changed fuel filter, changed spark plugs, coils and checked the intake area for leaks, no clue yet. As you said, there are no DISA valves in the N52 3.0L 525i engines, I am curious what it could be. Injectors are expensive to replace just to try things out. Car has 86K miles.

thanks for any pointers.
'07 E60 black/black, Wife: 328i sold / all electric now
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