5-Series (E12,E28, E34, E39, E60)Chat relating to the BMW 5-Series of all generations. Specific models include: BMW 518, BMW 520, BMW 520i, BMW 530i, BMW 528i, BMW 530i, BMW 518i, BMW 524d, BMW 525i, BMW 525e, BMW 528e, BMW 540i, BMW 535i, BMW 520d, BMW 525td, BMW 525d, BMW 530d, BMW 525i/xi, BMW 530i/xi. (BMW 5-Series Forum)
I know this thread is old but I am having an interment problem as described above. I have recently replaced the intake boot due to severe cracking. Does anyone have a picture of where the Idle control valve is? My BMW is a 1990 525 also. Does it connect to the boot near the air filter side? If so should I spray card cleaner up the hose? Just figured I would try cleaning it or would that hurt the problem? If it is the ICV I am "seeing" it had some oil in the tube would that cause it to malfunction? Sorry for being confusing with my questions. Thanx for any info.
Then I noticed the cause. Dude, it sounds dumb.... really dumb. and you're probably going to hit yourself in the head repeatedly if this is the cause, but this is what did it for me.
Check your drivers side floor mat. BMW floor mats are heavy enough to ride up on the bottom of your gas pedal... and if they're not anchored with those little clips... it's possible that's whats going on.
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I think the ICV is the problem but no one has picutres of where its located and how exactly to clean it. I am sure it super easy and right in front of my face just cannot locate and wondering if someone had a pic of it in the engine bay and describe how to clean it thanx!
Well its not that easy.You should most likely remove the throttle body and clean it.As crap (ie.. carbon) and other stuff build up,The space between the throttle plate is obstructed.That causes less air to pass through.This makes the IAC motor try to compensate.Ruff idle and searching idle.Remove and clean with carb cleaner.Then hit the ICV.This will result in a very noticable difference.Let me know if it works.If any of you know a better way allso let me know.the more input the better.
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