Intake boots, and lean P0171 P0174 codes - BMW Forum - BimmerWerkz.com
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)

 
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#1 (permalink) Old 03-18-2009, 04:52 PM
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Intake boots, and lean P0171 P0174 codes

I am chasing a SES light with lean codes. It is off (for now) after I replaced the MAF sensor.
I read a lot of 3-Series owners fixing that problem by replacing intake boot tears esp at the Y area. I don't have any whistling air leak sounds that I can hear, and the boots look good far as I can tell without taking them off.
My question is are 5-series intake boots as common a problem as the 3-series?
-Rob
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#2 (permalink) Old 03-19-2009, 12:31 AM
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Yes These Intake Boots Are A Problem On The 5 Series ( E39 ) , Also On The X5. I Already Replaced Them Both. The Dealer Keeps Them In Stock.
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#3 (permalink) Old 03-23-2009, 04:50 PM
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MAF sensor seems to have been the problem. SES lgiht has not reappeared in 300+ miles. Thanks all!
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