On the 850r there is an air pipe that drops down below the MAF sensor. What does it do?
I assume that it is part of the breather system but I need confirmation.
Working from the air box go past the sensor wiring and then directly below that underneath the pipe there is a blue labelled rubber pipe.
What exactly does it do? And what problems can it cause if it it split/broken etc?
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Thread: Breather Pipe - what does it do?
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Wednesday 17th August 2005, 10:36 #1Senior Member
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Breather Pipe - what does it do?
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Wednesday 17th August 2005, 11:19 #2Shiny Superstar
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As far as I knew it is to do with the operation of the BCS (boost control solenoid) and should be replaced if the elbow or pipe is split.
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Wednesday 17th August 2005, 11:24 #3Senior Member
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Thanked 9 Times in 9 Postswhen the bcs opens the expelled air goes back into the intake system through this pipe.
now : 850 2.5 auto
Ex : T4 with NOS on board
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Thursday 18th August 2005, 17:45 #4Senior Member
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Thanked 0 Times in 0 PostsSo apart from a Lambda light showing a potential MAF sensor problem does it cause running problems?
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