Help -I have fouled up !!!-- Vacum pipes? - MINI Cooper Forum
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Old Jul 11th, 2014, 03:20 PM
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Help -I have fouled up !!!-- Vacum pipes?

Hi
I have a 2005 Mini Cooper S with a JCW airbox

I had to change the thermostat as it was leaking.
When I reassemble the air box I found a small vacuum pipe inside the air-box attached to some sort of a motor- the other end had broken off- probably me when I fought to get the top off
It looked to have been attached to some sort of a electric switch? this was mounted externally to the left and side of the airbox with one pipe attached which was at the bottom--and an outlet for a pipe at 90 degree with nothing attached. I took it at this pipe was to be fitted to the switch thing--- the only issue was that the top of the air
box there was a vac operated disc which raised a flap _ also with nothing attached to it.........

So

1)what is the switch thing?
2) where should the pipes go
3) what have I lost

The car sounds whiney and the engine management light is on with an undiagnosed fault code-- in a word HELP
can anyone photo or tell me where these pipes go -- wife miserable and accusing me of being an imbecile !!
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Old Jul 11th, 2014, 04:54 PM
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The following pdf has instructions for fitting the JCW airbox ...

MotoringFile - JCW Upgrade Kit Install
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Old Jul 11th, 2014, 06:19 PM
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Thanks but it did not quite do the trick

The connections are not shown other than the electric plug that forms part of the unti I am on about-- hope it makes sense

The pipes are very small 3 mm I guess if that -- black and ridgid
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Old Jul 11th, 2014, 09:48 PM
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Hi ya

The vacum feed for the airbox is taken from the bypass valve you basically put a tee in the line. So you can operate the airbox and bypass valve from the same source.
If the bypass valve has a short L shaped black tube connecting from the valve body to the diaphragm (standard) and the flap in the air box is missing or modded so the flap stays open., this is basically a de flap mod.
If it's not de flapped do it :-)

Hope this helps
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Old Jul 11th, 2014, 11:49 PM
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Quote: Originally Posted by clivewilsonrally (original)
The connections are not shown other than the electric plug that forms part of the unti I am on about-- hope it makes sense

Vacuum hoses are shown on page 6.
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Old Jul 12th, 2014, 10:58 AM
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All fixed now mate dogs arse of a job trying to figure out which way the damn pipes went and to what -- must admit I tried wedging the flap open and blocking off the vac pipes-- it sounded the dogs but I have put it back to JCW standard
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