A4 (B5 Platform) Discussion Discussion forum for the B5 Audi A4 produced from 1995-2001 B5 FAQ

On an AWM, what is the little black box on top of the valve cover that has 1 brn wire to it?

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Old 07-04-2008, 07:37 AM
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Default On an AWM, what is the little black box on top of the valve cover that has 1 brn wire to it?

Mine is starting to wither away like the check valves, a bunch of pitting and the wire is corroding...
Old 07-04-2008, 08:17 AM
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Brown is usually a ground wire.
Old 07-04-2008, 08:26 AM
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Default Yes, I am aware of that... The wire comes out of the coilpack harness and into this box...

I just want to know if it is a filter, amplifier or what... I am having some rough running issues along with low boost and misfires and everything checks fine... Plus, I want to fix this before it corrodes off completely...
Old 07-04-2008, 07:26 PM
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Default Re: Yes, I am aware of that... The wire comes out of the coilpack harness and into this box...

Aftermarket add-on by PO?.....on my AWM the brown wires off the coilpack harness bolt directly to a threaded post on the VC.

No box.
Old 07-05-2008, 06:05 AM
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Nope, most def OEM...
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