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

What do these adjustment knobs do . Bad engine pic

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Old Apr 10, 2002 | 08:51 AM
  #1  
Bill In SoCal's Avatar
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Default What do these adjustment ***** do . Bad engine pic

You can only see the tip of one of them, but there are two black ***** that are attached to metal piping and go into the firewall. The ***** have a small hole in the top and grips on them that seem to be for turning.

What are they?

<img src="http://pictureposter.audiworld.com/12026/p4070005.jpg">
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Old Apr 10, 2002 | 08:51 AM
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I don't think they're adjustment *****. They're caps for the AC refrigerant bleeder.
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Old Apr 10, 2002 | 08:53 AM
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Default Can water get inside those little holes in the top of the *****? reason i ask is

i sprayed some water all around that area and now I'm getting some wierd sound in my console and my airbag light came on. But the dealer was fiddling with the radio too so I don't know if it is my fault or theirs.
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Old Apr 10, 2002 | 08:54 AM
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Default Probably not.

Those pipes are under high pressure, and any leakage would most likely get shot out. Besides, that's just refridgerant in there, and shouldn't affect anything.
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Old Apr 10, 2002 | 09:02 AM
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Dealer fiddling with the radio would be my bet.
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Old Apr 10, 2002 | 09:30 AM
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I don't that is teh case. I spray water all over my A4 engine last weekend. No problem
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Old Apr 10, 2002 | 10:12 AM
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Default k thanks guys. that rules that out. why the heck would my airbag light come on. but that's another

post :-/
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Old Apr 10, 2002 | 11:07 AM
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Default Airbag sensitivity control *****.

Hi pressure and low pressure AC service port caps.
;-)
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