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

is it possible to disable the EGR valve...

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Old Oct 9, 2005 | 10:10 PM
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ahmetze's Avatar
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is it possible to disable the EGR valve...
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Old Oct 9, 2005 | 10:22 PM
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Default Do you mean the secondary air pump valve?

Which is located at the back of the head on the exhaust side.
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Old Oct 9, 2005 | 10:46 PM
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Default ehhh i guess, all i know its called EGR valve, im gonna try to clean it

<img src="http://img.photobucket.com/albums/v69/ahmetze/BS/intake.jpg">
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Old Oct 9, 2005 | 11:02 PM
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Default Yes that is it. It is controlled by vacuum at the top of that valve.

Remove the vac line and the EGR valve shouldn't open.
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Old Oct 9, 2005 | 11:22 PM
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Default also minor air leak

<img src="http://img.photobucket.com/albums/v69/ahmetze/BS/eng67-suction_pump_rr_001.jpg">



<img src="http://img.photobucket.com/albums/v69/ahmetze/BS/eng67-suction_pump_rr_002.jpg">



<img src="http://img.photobucket.com/albums/v69/ahmetze/BS/12v96_vacuum11.jpg">
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Old Oct 10, 2005 | 05:18 AM
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Default You can't disconnect it you will get a fault code, EGR insufficient flow!

There is a way to stop it operating when you are driving but still allow the diagnostic test to pass. Ask on the 12v forum no-one knows anything about 12v's here.
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