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

Please help with some boost issues..

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Old Oct 24, 2007 | 05:10 PM
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Default Please help with some boost issues..

Well today I noticed that when i start the car Rpms jump to 1500 then settle down. My boost gauge is only reading 10inhg vacuum. Then when I drive it the boost gauge goes all the way up to full boost but then bounces to full boost back to zero to full boost again. So far ive checked my n75 swapped it for another one its good. Checked all the boost hoses there fine. DV is working good. Maybe a vacuum leak? So much stuff i dont know what to check. Can the any of the valves cause this (check valve?). I have a k04 with APR chip, forge DV, N75 C, no codes.

Thanks for any help.
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Old Oct 24, 2007 | 06:03 PM
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you should get the right software, pressure test the system... go from there
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Old Oct 24, 2007 | 06:15 PM
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Cant afford the software...To pressure test can I cork of the compressor side and add psi?
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Old Oct 24, 2007 | 06:27 PM
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Default Re: Cant afford the software...To pressure test can I cork of the compressor side and add psi?

<ul><li><a href="http://www.audizine.com/forum/showthread.php?t=64411">http://www.audizine.com/forum/showthread.php?t=64411</a</li></ul>
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Old Oct 24, 2007 | 06:35 PM
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Thanks great stuff.
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