Where is Kombi valve (EGR) on 2.8Q 30v

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Oct 10, 2005 | 09:48 PM

JJCNSX

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Where is Kombi valve (EGR) on 2.8Q 30v

<center><img src="http://pictureposter.audiworld.com/74141/img_1539.jpg"></center><p>hi all,

I was told to check the vaccum/kombi valves for code 16795 - Secondary Air Injection System: Incorrect Flow Detected
P0411 - 35-00 - -

I am not 100% sure which ones to check (mine is 98 2.8Q 30V), i think the kombi valves are the "square looking boxes"... I did notice some of the hoses from/to "square boxes" are "crunchy".... is that right? But, i am not sure if they are leaking or not.. If i should replace them all, please let me know what size should i use....

Please help.. Thanks in advance..

-jjc.

Oct 11, 2005 | 04:21 AM

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The combi valves are on the back of each valve cover

Oct 11, 2005 | 06:10 AM

JJCNSX

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so, you cannot see them from the foto here?

if so, can you please circle them or post picture of them?

from bentley repair manual, it does seem like the 2 square boxes are komi valves though..

thx..

-jjc.

Oct 11, 2005 | 06:54 AM

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No, they are not visible in this pic. The square boxes are the sec. air solenoid and the

variable intake solenoid

Oct 11, 2005 | 07:15 AM

j31izzle

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it should be right behind that little box. it kinda looks like an oversize fuel press. regulator...

that's in the pic on the right.

alen

Oct 11, 2005 | 07:29 AM

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Here's what it looks like, one per side

<center><img src="http://www.squarewave.com/army/andrew/ttStuff/serpBelt-008.jpg"></center><p>
and here's the location diagram (#3 and #8):
<img src="http://pictureposter.audiworld.com/80906/secondary_air_inj.jpg">

Oct 11, 2005 | 07:53 AM

JJCNSX

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thank you so much!!

Would i have the access to all the Kombi vaccum hoses without having to remove a lot of engine parts?

What size of the hose are they? and how many each? can i get them from Dealership, P/N?

Once again, thank you all for speedy replies.

-jjc.