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Anyone have One of These??
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sjt_711
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Joined: February 17, 2021
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PostPosted: Wed Jun 02, 2021 9:11 am    Post subject: Anyone have One of These?? Reply with quote

I just bought a '95 EVC and it's frigging sweet, I love it.
Drove it several hours home after buying, opened the hood and noticed the secondary air injection air check valve was all burned up.

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So I'm searching now for one of these and have had zero luck. Does anybody out there have a parts vehicle or one of these laying around?

Thanks!!
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wannabecamper
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PostPosted: Wed Jun 02, 2021 9:32 am    Post subject: Re: Anyone have One of These?? Reply with quote

That is the check valve for the secondary air injection system. The part number is 037 131 367. It is hard to come by, but search with part number and you may be able to find it.
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xoo00oox
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PostPosted: Wed Jun 02, 2021 2:35 pm    Post subject: Re: Anyone have One of These?? Reply with quote

If that part is melted then the combination valve is probably bad and stuck open letting exhaust blow through it. there's a good chance it also ruined the air pump too.
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TheOneTrueQuux
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PostPosted: Thu Jun 03, 2021 7:27 am    Post subject: Re: Anyone have One of These?? Reply with quote

sjt_711 wrote:
I just bought a '95 EVC and it's frigging sweet, I love it.
Drove it several hours home after buying, opened the hood and noticed the secondary air injection air check valve was all burned up.

So I'm searching now for one of these and have had zero luck. Does anybody out there have a parts vehicle or one of these laying around?

Thanks!!


There's a NOS one on ebay in Latvia right now.

https://www.ebay.com/itm/202637378329?epid=9015280994&hash=item2f2e210319:g:wLwAAOSwa9dgjMWo

But as others have said, this didn't melt on its own, find the cause of this happening before you install a new one or it'll be ruined in short order.

Also, there are likely other similar parts that can be substituted. Other VWs from the same time period likely have a similar valve that can be made to work.
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sjt_711
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PostPosted: Thu Jun 03, 2021 10:56 am    Post subject: Re: Anyone have One of These?? Reply with quote

There no emissions standards for where I live. Seems like I could just bypass the entire secondary air injection system and never look back. Anyone have thoughts on that?
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wannabecamper
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PostPosted: Fri Jun 04, 2021 4:15 pm    Post subject: Re: Anyone have One of These?? Reply with quote

If you disconnect the secondary air injection pump electrical connector, then you will get a CEL. But if you just disconnect check valve and plug all vacuum lines and holes, then you may be good. You will probably need a filter on the SAI pump intake side though.

If you don't mind the CEL, remove all SAI parts, plug all the holes, and call it done.
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sjt_711
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PostPosted: Fri Jun 04, 2021 4:28 pm    Post subject: Re: Anyone have One of These?? Reply with quote

I'll look around for a generic check valve for now. There is no CEL at the moment and the van runs great. I just can't see spending a rediculous amount of time and money on a mediocre system that works for a few minutes on start-up. I wish I knew I knew what electrical specs the ECM was looking for on the silly SAI system cause I could absolutely design something to satisfy it if I knew exactly what the ECM needed.
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