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Secondary Air Injection Valve Replacement

502 Views 8 Replies 5 Participants Last post by  Saaberachi
Good afternoon,
Looking high and low for used or new Secondary Air Injection Pump Switching Valve. My 1995 900s convertible has a cracked and unusable one and finding a replacement has been a real challenge!
Any suggestions would be appreciated. Added a picture of what mine looks like if that helps anyone.
Thank you,
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Suggest removing that Air Recirc Contraption Entirely.
I would have.. the first time I saw it...on Any car I own.
A quick search also brought up an older VW part that looked very similar
Is it just a fat check valve? If so, probably any car with a SAS will have a similar thing... VAG, Volvo, maybe BMW or Mercedes.
Look up any mid 90s Mercedes. They all used it. Or just search for "Mercedes secondary air valve". It is a metal valve instead of plastic. I just installed one on my 94 NG900 with 2.3 not a month ago, after my 2nd Saab one broke after I bumped it while trying to access the radiator drain. This is just an example:

They are a fraction of the cost of a Saab one, if you can even find that. This one is high. I paid less than $20 for a brand new one incl. shipping. The hose ends are the exact same size as Saab. I had them send me the measurements before I ordered. The fact that it's metal, not plastic mean you will probably never have to replace it again. Just make sure the arrow on the valve points toward the engine when you install it (same marking as Saab). BTW, the same plastic valve was used on various Ferraris in late 90s, early 2000s, so you could search for that. BUT, because it says Ferrari, they are hundreds of $$.
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Volvo also uses metal valves, and they still fail. ;)
Volvo also uses metal valves, and they still fail. ;)
You are correct; any part can fail. On these, I've never had the valve operation actually fail. Because they're plastic, every one I've had ends up physically breaking, either at the nipple for the vacuum hose or the top of it (where it was originally glued together) actually blows off from the force of the air injection pump. Don't think you would encounter that on a metal one. I think this metal one is the 3rd one I've installed.
Judging by the look of it I would say that it is nothing more than a vacuum operated rubber diaphram inside. As long as you can find one with the same port Dimensions I would think it would work
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