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#4808479 - 07/08/18 04:03 PM Outside fumes enter cabin on Saab 9-5.
gr8gatzby Offline


Registered: 11/22/05
Posts: 607
Loc: Charlotte, NC
3 months with my 2004 Saab 9-5 wagon. Stage 0 was the first order of business, including cabin air filter. However, when recirculate is selected, I still get fumes from outside air inside the cabin. Was it installed incorrectly by my mechanic, or is this a design flaw in the system?
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'95 Ford F150 | 4x4 | 5.8 | 9MPG
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#4808497 - 07/08/18 04:50 PM Re: Outside fumes enter cabin on Saab 9-5. [Re: gr8gatzby]
edwardh1 Offline


Registered: 01/17/03
Posts: 2976
Loc: Coastal South Carolina
all recirc systems I think mix some outside air
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#4808505 - 07/08/18 05:12 PM Re: Outside fumes enter cabin on Saab 9-5. [Re: edwardh1]
Kira Offline


Registered: 08/19/10
Posts: 5406
Loc: Champlain/Hudson Valley
We've had 3 9-5's in the family. All of 'em allowed a bit of outside air to come in. It's an anti mold & mildew thing.
The Volvos I've had are 100% closed from my experience.
Also, FYI: There's an easy to reach hose on the 2.3l 4 cyl. behind the engine high up so it's quite doable. It can come off the oil drip box and stink to high heaven. Just shove it back on.

Which engine do you have? If it's the 2.3 has PCV modification #6 been done to it? If not it's real easy to do and takes about an hour. There are extra hoses on the right (passenger's side No. America) and one of them T's into the oil filler neck. A new neck is part of the PCV #6 kit.

Good luck with your Saab. They are easy and fun to drive....responsive.

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#4808576 - 07/08/18 06:43 PM Re: Outside fumes enter cabin on Saab 9-5. [Re: gr8gatzby]
slacktide_bitog Offline


Registered: 03/20/08
Posts: 6342
Loc: USA
What kind of cabin filter is it? Did you get a filter with carbon/charcoal? Was the filter sealed in a plastic bag when you bought it?

Recric doesn't necessarily filter during recirc mode (although some cars will run the recirculated air thru the filter, not all cars do this)

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