1979-1993 & 94 Conv [Subscribe to Daily Digest] |
Matt,
When my folks got our first SAAB, an '84 900S (now a parts car for my "new" '84 900S), we had the same question: How do you get to the air filter?
Well, you have to remove the rubber bellows from the intake manifold-to-airflow meter (which sits on top of the air filter). A 7mm socket on a 1/4" socket driver (flex-type is great) will help from boogering out the slot on worm clamps like those.
Then, set the bellows off to the side while, if applicable, disconnecting it from the deceleration fuel-shut off valve--only on manual trans. cars--(it's a little black plastic capsule) which pops into the bellows and has a wiring plug and a vacuum hose attached to it. The bellows air temp. sensor is still attached to the air filter temperature box, don't remove that! Just let the bellows dangle between the radiator and clutch (best if engine is cool).
Now you've got a better view of things.
Next, take out the six screws (Phillips head) which fasten the airflow meter/air filter lid onto the air filter housing. Bend it up CAREFULLY and back toward the windshield. Let me say again, BE CAREFUL. As you bend the reservoir back, the fuel lines are being stressed (fine when they were new, but now they are most likely 17 years old and very brittle). They can break very easily and are about $25-35 each to replace!
Hold the airflow meter/airbox lid up with one hand and retrieve the old filter out with the other. Either wipe or vacuum out the air filter housing (bet you'll find a bug collection there) and pop in a new filter--or, see if old one is very dirty: hold it up to bright light & no light thru it = bad filter).
I know this is getting long, but since you have the bellows off, then save yourself some trouble later and clean the airflow plate (okay to lift it with some pliers on the bolt in it's center) where recirulated emissions goo collects. Gooey gas enters the intake manifold, where it's deposits ooze down the bellows and onto the airflow plate (which directs the fuel distributor to apply gas to each cylinder). Goo can cause airflow plate to stick shut or act sluggishly to incoming air (causing poor or no running).
Also, that goo collects on the throttle (butterfly) valve in the intake manifold. Take some carb cleaner and an old toothbrush and clean that up, too (goo can cause blockage of air past throttle valve and/or valve failing to return to idle position).
Just some preventative maintenance.
Good luck!
Micah in NC
'84 900S, 208K mi.
posted by 216.77.238...
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