Here's a Volvo schematic of the later 240 dash assembly to help supplement Art's pics in this discussion.


(full parts list is here https://www.volvopartswebstore.com/showAssembly.aspx?ukey_assembly=242099&ukey_make=865&ukey_model=20826&modelYear=1990&ukey_category=7854&ukey_driveLine=394&searchString=dash)

Those missing 1/4 turn plastic screw studs (#19 in the schematic) at the bottom of the center console side panel are unique to 240s of all model years. The black ones (used in later years) are p/n 1234286; the common beige one is p/n 1307258; early brown is p/n 1307260. In the current Volvo parts chain these are listed as "see dealer". Dealer service and Volvo indies usually keep a parts box of such fasteners for use by their mechanics, so worth a visit or phone call. Failing that, a parts car is your best source, either at a yard or advertised online. Simplest may be to reach out on social media and Volvo forums such as here with the color you need for someone who has a couple they'd be willing to mail you, like for a small e-transfer fee.


If the two, small Phillips head screws at the very bottom above the carpet (#20 in the schematic) go missing, a suitably sized standard Phillips head sheet metal screw can be used, maybe using a felt pen to blacken the head for looks.

Any missing large flat headed, knurled edge, 90 deg, black plastic screws (#28 in the schematic) are common to all the 140/240/700/900 RWDs. Most Volvo and indie shops will have a good collection. Those are p/n 1247572 and still available in the Volvo parts chain for a couple of bucks. BTW, if the end tab loops get flattened so they no longer hold well, wedge a scrap of rubber in the loop. In a pinch, a cut down large plastic drywall expander can be used with a washer, sometimes not needing a screw, instead inserting a scrap of something to spread the tips and jamming in a screwdriver to turn it. Again, a felt pen can be used for looks.


As for the driver side felt, I believe there should be two of those knurled, flat headed plastic fasteners at the firewall. The front edge of the panel may well just be secured to the knee bolster by those large barbed clips. It's not clear to me from the schematics which way they go. If you can't easily figure it out then, in general, such barbs normally go into the harder material and/or have that side of the tab accessible to be able to slip a screwdriver under for removal.

As for the fasteners for the knee bolster assembly (required for air bags), the Torx headed metal screws under the rectangular plastic plugs used in the face are common to a number of similar under dash locations in later 240/700/900s and more. Earlier versions with Phillips heads (large #3, flat tipped) can also be used.

Your comment that it's been 5 years since you took everything apart made me chuckle. We've all been through this. Whenever I take a major assembly apart, at the start of the job I always ask myself, "Will I remember how all this goes back together, which fasteners go where and where I've stashed them?" For a same day or weekend job (or if it's a job I've done dozens of times, like tearing apart my Volvo consoles and dash), I'll usually trust my memory and put the fasteners in an obvious place. Maybe also for a one or two week job, but beyond that I'll worry there will be one or two fasteners I can't remember what they look like or where I tucked them, now making for a treasure hunt, soon becoming frustrating, also leading to finding other wayward things to further distract from the project. Referring to Volvo schematics on Genuine Volvo parts sites such as the above can be very helpful. Some people tape fasteners in place or on the part, which is great as long as they stay taped, better still use a plastic sandwich bag. For machine asssemblies, there's always doing a trace or sketch on a piece of cardboard and poking the fasteners through. When multiple parts are involved, such as tearing the dash down, I usually have a number of cardboard boxes nearby where I'll throw in just a few parts from an area along with their fasteners. Worst jobs I've done are heater cores, requiring a semi-full teardown of the dash and copnsole area then waiting a number of weeks for parts. Those were at least 5 cardboard box jobs, plus all four footwell areas and every other corner I could safely stash parts. Worst part is working with black fasteners in a black interior, either in a dark garage or with a low sun trying to blind me.
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Dave -still with 940's, prev 740/240/140/120 You'd think I'd have learned by now

I was thinking, sit comfortably and use a mirror and flashlight as you look in the six places I point out in that write-up on the 90 dash.

Now, on both my 89's there are five of those pinwheels for the driver side felt. I've been in there a lot lately, mucking with the chinabay keyless units I hide up there. Those fasteners are rough in the winter. Tear up my thin skin when I forget a small slotted screwdriver. But I don't believe you have any under the steering wheel, or maybe just two at the floor, I forget.
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Art Benstein near Baltimore