My glovebox door falls open to much annoyance to my passengers, when hitting bumps etc. I can't see anything wrong with it that I can fix.
Does anyone have an easy fix for this or know what's causing it?

Thanks

Same problem on my 90. Dealer sold me the metal bracket (from a 93) to bridge the square hole in the plastic where the latch catches. Had little effect since it is for a different style latch.
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Found a later model glove box latch with the “duckbill” facing the inside of the glove box. I thought it would slip under the bracket, and hold the tip of the latch in the square hole, but it doesn’t work. What next??
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Jim (90 244DL 170K miles) turbo sways w/poly, front struts & bushings, OD wiring, downpipe.

You are correct. There is no metal catch, at least, not on the late 240s.

I had this problem on both my '90 and '91.

I removed the glove box, You'll need to remove the glove box bulb or it will stay lit while you do the repair.

Scraped off the 'fuzzy' between the catch hole and the front of the glove box,

Cut a small rectangular piece of plastic about 1/16" thick - I used a piece of broken door side pocket that happened to be in the pocket and thus handy;

Glued the plastic rectangle right next to the catch opening with epoxy (JB Weld).

Replaced glove box.

You cannot see the repair unless you put your head down near the seat, and they both work just fine now.

I just went out and removed the glove box and low and behold there is a metal bracket that is pop riveted in place in front of a broken/chipped plastic pc. This must be a repair from the post owner. It looks to be factory, but I can tell it is not.There is sloppy drilling of the rivet holes. thanks for posting as now I found more sloppy work to repair on my car. I never would of found out if not for you. THANKS!!
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Kevin * HONDA spanking,1985 240DL * VOLVO ON!!!!

bend the locks latch catch to tighten the closed position.
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Kevin * HONDA spanking,1985 240DL * VOLVO ON!!!!

Latch catch? Is that the top of the glovebox case itself? That hard plastic so I don't know if I can bend it. Or maybe that's where the piece is missing?
Is something supposed to hold the latch at the top?

Cheers

never mind read above mine was a repair.
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Kevin * HONDA spanking,1985 240DL * VOLVO ON!!!!