OK, here's what you do.

1. Inspect all the vacuum hoses and the brake booster hose for rips or
cracks. Replace or fix the hose.

2. With someone keeping the engine running, listen for any hissing sounds
from the hoses in #1. This will ID any hose with a non-obvious problem.

3. Look on the top or rear edge of the throttle body. There's a black 10mm
cover plug (it may be missing) under which is an approx 8mm head phillips
screw. This is the Air Idle jet. Try to screw this out a bit: the idle speed
should come up. This may be all that's needed.

4. Look how the throttle body is attatched to the intake by 4 bolts. Take
off the big intake tube and look inside the throttle body. If there's a
build up of oily carbon, remove the throttle body and clean it up with
throttle body cleaner or brake cleaner.

5. Look at the air cleaner: there's a harness connector for the MAF sensor.
With the engine running, disconnect the MAF sensor cable. The engine should
run a bit faster. Put the cable back.

6. Your 96 has an OBD2 ECU system. Is the Check Engine light on? If so, you
need to get the error code if any, well, decoded. This will tell what may be
wrong,or at least where to start looking.

7. Verify that the cam belt and ignition timing is correct if you know how.

8. Remove the gas cap and drive the car. Does the engine still stall? If
not, you have a problem with the gas return or evaporative system.

9. If you can get the firewall mounted fuel filter out without breaking
hoses or connections, give it a reverse direction squirt of compressed air.
This will clean out most blockages.