As Spook alluded to, do not ignore the ignition side. You may well have multiple issues going on with your car, but the particular symptoms you describe in the above post of starting okay but with occasional missing/hesitation and needing to push the gas pedal when cold then smoothing out and running okay when warm are indicative to me of electrical and spark issues, not necessarily fuel starvation, although that's still a possible issue for you.

If it was the power stage ignition amplifier failing (thermal paste failure) or the RPM sensor (on the bell housing, you do not have a Hall sensor on your LH 2.4 with EZK-116) or even the fuel pump relay (you should have the small green/blue Hella cube relay in your 940T) then things generally get worse as the engine warms, not better.

IMO for the particular problem you describe above, you should be looking at, in order of simplicity and likelihood:
o Fouled or badly worn plugs (forget platinum or multi-electrode, stick with quality OEM style copper plugs).
o Loose fitting or improperly seated ignition wires on the spark plugs or loose caps on the threaded plug ends (this has in the past given me the exact same symptoms in my 940T as you describe).
o Loose fitting or improperly seated ignition wires on the distributor or coil (especially the lower wire on the distributor from the coil).
o Ignition wires failing or dirty (they don't last forever, also oily residue on the spark plug or boot may be from a leaking valve cover gasket or oil filler cap).
o Distributor cap/rotor worn, dirty, moisture, cracked (often ignored on the 740s/940s as the rear mounted distributor is a bit awkward to get to and not overly cheap to replace, choose Genuine Volvo/Bosch).
o Worn distributor shaft seal/bushing (evidence of oily residue inside the distibutor cap)
o Failing power stage ignition amplifier (left front fender)
o Failing injector (radio suppression) relay (right front fender)
o Leaking injector seals or sticky injectors (uncommon with these pulsed injectors on the fuel rail)

Being a newly acquired car with unresolved issues from the PO, as long as you're checking and cleaning up the ignition side then do some preventive maintenance like refreshing the thermal paste under the ignition power stage and carefully inspect the RPM sensor cable (signs of worn or split sheathing, especially down by the sensor itelf). To prevent moisture from becoming an issue, apply dielectric silicone grease (spark plug grease) as a waterproofing sealent to all ignition wire boots and pack the female socket side of the electrical connector on the power stage -you can do the same on the fuel/air side electrical connectors such as the AMM, IAC, TPS, just not the O2 sensor connector. If you do a decent job of waterproofing the electricals you should be able to lightly wash and rinse the engine and under the hood and restart without a hiccup, as both my engines do. Keeping oil and dirt off rubber, plastics and wiring will greatly increase their longevity.

Do some more poking around in the FAQ. There are a number of areas and many tips in the FAQ that address the kinds of issues you are having. Remember that you do not have Rex-Regina, you have LH 2.4 in your B230FT (all 1990-on turbos used LH 2.4).
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Dave -still with 940's, prev 740/240/140/120 You'd think I'd have learned by now