If the car makes good fuel pressure with the new in-tank pump, and the main pump is not noisy, I'd leave it alone.
Is it a good precaution to change it? Sure. Is it necessary? I doubt it. I would be surprised if the main and in-tank pumps both needed to be changed at once. Save your money.
--
Rob Bareiss, New London CT ::: '87 244DL/M47- 221K, 88 744GLE- 202K, 91 244 181K, 88 244GL 145K

Not uncommon for a main pump to suffer from non-operating prepump. Kind of depends on the original conditon of the main pump and the time duration of the failed prepump. If in doubt of the main pump's out put, do a volume and / or pressure test. Main pump uses fuel for cooling, so a hot pump could mean lack of supply pressure, or just a tired pump. A simple amp check would tell you if the pump is drawing more than the normal amps to operate. This could indicate a tired pump and contribute the hot condition of the pump.

Myself...high milelage can contribute to a worn out pump. You can do the volume and amp check yourself. A shop can do the pressure check if you don't have the test kit. BUT, compare all the price. A pressure check may cost you about one third to one half of a new pump. So, if you like the car but a pump from FCP for about $125 and put it in yourself. You may need a filter also; $12.

Get a trusted 2nd opinion, if possible.
--
Bruce Young,
940-NA (current)
'80 GLE V8 (Now gone)
'83 Turbo 245
'73 142 (98K)
'71 144 (track modified--and going to be crushed unless...)
New 144 from '67 to '78
Used '62 122 from '63 to '67

If you were running on only the main fuel pump, it should be hot. Now that you have a running pre-pump is it still heating up? Is the pre-pump running?

BTW that pump uses the gasoline around it for cooling, so running consistently in the lower 1/4 of the tank can damage it over time.

Have a helper listen at the gas filler tube - hold the "Unleaded Only" little flap open. The pump runs a few seconds when the key hits Position II, without starting the engine.

The same thing can be done for the main pump. It is mounted such that it can be touched by reaching hard to the rear and upward in the LR wheel well. Same test.

Who is the "they" that replaced the pump? A dealer? Independent Volvo shop?

When the car "died" what did it do? Was it in motion at the time? how fast?

Good Luck,

Bob

:>)