Had to tow my son's '88 740 Turbo wagon home this week (157k miles) .

Car died at gas station.  It ran fine until fill up and then very
rough after fill up.  Then no start at all.

Now at home, car cranks and appears to fire, but on release of
starter, it will not contine to run.  Thus ignition is good.  Appears
not to get gas.

Two Questions:

1) Are there any typical failures to look for in this category?
Relays, grounds, air mass sensor (but a fine wire break might trigger
a limp mode?), computer, ...?

2) What would be the best manual : Bentley Volvo 240 (does it cover
the 740?) or a Volvo electrical manual ?  Am not familiar with this
car and where the various parts are located.  My son's Haynes book is
not detailed enough.  Need to known the circuits and where the
components are located.

Thanks.

John S.