2001 xc/v70 starting problems

Recently, past two weeks, xc wagon problems starting, especially when warm
(20+ miles/minutes). Replaced immobilizer/atenna. Keys are fine. Dealer
check fuel pressure/pumps. No warning messages/dealer says that they
can't reproduce.

Usually fine when cold in the morning. Still will not start later in the
day - cranks, sounds fine.

Any other suggestions? Thanks

 

It's a long shot, but check the fuses yourself one more time.

My '98 S70 up and decided not to start one day after I stopped at a fast
food place. Just like your car, it had ran fine, would crank fine, but it
wouldn't fire. No trouble codes or impending trouble codes (the kind that
don't light up the "check engine light" but are still in the computer).

It turned out the fuse for (I think) the fuel pump and ignition was bad.
The fuse never actually blew, just the plastic part that gives it shape was
melted and so the metal spades weren't making electrical contact. I don't
understand it, but a new fuse and two months since, no further troubles.