🚀 go-pugleaf

Seeking help from netfolk on the following problem:

1991 Ford Aerostar 4.0L AWD EDIS

During hot summer days (ambient temp 28 deg C or hotter) after driving
a half hour or more (city or highway) with A/C on, engine hesitates &
dies out.  Temp gauge shows just above half-way mark, & Service Engine
light is not on.  There are no trouble codes.  The engine cranks
normally but will not start.  When a plug wire is removed and the
engine cranked, there is a spark from the wire.  A new fuel filter,
fuel pump, & fuel pump relay have been installed without solving the
problem.  This has happened a couple of times each summer for the last
3 years.

Any ideas?

TIA,
Tim.

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