I posted this several months ago.  Finally got it fixed, early
October. Replaced the Crank Positioning sensor.  $80.00 - No help.
Finally broke down and bought a junk-yard computer off a 4WD 318 (mine
is 2WD).  Presto. No more shutdowns.  

The truck seems to have a different "personality", also.  It seems to
have more low-end torque - quicker "off the line" -- or is it just my
imagination?  :)

**orig post**
1992 Dakota 318 A/T Will intermittently shut down  If I am travelling
at road speed the engine continues to turn, and in approx 8-10 seconds
it  may or may not start  back up, own it's own.  It's just same as if
you turned the ignition off and back on except.when it happens, the
tach falls to zero, and the "Maint Reqd" light goes off (it has been
on for some time) but all of the other guages continue to register,
normally. Also, the "check engine" lamp sometimes refuses to come back
on when the swirch is turned off and back on. (when it finally does
come back on, the engine will then start back up).

It has been doing this for about a year, and nobody has been able to
find it. The distributer module was replaced .. waste of money.  It
acts exactly like some "Circuit breaker" is tripping then resetting
itsself.  It is totally intermittent.  It may do it once/week or
several times/day. Can find no commonality (like I just hit a bump or
am in a hard turn, or whatever) except -- maybe -- it seems to be more
frequent during hotter weather.  

If it was the fuel pump, then the Tach and Ck Eng lamp should not
shutdown.  If it was the Ign switch, then all of the other guages
should quit. also?? Or am I wrong about that??

Have checked the Batt Cables, tugged and pulled on all harnesses with
it idleing, have looked and puzzled  and beat on everything in sight,
under the hood,  have cursed and jumped up and down.

I have a factorty manual, have studied the wiring diagrams for
Circuit Breakers, etc, can find none.

The thing has got me stumped.
So many Garys and Clydes ..so..
"Leroy"