Diagnostic port on a 1994 jeep grand Cherokee limited v 8

Where is it? is that the question, the DLC? connector>?
the 1994 needs a non OBD2 scan tool.
the innova 3140 dose this car, 93-95, OBD1 jeeps.

stalling in fact has 50 causes, my guessing that would be silly
ever get a tune up this decade? tops list of all time reason,
STATISTICS facts.
top reason (tech) to stall is bad spark, or misfire. (same)
misfiring engines stall.
but can you save the stall with a fast right foot. (free costs nothing test). and is 100x important that.
if yes, it will be misfiring for lack of spark or poor injection rates.
lf no? then we HAVE ASD relay drop out.!
ever seen it, or why and how it works and how the scan tool
tells you it dropped and why?
ASD 101:
http://www.fixkick.com/Jeeps/ASD.html

DTCs that drop ASD covered above, all cause STALL !

• 11 CKP crank sensor dead. 1996/7 (P1391) (P1398) misfire at limit ! CKP is an EPA requirement for 1996 rules. (misfire,etc)
• 24 TPS stuck high, cuts fuel. (P0123) "throttle position sensor'
• 42 ASD fails up to 1998 or can mean the Fuel pump relay output is DEAD. See FSM for details.
• 43 Dead spark (primary side) DTC errors (P0351)
• 54 (1993 my oldest book) means "no cam shaft sync signals", CMP. (1996/7) CMP = Cam position sensor. (or CMP is misfiring)
• (9D-hex? factory DRB? scan tool) ( or OBD DTC P1391) CMP/CKP loss. (1998+ code)

Check the fuel filter,nozzles and clean the injector mouth