so pulling the gas tank is first? really?
no engine stated, so must guess... on parts. 4.0l or 4.7liter?/?????? the 4.7 has 8 cop spark coils. so????
the 4.7 is a V8. so??
Cops or not make big differences.
ever get a full tune up this decade, white all parts.
if COPs with new boots? spark plugs, and air filter??
the ECU also tells you at stall why it did, most times, the not looking
makes it 10x harder to find, the ASD relay may of dropped out.
(with DTC missed by you)
the PCM works OT, to not allow stalls, so if it did, its real bad.
here is how ASD works
http://www.fixkick.com/Jeeps/ASD.html
now stalls, in the macro views, (physics)
1: lost 12vdc to PCM or spark
2 lost compresion to any or all cylinders.
3: lost or weak spark or ASD drops off , then engine dies.
4: bad fueling, (too much or too little for many reasons.
so the fast right foot fails to keep it going
that means ASD DROPPED OR fuel is cut or it flooded
so if it dont start and its seems flooded, snif sniff, then use super secret unflood mode, cranking wot, wide open throttle cuts all fueling clearing said flood,
if it wont start, pull in mr. obd2 scan tool
crank for 5 seconds, and release key (not off)
scan tool tells you most the time why.
dont be blind learn to use a scan tool and they are cheap.
less that 2hours shop labor. so.... its and investment. grade. thing.
with future pay back and even profit, (do the math)
i have a innova 3160 just for my jeep and 6 more for other cars.
this tool sees ALL jeep codes, factory codes and full live data.