93jeep grand Cherokee 4.0, has no voltage to coil

coil pack problems?
new cam timing questions?
no PROBLEM told all , so I answer blind and dumbb.
we (USA)_ have no Cherokee here, 2011, are you in UK or India or?
the Cherokee brand came back to USA in 2014,so you are not here.
got yah. or
or forgot it is GRAND.? << this>? or the SRT engine ?
pulled the coil pack wires all at once.
sure. never do that, it's 1 by1, but is not using old 2000 coil packs.
no engine told at all not even v6 or v8 or size told
no vin told so i can tell you what is under that hood.
google vin decoder and see for your self first
our GRAND has 4 engines, 1 is diesel so not that.
our GRAND is
3.6L 1 - 2 - 3 - 4 - 5 - 6. uses COPs, no coil packs just 6 cops o
5.7L 1-8-4-3-6-5-7-2. uses COPS. the PCM and harness break outs set order.
5.7L USA has twin COPS, 2 per bank 4 total. and going plug in one way.
6.4L 1-8-4-3-6-5-7-2. ditto. seems not sold in USA. ( data is hard to find on it)

6.4-liter SRT HEMI V8 engine that is only available on the Jeep Grand Cherokee SRT.

Time to meter voltage. Start with the 12V circuit. Are you getting voltage at the coil. Does the voltage fluctuate when the engine cranks? If yes to both check the high voltage circuit. Start with the coil then the distributor then each plug. You should be able to find where the spark is failing.

check your fuses and relays go to the auto parts store and buy the haynes repair manuel it is step by step what to check

If there is only 8 volts to the coil, that is your problem. There should be battery voltage (12.2) volts to the coil with the ignition switch turned on. Connect a voltmeter between the DARK GREEN/BLACK wire at the ignition coil and the POSITIVE battery post. Turn the key on. If the volt meter reads more than 0.3 volts then you have a voltage-drop (high resistance) problem on your coil B+ circuit. The coil is powered by the Auto Shutdown (ASD) relay - this is the MOST LIKELY source of high resistance in this circuit.

Check the voltage regulator. If that is pushing 12.6V then its something else. I would recommend checking voltage one step at a time going from coil all the way back to the battery if you have to.

focusing on the coil packs but no mention of changing or checking the injectors or wiring to those injectors

You can't answer that kind of question. Have to have the vehicle,know the systems and follow a diagnostic tree to find the problem.

try changing the crank shaft senor around the bell housing on the driver side

check to see if your coil is firing. if not, check for voltage coming to the coil. if nothing, it could be bad fuse link or supply from starter soleniod.

should have voltage on both posts of the coil. when the computer momentarly grounds the coil (in response to the crank position sensor sending it a square wave single). it will force a good coil to produce a spark. i would look at the coil again
good luck chris