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Check the plugs see if they are wet if so replace and mabe put a very small amount of oil in the plug holes and then check fuel pressuere and spark to determan what is missing to see why it will not run
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if new battery has 0 volts thats a short that would blow main fuse and damage/kill battery ---if it that your not getting power to start vehicle after dying and have no power through out vehicle jeep has been getting complaints for bcm and or tipm failing which gives the symptoms you have described https://repairpal.com/bcm-may-need-replacement-if-instrument-panel-lamps-flicker-023 http://www.jeepproblems.com/tipm/
new drivers door
you drop battery neg lug first before work(per fsm warnings)
you made short circuit and borked the vtss or skim
so not the immoblizer lamp in dash glows, it dont lie.
as that cuts fuse after 3 second run time (by design!)
use a scan tool see what errors you have,
nothing wrong with the ECM unless it has the voltage regulator as part of the system
indicates faulty wiring and faulty alternator
have a load test done on the battery
have an auto electrician do a full charging system check
charging voltage should be 14.5-14.8 volts DC
battery voltage should be 12-13.5 volts dropping to 11 volts when cranking the engine
make sure that the drive belt tension is correct and the belt is in good condition
probly your alternator. at real high rpm it may still charge but not at low.
also my be the battery it wont hold a charge then the alternator is trying to power everything at low rpm. then u drop to low and stop charging enough and the coil or fuel pump havnt enough power. if you use a volt meter and watch it. u should have 13 or more all the time and not morethen 15.5 if its working then probly the battery.
another posibility is both
check ur battery cables. corrosion can cause it to not charge.
also make sure ur headlights arnt on because thats putting more on the altornator
It sounds like you may have a bad connection somewhere. Start with your battery cables and then look at all of your ground wires as well. When you try to start your jeep see if the wires from the battery get hot.
could be the battery still or it could be your battery head isnt contacting well. wen your rev the battery is good for some time and later thesame problem then i think your alternator isnt charging your battery which kills battery life span. try all this and if no charge get back to me.
Check the battery, it sounds like it's flat. Try charging the battery to see if it recovers, but if the battery is about 3 years old or more it is likely to have failed and replacement is the only viable solution.
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