1991 jeep cherokee starts then dies and wont fire

SOURCE: 96 jeep grand cherokee 4.0

change the computer .... PCM get a used one it fixed mine had same problem

SOURCE: 1995 JEEP GRAND CHEROKEE RAN AND DIED WILL NOT START

IS IT THE 4.0L?IF SO U MAY HAVE A BAD CRANKSHAFT POSITION SENSOR.

SOURCE: 2004 jeep grand cherokee laredo wont start. it

Replacing the O2 sensors in a large majority of cases is changing the result, not the cause of the problem....Large variations in exhaust quality often are beyond the operating range of the sensor, causing it to throw a code. Sort of like a situation where you are trying to read something but the words are too small to see so you (like the sensor) will say "I can't read this"...nothing wrong with you, So putting another person where you were won't change anything...words are still too small, and they too will not be able to read them.
A code scan and some individual component tests will likely give you an idea what's going on ...either you have too much/too little fuel, or ignition spark is weak. Any of these items have several causes but can change the quality of the exhaust enough to cause your problem.
Largest problem with offering an on-line diagnosis for you is that without the ability to do the testing I suggested, all I could offer would be guesses. (which can lead to expensive mis-diagnosis)

SOURCE: 2005 Jeep Cherokee wont start. stater and bettery

Too many items that can cause that for anyone to give you an absolute "fix" but : You need to do some testing to narrow it down to if you have a fuel or ignition problem (spark). If it starts when you crank it and spray carb cleaner into throttle body, then it's on the fuel side.
One common item to both and a common failure item as well is the crank position sensor. Check that as well. There are tests that you can do using a digital volt-ohmeter. Tests and expected results are listed in haynes or chiltons as well as other inexpensive manuals. Don't change anything unless you verify it as bad and if you have a security system make sure it is not locking you out from starting.
Once tested, you can ask back here for specific problems if any.
Good Luck

Testimonial: "All set thanks"

SOURCE: 2002 jeep grand cherokee with 4.0 engine will die but restart

p0340 is the cam shaft sensor, this will cause it to cut off while driving, hardtime starting, p0351 is the ignition coil A primary/secondary curcuit mal function. p1391 is ignition system misfire, this could be plugs, wires, or coils. first of all have the cam sensor changed and it may correct the rest of the codes. when fixed turn light off with obd2 scanner. if you do not have one, then any auto parts store will erase the codes fo free of charge.