How can i get started n keep itmy 93 jeep fires but dies rite away i have replaced the pcm the intake tempature sensor replaced all sensors n it wont stay started how do i get it to stay running

Jeeps most common problem is with these particular vehicles are the crank sensors. May also have a bad reluctor. which is part of the flywheel. What you need to do first, Need to first remove the crank sensor which is on top of the bell housing. Remove it and inspect for cracks if you see any cracks replace it. and reset gap. You can use a small piece cardboard like the thickness of an oil filter box,tape it to the tip end of the sensor,and reinstall. After inspection or replacement of the sensor, start vehicle,Also keep an eye on your tachometer . Your tachometer should slightly come up when cranking. If not replace sensor.The crank sensor is a part of the ignition system, the pcm needs to see where top dead center is or where #1 cylinder is to determine when to spark, simply put. So the pcm knows when to fire.

Try putting a timing light on it once you get it to crank and idle. Sounds like the timing is retarded too much. Advancing it should make it run better. Also check that you are getting proper fuel pressure to the engine.

1994 Jeep, Cherokee?

check all EFI system fuse first with a meter.

that is ASD drop out.
all jeeps from 93 to now have ASD relays.

43 code (nice checking you did) is bad spark.
when the PCM sees bad spark it then shuts every thing down

http://www.fixkick.com/Jeeps/ASD.html

cause is bad ignitor or coil.
the big v8, with the funny locking throttle body... short.
that is true if you crank for 5 full seconds.
to see if CMP sensor fails too.
cmp cam sensor is in the distributor base.
the ignitor is in the PCM, and drives the coil directly.
i presume spark is dead directly at the coil terminal
and is dead the first 2 seconds cranking. right.
takes 2 person to test spark. one at key , 1 and coil
the PCM only allows 2 seconds for spark to happen
if it fails ,it kills the ASD relay.
making trouble shooting tad hard , for those that dont know jeep ASD issues.
if the 5.2L cmp and CKP sensors work right, the PCM then creates spark
it does this via and ignitor.
the coil can be bad, as can the rotor and cap. id replace any old cap and rotor, fast. if the coil tower terminal HV. has good spark.

read failure to start test here
http://www.jeep4x4center.com/knowledge-base/index.htm?utm_source=cj#service
chapter 8D-6

and page 8w-30-4 , coil schematic.
as you can see, the coil has 12vdc key on for 2 seconds.
cranking.
the PCM ground the minus coil pin.
this charges and fires the coil
the ignitor transistor is in the PCM on this car.
The PCM monitors this pin minus , and if it fails to pulse,
it knows the Coil is dead. and then shuts down EVERYTHING EFI wise.

that is how it works.
tricky yes,but true.

me personally i have a 93 cherokee country and mine did that if its a automatic and you can keep it running by putting your foot on the gas but it wont shift right then it would be your (TPS) throttle positioning sensor, if thats not the fix i would go to the crankshaft positioning sensor if its worn out it can read the teeth on the flywheel and wont send spark hope this helps!

Take 2 screws out of PCM and replace with shorter ones

If you need further help, reach me via phone at https://www.6ya.com/expert/daniel_2eeb58b2fec3718e

CODE PO131 - HO2S 11 BANK 1 SENSOR SENSOR I CIRCUIT LOW INPUT CONDITIONS. POSSIBLE CAUSES LOOK FOR INTAKE LEAKS IN THE EXHAUST SYSTEM, LOOK FOR INTAKE VACUUM LINES LEAKS. FUEL SYSTEM TOO LEAN WEAK FUEL PRESSURE CLOGGED FUEL FILTER,WEAK FUEL PUMP. FAULTY HO2S SENSOR.OR HO2S SENSOR SIGNAL CIRCUIT SHORTED TO SENSOR. HO2S SENSOR DAMAGED CRACKED OR HOLE CLOGGED. PCM HAS FAILED.

Could be a crank or cam sensor gone bad. I suggest you get a haynes or chilton manual and do the testing outlined in them to determine which it is. Neither item is very inexpensive and the crank sensor is a real pain to replace. There are other things that can do that so testing is important.
Crank sensor is the most common failure but asd relay, wiring problems, bad ground on a relay etc can do much the same thing.
Anything you find that you need further help with I'll be happy to answer if I can!
Good Luck!

Check the air intake tube that goes to the throttle body, Check for cracks or leaks, This can cause unmetered air to get by the mass air flow sensor

The crankshaft position sensor was seriously problematic in those old jeeps. It's located towards the top of the bell housing slightly to the driver's side I think.

replace the crankshaft position sensor