1998 Ford Ranger, 4WD, 4.0 V6 Car stalling duri...

Ranger not ford f100 Ranger.
When did it last run perfectly, last week, last decade or? never seen it run right..
lots of causes over up to 50.
I gets warm means engine,or outside air? temps.

so the spark plugs are bad or fouled. replace those old HV spark wires now.
it's over heating? the engine.
bad fuel
the classic answer is
bad engine, bad spark, bad fueling , in that order
or is the cause (or EFI failing)<< sensor etc.
this USA car (if is ) can OBD2 scanned easy, scan it.
do you want us to guess,? only.
or do tests, will you buy test tools to solve this?
there are tests for each cause of failure.
die out we call stalling engine,
when it wants to stall, can the fast right foot save the stall?
I guess car engine starts and runs cold? every time?
ever get a turn up,

engines 1996, diagnosis is best done, knowing first what is there,

2.3 L OHC I4, Pito LL23 4 cylinder but 8 spark plugs, yes.
3.0 L Vulcan V6
4.0 L Cologne V6

so when dead, and warm dead, check for dead spark?
check engine compression above 150psi on all cylinders
check fuel pressure when dead./

you can switch into and out of the auto or 4 high modes while moving.

If you want to use 4 low you must stop and place your transmission in neutral. While stopped, turn the switch to 4 low. To get out of 4 low, again stop and in neutral switch back to desired mode. DO NOT SWITCH TO 4 LOW WHILE MOVING!

Sounds as if you may have a MAP sensor reading incorrectly when warm and causes the stalling. You may also have a vacuum leak that is not noticeable during warm up or while driving.

Sounds like it's gone into limp mode at first. Then the fault has stopped the car. You need a code reader to check the fault, which will point you in the right direction. Could be a lot of things!

MOST OF THE TIME BEST TO LET DEALERSHIP REPROGRAM IDLE BECAUSE STALLING AND WAITING FOR CAR TO RELEARN TO IDLE.CAN BE DANGEROUS.FOR A CAR STALLING OUT AROUND MOVING TRAFFIC.

Clean the temperature sensor wire connector.
Replace the temp sensor.
Check the condition of the sensor wire cut(s) or short onto the engine block.
Monitor the fan operation with the hood open during warm up (0-15 minutes.) It should ran after the engine coolant temp get above 195F +.

Clean air filter. Air restriction will will make engine ran RICH and stall. It can also block the catalytic system is too much fuel pass though the cat.

I had a similar problem with a Ford Excursion, it turned out to be intake manifold gaskets. It would stall then start right up again, it ran fine during warm up. But, once fully warmed up it would stall at stop lights and stuff like that. I did get a check engine light, the code was lean condition. I don't know on a Jeep, sorry I can't be of more help.

check your fuel regulator, pull the vacuum line off and see if its leaking fuel by the diaphram inside...
if you need more info just comment and we can trouble shoot this with you

If your car has an automatic transmission,its very likely that torque convertor clutch switch may not be working properly and is causing your engine to stall at low speeds and during braking.have your trans checked out by a pro and verify the condition

sounds like fuel pressure reg on fuel-line