Engine stalls but starts right back up - Wrangler Jeep Cars & Trucks

called ENGINE STALLS. and no engine told at all, nor transmission

3.8L
4.6L (2V)
4.6L (4V) = valve count per cyl.


stick shift M/T ,or A/T box.??? (a/t clutch can jam)
or will not sustain running. (I can not see it stall or hear it)
there are a huge list of causes and 20 or more tests
I can do a 100 pages text, just on this. causes are vast.
test 1:
with fast right foot at start can you keep it running?????
ever get a tune up fully in 25 years>? oops
test 2 of 100
start engine with , radio and blower and head lamps all on
do they all go dead at STALL, (as engine stalls )
try new spark spark plugs and HV wire sets, if distributor there, cap and rotor new? (not there sure) but wire sets are. there.
spark plugs 200k miles old? 100k is max max.
clean filters?
battery main 12vdc charged fully and lugs clean.?
oil lever good
fuel pressure good
engine cylinder compression tests pass. over 150psi.

if all electrics die at stall that means some kind if 12vdc power loss.
fuses all good?
scan the PCM is best to see if it sees errors, called DTC,
like P03xx errors that kill spark. or show any problems.
and more we must scan first, or waste vast amounts if time gue$$ing

looks like all 3 engines use wasted spark , no distributor
one engine has 3 coil pack to run 6cylinders.
others have 2x2 packs the V*8
I will stop here NO ENGINE TOLD AT All and I flat refuse to do all 3.

the car needs service, using tools and skills.
you can check fuse
you can scan it,
you can try to start the engine in Neutral.
or start car with driven wheels (L/R) raised unloading tranny if it is jammed.
jumper cable jump starts off line other car running , battery theirs
this solves 12vdc power uses on some.

My car runs good when it's cold but stalls once it warms up ...

www.badasscars.com/index.cfm/page/ptype...id.../prd289.htm

My car runs good when it's cold but stalls once it warms up? ... In this situation, you can usually re-start the engine once it has hada chance to cool back ... it'll fill-up and exits fuel right up and out the vent tube which dumps it down the middle of ...

Car starts and after warmed up.. it dies!! HELP! - Honda-Tech

honda-tech.com/...del.../car-starts-after-warmed-up-dies-help-2797652/

Jun 28, 2010 - Car starts and after warmed up.. it dies! ... but if i let it sits for awhile till the engine is cool down it starts right up but after its warmed up.. it dies.

Troubleshooting an Engine that Stalls at Idle When Warm ...

www.gearheaddiva.com/.../troubleshooting-an-engine-that-stalls-at-idle-...

For trouble shooting, install a fuel pressure gauge an allow it to sit near the windshield wipers while you attempt to make it stall. Does the FP drop while turning?

check the fuel filter and pump sounds like dirty fuel

closes bet its a bad alternator, bad battery or loose connections, last 2 options throtle needs to reprogram,bad as well.

It could be the coil is getting old. They begin to lose function when they warm up.

My 1987 buick centry limited cuts off when i drive but when i start it back up it will start right bacc up at times some times it starts and die agin but when it dies the battery light and service engine light comes on but once it starts the service engine and battery light goes away and dont do it agine tell it cuts off agine

does ur car have a engine light come on? cant really tell u answer if u dont explain more.

sounds like an ignition system problem loosing fire check the ignition module and make sure it is working right.

it sounds to me that you idle controll valve isnt responding (could be dirty) get a can of carb cleaner and clean the thottle body inside and with the engine running. squirt just a little and the engine will start to stall and the idle air controll will start to open ( you will hear it start sucking) then spray more in sperts try to keep the engine running at idle . this will make the engine RPM's change and open and close the idle controll valve thus cleaning it. when done save some carb spray. put the air cleaner hose back on. and start the engine and with the engine idling spray around the intake and base of throttle body if the rpms change you have a vaccume leak than will need to be repaired.
good luck
tech rating 3