the full 60k mile tune up was done.
you picked the most hard fix of all and guessed wrong, wow.
if the engine is good, compression great.
there are only 3 causes of stalls, in pure Physics. bla bla....
in reality parts wise over 50,, guessing is not going to work.
what does worK? diagnosis, want to test or guess.?
on all jeeps we have this funny thing called ASD,
but first, i must ask a key question. can your right FOOT save the stall if it gets happy footed , at the stall point?????? bid deal important that.?????
ill pretend NO,
for THAT.( post the facts ,im showing real tests , and real results here) yours will vary.....
lost spark?, is the cause, not fuel.? (efi cuts fuel for loss of spark in the ECU LOGIC, so spark is first ,if hot compression is not dropping)
but id check the ASD next or drive with a scan tool attached
(any) and see the PCM/ECU tell you why it stalled
! , it will 1/2 the time.
in addition to that, the ASD relay must be monitored, (scan tool will do same)
if the RELAY DROPS?
then we know why , see?
see the 8 ways to DROP and ASD here !http://www.fixkick.com/Jeeps/ASD.html
see those, if they drop , each tells you why.
if the ASD did not drop, then it starved for fuel. (compression good)
say , you get no DTC errors (scanned), and ASD holds fast,. at stall?
does it starve for fuel with gas cap loose , then wrong cap
its missing the vacuum breaker inside, a 5 buck fix. and kids can change it. or worse?, caused it.LOL
we use a fuel pressure guage
at the fuel rail (TOOLS RULE)
if the pressure drops, at stall , and not ASD drop.?
then you have bad wiring from the fuel pump relay to the tank pump.
or a bad relay. the volt meter will prove that.. easy.
very common on all EFI cars, bad wiring, and 10x that in the salt belts.
google salt belt, or wiki it.
this is how all 1993 jeep to present run. ASD is first to watch , hint.!
ASD dont drop:
if fuel pressure is good?, then wrong tree to bark up.
if fuel pressure was low, check voltage to pump cranking
must be 12v, or 11, if cold and battery weak
less voltage , is BAD. fix bad. (clean connections.)
only takes 3 tools.
- volt meter
- compression gauge.
- fuel pressure gauge.
a vacuum gauge part of a hand vacuum pump is nice.
most fail paths can be found with minimal tools. about 60 bucks worth. in any DIY shop.
and sorry , you cant fix modern cars
with out a scan tool
buy, rent or barrow one. they are everywhere.
all answers, USA and no engine stated so 100% generic answers.!
not flex fuel opted, not CNG engines.
and P0181 not set, pump dead, error fuel pump.
see this page.
click on diagnosis section see all those DTCs, get any????
loss of cmp , loss of CKP
gross missfiring? codes.
endless really, scan it. at stall , scan it.