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Stalls when hot - Craftsman 18.5 HP 42"

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Why does 1992 isuzu trooper runs for a few seconds then stalls and won't keep running? I've replaced the fuel pump,fuel pressure regulator,and fuel filter. Spark plugs and wires have been changed also


hot or cold engine or both?





which engine, to work on one, you need to know what it is

and what EFI system it uses. or its all just a crap shoot.

no new distributor cap and rotor why skip the full tune up,. why?



first questions.

1: can you save the stall with a a fast right foot.

2: why change out pump etc, if fuel pressure is at spec, a $20 tool would have saved you 5 hours hard labor and bath in fuel? why?





Stalls 101.:



the engine can stall for over 50 reasons are you going to do all 50?

surely not. why not consider diagnosis.. as a path.

1: car stalls, right foot saves it. and can drive fast if i keep foot busy.

a: ISC stuck closed.

b: EGR valve stuck open (depends on which engine options)

c: low compression on one or more cylinders.

2: can\'t save it from stalling (right foot)

a: fuel pressure is low. (wires bad.)

b: lost spark, for any reasons.

c: lost 12vdc to the EFI system( killing spark and fueling)



stalls.

hot or cold or both

stalls, can save it or not, hot and cold

hot restarts are easy and it runs good hot,yes./no.



there is lots more to it, then just stalls. lots more.

Aug 28, 2014 | 1992 Isuzu Trooper

1 Answer

I have a 1.6 auto petrol renault modus reg55.After I turn on the engine if I push a hard break the rev falling down and the engine stop.But only at the first few miles. Any idea for this problem? Thanks


reg codes only work in UK, use real years..... so ROTW can tell.
please, tell what it does good and bad driving, idling , parked, moviing
hot and cold engine, full power from engine on hills.
stalling (it stalls) but when does it stall, under what conditions. hot or cold engine. only at stop lights hot. or>????
when an engine is cold the RPM is very high (iAC device) and it will not stall cold , if it does that is key.
if it never stalls hot. and runs perfect hot say so.
all these, clues build evidence. to what is wrong.
then we do tests.
PS: ever think to get that 60,000 mile (100km) tuneup>> now be it.

Jul 01, 2014 | Cars & Trucks

1 Answer

1998 dodge caravan


Fix the overheating problem, first.

Apr 21, 2014 | Vehicle Parts & Accessories

1 Answer

Replaced iac valve engine will not idle


wow , no year stated. amazing....
which engine? size and gAS or diesel>?
stalls only hot?
is thermostat good and holding 180F or more???????
why gue$$ ?

Stalls have huge causes.
1: the ISC sticks is but 1 of 50 causes (have list, i pass)
misfire is the other
the EFI Tries very very hard to stop stalls, (opens ISC/IAC 100%)
if it can't. it stalls.
why did it stall, lots of ways.
Misfire from too lean or flooding.
EGR stuck open. is #1 all top DOG for stalls.
EGR can stick open, and when it does, it will stall

no the big questions, not ever answered here ever.....>>
can you save the stall with a fast right foot action.?
easy
tad hard.
impossible.
The answer here, can save tons of hard work.

and is the CEL glow key on, in the dash? Check engine light at key on
then stay out driving, NO< why not scan this car.
do not ever ignore this lamp, scan it or spend eternity fixing car.
buy a scan tool, and learn to use it.
learn how sensors. work and how they read.
learn what closed loop is. (if not in CL hot , fix that now)

if the engine drops closed loop, hot, at idle this means
fueling is out of control and idle is only a victim.
check closed loop status hot engine. and win.


here are all the steps 1 by one on a good engine.

this is just a typical 1.6L 16valve SOHC engine.
MAF based injection, here. any motor with maf , like this..
http://www.fixkick.com/ECU/Authority/A_Full_OBD2_scan.html


Feb 17, 2014 | Jeep Liberty Cars & Trucks

1 Answer

Accord starts shuts off


stalls. engine stalls. Stalls only HOT. and fails hot soaked.
stalls have 4 paths ?
1: lost DC power, to EFI (spark and fuel brains) "loose fuse?"
2: lost compression only hot (compression gauge to rescue)
3: lost spark or the classic, never doing 60k mile tuneups.
or the classic EGR stuck open , again not ever cleaned at 60k
4: bad fueling. (too much floods, it and stalls it, or tool lean it dies)
(or stuck closed ISC) we clean it at 60k with the EGR. as part of the 60k service points listed in the missing operators guide. (bet)

in that order, this 4 macro paths to , no stalls.
do you want me to guess which of 50 parts are bad.?
or do the 4 tests. to find which path it is.
one takes a month, other 1hr.

one more test. can you save this stall with a fast right foot?
Y/N?

and how easy was it to save, if true.

Nov 29, 2013 | 2002 Honda Accord

1 Answer

Stalling in hot weather


intake air temp
mas airflow
coolent temp

Jun 02, 2013 | 2007 Chevrolet Tahoe

1 Answer

Car stalls when hot


Your catalytic converter may need replacing. When they're hot the exhaust flow may be obstructive causing back pressure making the engine to sputter and stall.

Oct 06, 2012 | 2000 Buick LeSabre

1 Answer

Lawn mower stalls when engine is hot


first thing is to check that plug is not fowling up when hot due to motor burning to much oil.

Jul 25, 2009 | Garden

1 Answer

98 escort stalling when its hot out side


These re known for head gasket failures when at operating temp. should do a compression check hot and cold.

Jul 20, 2009 | 1993 Ford Escort 4 Door

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