96 Trooper 3.2l. It starts right up in the morning or within 15 minutes after being turned off but if I come back and try to start it after 1 hour it cranks and cranks and then reluctantly fires up.. I...
so the engine run perfectly other wise (other shoe drops to floor?)
slightly old post... but many have this issue.
well you posted with out country, In usa or canada.?
the 3.2L in USA has OBD2 technology, and 1998 in canada.
and as such. the scan tool answers this.
posting only for USA spec,cars, on this USA forum....
first off , engine only run right if engine is good.
compression good on all cylinders, at spec.
intake vacuum good, and stated. running.when running.
so if the engines ok and the EGR valve not stuck open
the EFI system can actually work
so why did you skip using a cheap scan tool? while it didnt start
if the crank or cam sensors fail the PCM tells you , hey buddy they are bad. even 1 misfire in 10, it does. cranking for 5 full seconds.
is scan tool dead, well that is a blown ECU fuse.... or blow fuse to
pin 16 of the OBD2 DLC dash connector (scan tool port)
here are some free tests. zero tools. (almost)
1: does it start with right foot planted, wide open throttle to clear the flooding? "op guide covers this"
2: are the spark tips soaked in raw fuel? yup flooding. or lost spark
3: dry plugs, try test fuel now, Hand sprayed.? if it sounds perfect now, then its not bad spark or bad engine all in 5 min work and spark plug wrench,.
4: all new spark parts, or just plugs? we cant guess this.....
5:does it start with 5-10% throttle added. (to hide a stuck closed IAC valve, and stop the air starvation" such and easy test huh>?
6: ok test fuel always works and engine never floods.
so what is next, well, that is FUELING.
there are over 10 tests with $20guage to find this. but ill do just the 1st to wet your whistle.
A:; fuel pressure. is it at spec.? cranking or running.?
96- 3.2L V6 ,
ever consider a fuel filter? that be like first thing every 60k to consider by the book.
41-46 PSI fuel pressure is the fuel spec.
if too high it floods,
if too low it staves for fuel.
the gauge is $20 to use.
is this a MPI engine
is it with or with out distributor. if yes, has, is cap and rotor and wires fresh.?
our 3.2 has coil packs, or COPS
if the boots are carbon tracked, it will never run right. buy new boots.
other points, there are over 50 causes....
if only one spark plug floods, then the spark is dead on that coil
(COP coil) or the injector leaks or compression is flat here.
our 3.2 has 6 COP coils.
and driver module called and ignitor module that drives the 6 cops
the ECU drives the ignitor.
so not scanning the pCM looking for P03xx errors. you miss the boat.
Feb 22, 2015 |
1996 Isuzu Trooper