one more anony post, making help hard if you have 2 or more post.
see? why do that?
why guess? why not use a real book on topic
well if any engine stalls, the CEL glows.
the CEL glows for the stall self tests. it glows telling you
the ECU is ok and has 12vdc power.
get the schematic for your car.
and find out why power is lost the EFI system. this is not the nebulas inertia switch,
what does SEEM mean.??? using a voltmeter works, looking and guessing not. use a voltmeter to find where power is lost.
your not stumped,
you dont have a meter
and dont have the book
so log in the alldata.com
btw2: no engine size stated, and guess what.
the schematic for all parts are different. fuel and electric.
if you go on line
the ask,year, make ,model and ENGINE.
can fix any engine, until you know what is there. impossible.
(unless you use BASICS for OTTO Cycle engines)
lets do that. for fun
got spark? no
got CEL ,no
Got power to ECU , no.
so you use the voltmeter to see where power is lost in this power feed system. (its a tree construct)
now a random answer, 6 cylinder engine.
Fuse C8 or F3 blown.
engine, and ECM F3 powers the whole ECU.(PCM)
main relay output wires dead. red/blue wires. killing all spark and fuel.
fuse C10 kills he CEL lamp dead.
is uses a volt meter, (walfart for $10?)
and both sides of these fuses read 12vdc to ground.
if not fuse is blow or input to this box is bad.
the engine bay fuse box runs the whole cab box.
do the head lights work.
are there other things dead , not stated?
one of these fuses or relay is dead.
or the dash lamp fuse blew, yous said they were dead
you key on, the CEL glows power to the PCM is below right.
if the fuse is dead both sides you blew the eng.bay main fuse.
this is the v6, accessory belt tensioner cam is whole other matter. next is the v6, cam tensioner#20 seen on the REAL isuzu site.both have idler pulleys, so next time say what your hands arecam or acessories 
