Does 1999 isuzu rodeo have a no crank security sytem ?
gas engine? sure.
no crank security system.
my guess is you mean the car has and Immobilizer option on car?
most cut fuel.
all have a light, if the lamp is not there, you dont have it.
key on, the cluster lamps tell you if it has IMMOBLIZER ACTIVE.
meaning .
so if the lamp is not there, or is not flashing or glowing cranking
then that is not the ISSUE !
sure we look first...
then we.......
1: check for spark. got spark to all cylinders
yes, if not scan the pCM cranking, it will tell you what spark is gone, 90%
2: yes spark is good, now i check spark timing with 20 buck light.
its way off, the cam belt slipped, FACT.
yes timing is ok.
3: all engine , not blown up overheated , all perfect for 3seconds on test fuel (you do that with spray) does it? if not sounds bad, it is.
if it goes, verrrooooomm stall, its GOOD>
repeat over and over, until happy, see engine and spark is good.
4: ok test fuel tests PASS muster.....
so that leaves what, fueling.
a: too much is called flooding, use WOT cranking to clear floods.
wot means wide open throttle or as ,truckers call it pedal to dah metal..
this cuts all fueling to clear flooding on all EFI engines.
b: no fueling, the spark tips are dry.?
check pump pressure after scanning PCM.
the ECU cuts fuel for 3 reasons. (pure logic)
a: Tps stuck WOT.
b: lost spark (ignitor or tacho dead)
c: lost CMP or CkP sensors (cam, or crank)
the ECU reports a and b, and not c. as c is a FEATURE not an error.