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I have 1999 isuzu rodeolost my key cut new one engine cranking no spark or injector what can i do

Lost spark and no injectors live

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Sounds like the lost ket is a PATS key, and the new cut key, while matching tumblers in the ignition is not coded to the PCM to allow starting. recommend check with dealer, have your registration and VIN# ready, dealer can reproduce a PATS key that should start your vehicle.

DW Mylin

Posted on Nov 27, 2012


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SOURCE: Cranks, no start, no spark -

replace your ignition module. if you need further assistance let me know and i will attempt to find part numbers and diagrams.

Posted on Jan 07, 2010

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check for 12v at injector plug if no 12v this is fed from the ecu so backtrack all fuses and ecu feeds
you may need new ecu control unit but be sure to check all 12v feeds and earths etc

Posted on Jul 01, 2010

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SOURCE: There is no power getting to the injectors in my

Hi there, Joel here 20 year master mechanic. For the faulting to the injector pulse and power, the control mod in the distributor controls fuel and spark. You're going to have to replace the control mod. I believe AutoZone carries these at 26.99 p/n DR126. Hope this helps.

Posted on Oct 28, 2010

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SOURCE: Isuzu 4JX1 EngineWont Start after replacing new injector

my isuzu bighorn will not start after changing valve seals and head gasket and after setting timing it still will not start. do you have a solution.

Posted on Aug 14, 2011

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Is there a reset button on a 1999 isuzu trooper 4x4 it won't start acting as if it's out of gas but isn't already replaced fuel pump 2 mths ago

which engine? i cant guess engines, not today, too early.
what will be, will be..... fate always wins... and entropy.
so that is just 2 simple tests.
12vdc (11v cranking) to the pump , across both its 2 pins?
yes, /no of no work to ECU relay (fuel pump relay)
if the relay shows 12vdc cranking and pump
then we check fuel pressure, next.
but that is all wrong..... what do we really do, as all EFI systems can cut fuel for many reasons, besides that pump.
ill guess its a gasoline engine, and still stock end to end. (blind too)
1: head lights glow bright , key off. and cranks fast on demand.
2: key on, the CEL glows, in cluster, it must or ECU lost power.
3: fuses to ECU and pump good...???? all fuses good.
4: i connect scan tool (any tool works in usa, here) at the 16pin DLC port seen near knees of driver. i get comms now. if not say so.... if no comms now, the ecu is dead.
5: I crank for 5seconds release key and if scans show DTC errors of
P03xx codes, now you know why injection is halted, by design.
all cars do that, if up to 3 things spark wise are bad, the ECU cuts all injectors dead. (prevents crash and burn, as seen on TV by law)
so if all that is OK,?
6:then i look and see if injector 1 passes my NOID light test.
yes, then it is injecting. ECU is....injecting. ok. (did its job)
7: i then check for 12vdc (11v cranking) to the pump, if not?, I trace that wire for its obvious failure or the relay bad.
if you have 12vdc to pump cranking (good)
i check fuel pressure next. using a tool called a fuel pressure gauge that costs $20 (ask)

one could skip to test 6 first. (6 bad, start back at #1)

next time post engine in car.
cylinder count at least and displacement.
the line up, last 2 are diesel...
3.2 L 6VD1 SOHC V6
3.2 L 6VD1 DOHC V6 twin cam.
3.5 L 6VE1 DOHC V6
3.0 L 4JX1 TD I4
3.1 L 4JG2 TD I4

i answered for USA car, and gasoline engine..

Oct 30, 2015 | Isuzu Cars & Trucks

1 Answer

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.

Jun 16, 2015 | 1999 Isuzu Rodeo

1 Answer

2011 swift 1.5 no injector pulse no spark

blown fuse. ; is first, as per always.
2nd is scan it, did you scan it yet? that is always 2nd.
all efi engines, all ECU , all cut injectors for (noid lamp test dead?)
you said pulse,does that mean fuel pulse or electronic pulse to injector coil..... ? all injectors dead. or just 1. same for spark.
toss coin land, noid dead. all noids
loss of. NOID signals.!
1; spark
2: lose of CMP or CKP signals (cam or crank senders)
3: ecu sees wide open throttle it cuts fuel 100%
4: ecu bad, is CEL lamp dead key on? scan it.

Apr 01, 2015 | Suzuki Swift Cars & Trucks

1 Answer

Where is the fuel cut off switch on a 2001 suzuki grand vitara

why not post symptoms and ask a question.???
no engine size stated of the 3.
first off. there is no such switch.!
THE PCM on ALL suzuki's made In usa (ours vary)control the fuel pump and injectors under all conditions, not you, or any switch
it has no inertial switches like FORDs, its not a Ford.

the PUMP (fuel)
is activated cranking, the PCM closes a relay the relay sends 12vdc to the pump cranking ,an when running,
if the engine stalls for any reason the PCM cuts fuel at the injectors
and the PUMP.
that is how it works,
reasons to cut fuel are.
1: not running
2: lost spark
3: lost spark precursors, CMP /CKP senders, (same as lost spark)
4: cuts fuel cranking in the wide open throttle crank mode (super secret unflood mode,)

Feb 11, 2015 | 2001 Suzuki Grand Vitara

1 Answer

When engine cold starts ok, but once hot and you switch off and try starting it again, it will not start, runs well and ticks over well

what engine?, they have options, there. cant fix unknown engines....
G16? J20, J25 engine? all are very diffr. motors.

hot soak failure.
probably not lost engine compression, HLA lifters. no gap
so is lost spark
you check for spark at all cylinders. if all are gone we scan the ECU.
if spark is good then its flooding, spark tips on all cyl, soaking wet
or just 1.????
all the above is $2 in special tools, just a fresh new spark plug
found in tool box..

if spark is dead.
we scan it. (all comments are for USA cars, never others)
we conn. the OBD2 tool ($9) and scan it
1: key on,
2: crank for 5 seconds and see scan tool show RPM from 250 to 300rpm. good. CKP is working bit.
3: we then release key , not off yet
4: i look at live and pending DTC,s oops, P0340/355 or ?
and you look up those DTCs and it says, bad CMP /CKP?

IF spark is good, then its just flooding
if yes, then ask how to do fuel tests.
fueling is last. all else must be right first.
(fuel pressure, then injector balance tests)

Jan 25, 2014 | 1999 Suzuki Vitara

1 Answer

I do not know where fuel injector relay is located

99vit what country, all vits vary by country, not stating country
makes my response and most other wrong, see that?
what engine, there are many. world wide, welcome to www.
All Suz, ecu cut fuel if the ECU thinks, spark is bad
even when spark is 100% good.
did you use a scan tool and pull all DTCs and post them
after cranking for 5 seconds. the ecu does report cranking errors.
let it.
all fuses good.
is fuel pressure at 30psi?
does the NOID lamp check fail at all injectors?

Feb 04, 2013 | 1999 Suzuki Vitara

1 Answer

Check engine sign flashing. i have an auto repair shop and encountered lots of this with isuzu dmax. engine doesn't start. no fuel coming out of the injection pump. please help!!!

first of all check the fuses
check to see if there is any spark, no spark check ignition system
check fuel pressure, no pressure then check fuel pump
if there is pressure and spark then check to see if fuel injectors work
if no spark and no fuel injector check crank sensor, ignitor and wirings

Feb 27, 2010 | 2004 Isuzu Rodeo

1 Answer


Do the spark plugs have spark ? Check then by removing them one by one and connect the plud to the wire. ground the spark plug to metal and watch the end of the spark plug. It should spark. you will need somebody to crank the engine as you watch for spark.

Nov 12, 2008 | 1999 Isuzu Trooper

4 Answers

Isuzu 4JX1 EngineWont Start after replacing new injector

my isuzu bighorn will not start after changing valve seals and head gasket and after setting timing it still will not start. do you have a solution.

Aug 09, 2008 | 1999 Isuzu Trooper

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