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Glow lights flashing on 02 isuzu npr 300 no start

No trigger supply to the start control soloniod on the injector pump rack but has the holding charge (5v) check fuses most dash globes were missing fitted glow warning light to find it flashing indicating a fault checked reistance on soloniod, checks out ok earth ok check contnuity of trigger supply (white) and module ok as is holding charge wire(red) no odometer

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  • Isuzu Master
  • 22,095 Answers

Not sure here but its a 2002 so iam assuming its a common rail diesel engine and without my head under the bonnet its difficult to say what the problem is ,i think though that you will need the dealer software to know what is happening as i suspect a fault with the ECU but as stated need head under the bonnet to be sure

Posted on Feb 15, 2012

  • j tuppin Feb 27, 2012

    It has a zexel inline pump that's been overhauled and new injectors ... Had to replace the nozzles on the new ones as one was gassing it does start but has fuel starve symptoms fuel lines replaced, pick up blown through lift pump re- kitted. slow to pick up revs almost like it's in limp mode.
    It was parked up for 6 months so I have removed the exhaust just in case it was blocked : s it's got me beat ? Turbos ok timings correct when running it doesn't smoke.

  • Colin Stickland
    Colin Stickland Feb 27, 2012

    right it sounds like an old model although its a newer year for registration so if this is the case and the glow plug lights relay is flashing then either ignore it as they can and often do this for some reason only known to the man that designed the circuit and the chips used in the unit but what i would try here first is to remove the cut of solonoid in the injector pump ,now to get to it i think you wilkl have to remove some sort of shroud around it with a maybe a electronic gizmo that is to to imobilse it without the chipped key so cut this away and then take it out and make sure that the rubber bit on the end of the weighty bit thats lifted up by the solonoid as these rubber can and do sort of perish and fall out and block the hole up ,if this is all ok then run a wire from ignition switch direct to this solonoid ,sound difficult but to a man of your capabilities this is not a problem ,but this i think is your problem either the immobilisor playing up or the solonoid rubber seal at the bottom .Have a look and see what you find

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Posted on Jan 02, 2017

Shorty1_wt
  • 324 Answers

SOURCE: isuzu npr 5.7 gas not starting on its own

sounds like its time to replace the fuel pump.

Posted on Feb 05, 2010

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I have a 02 / 00 isuzu npr 300 truck Vin JAANPR71LX7102025 I would like to know the engine number an where it is located


in usa engine code is 8th digit.
on cars.
but this i no car is it. its a heavy truck posted to cars
this is not a heavy truck forum not in the wildest dreams.

the service manual , real show this, in 1st chapter or 1st page of engine chapters, says now to id and engine, and read codes.
engine serials and vin.
engine code 1.? wild guess.
sorry cant decode NPR, others here might.

Mar 29, 2017 | Isuzu Cars & Trucks

1 Answer

How does a isuzu 250 freeighter get power on the dieselpump and injectors and trough witch fuse does it work


does it run? no symptoms stated just a hunt.
no year car(heavy truck)???

no country
why?
Freighter,
NPR or what? lots of trucks under Freighter,banner.
the 3L diesel
4JJ1-TC
direct injection type? correct? (and PCM to run it)
scan it after checking fuses?

we'd not spend all day looking free books
we see all fuse if they look bad,THEY ARE
if look good, test them , they can bad.
a voltmeter check is super fast.(key on)
if pump has power,why look for fuse.
filters clean
fuel lines primed.
if lift pump is it working?
scan the pcm for errors.
glow plugs ok.

Feb 24, 2017 | Isuzu Cars & Trucks

1 Answer

2004 isuzu 3liter diesel starts cold drive 3 miles stop try to restart engine management light comes on and engine turn over for ages before starting. runs with light displayed


no car stated? some huge NPR truck, What?
no country
why>?
we cant guess lights,ever, we in USA forum are 100% blind.
guess you lost the operators guide book,, oops, fail.

glow plugs bad. (by all means)
filters packed.
start ok with starting fluid spray easy???????

Feb 18, 2017 | Isuzu Cars & Trucks

2 Answers

Need a wiring diagram for 2006 isuzu npr 300 stereo so i can fit a new stereo


youd need the NPR heavy truck, FSM book page on radio wiring
buy book at any Isuzu heavy truck dealer.
we dont now what radio option cam on that NPR
nor what country , other countries use different radios.
so..... this is USA forum, and we dont have NPR books.

Jun 09, 2016 | Isuzu Cars & Trucks

1 Answer

My 2002 isuzu npr diesel f14 ign/ecu fuse blows about 20 seconds after starting. The glow plugs are on the circuit. It's not a direct short to ground. I'm can't find the right wiring schematic.


first off
no country stated
the books are indexed by
country
year 2002
isuzu NPR heavy truck
ask Isuzu for matching FSM book at your dealer.>
factory service manual.

shorts
remove all loads on the feed F14.
then add them 1 by 1 until it blows. bingo. last add is shorted
id bet ecu and glows are not same feed
glows suck huge current
ecu, nill

join a read isuzu forum
or heavy truck?

Feb 01, 2016 | Isuzu Cars & Trucks

1 Answer

No fuel pressure coming out the injectors of my 1999 isuzu npr diesel truck


fuel pump shot or fuel injectors plugged also check for loose wiring by your tank or by the injectors

Jul 14, 2014 | 1999 Isuzu Trooper

1 Answer

NPR 300. Why did unladen light on I/P start flashing?


ask Isuzu yet. or read the operators guide (rare here if at all)
we can do light trucks here, but never heavy.

Apr 13, 2014 | Isuzu Cars & Trucks

1 Answer

02 isuzu trooper


Need a bit more information to go on as there is no injector pump on a 4JX1 its a rail type engine .
You can get flash codes to come up on the engine check light from the OBDII socket by connecting pin 4 to pin 6 and turning the key to ign on . the light will flash - count the flashes gonna be something like 4 then 3 and maybe some other depends on how many faults you got.

If you get none then try my tips .

Dec 22, 2009 | 2002 Isuzu Trooper

1 Answer

Where can I find the schematics for a 1995 Ford F250 7 3 liter turbo diesel? We're able to start the truck on ether, but she won't continue to run. We're guessing it's the fuel pump, possibly the filter or...


drain water from filter. change filter. prime system.
If it doesn't fix it, check glow plugs to be sure they are preheating combustion chamber.

Fuel Supply System The fuel system consists of the following three major subsystems:
  • Fuel supply system
  • Injection control pressure system
  • Fuel injector assembly
The fuel transfer pump is a camshaft-driven, two-stage diaphragm/piston pump mounted in the engine "V".
Fuel is drawn from the fuel tank through the primary filter by the diaphragm section of the transfer pump. Pressurized fuel (approximately 28 kPa [ 4 psi]) is supplied to the secondary filter and returned to the second stage of the transfer pump. The piston-actuated second stage of the transfer pump supplies 276-345 kPa (40-50 psi) of fuel to the rear of each cylinder head where it flows to a fuel rail machined in each head.
Drillings in the cylinder head route the fuel to the plunger area of the fuel injector which can pressurize the fuel to 124,110 kPa (18,000 psi) for delivery to the combustion chamber via a conventional nozzle/valve tip arrangement.
Return fuel is plumbed from fittings at the front of each cylinder head to a junction block which contains a piston/spring type regulator valve that maintains pressure to approximately 414 kPa (60 psi). A de-aeration bleed orifice between the fuel filter and the regulator block vents air trapped in the fuel filter. Most of the fuel from the regulator is recirculated to the inlet of the piston (high pressure) stage of the transfer pump. Fuel return to the tank is limited to 30-38 liters (8-10 gallons) an hour through the use of a 0.0008mm (.020-inch) orifice. This prevents the fuel from overheating in the tank.
---------------------------------------
Injector Driver Module The injector driver module (IDM) is used in conjunction with the PCM to sequentially control power to the fuel injectors on the 7.3L DI turbo diesel engine. The PCM processor generates two digital control signals for the IDM: fuel delivery control signal (FDCS) and cylinder identification (CID). The FDCS signal is used by the IDM to control injection timing and injection duration. The CID provides synchronization to the engine's first and fifth injector (firing order). The IDM verifies that FDCS and CID occur at valid timing intervals. The IDM outputs an electronic feedback (EF) signal, to the PCM, which is a delayed mimic of the FDCS for verification. Selected diagnostic information is also passed to the PCM via the EF signal in run mode.
The IDM is a high-energy power supply which acts as an energy distributor to provide regulated injector energy and control to the unit fuel injectors, based on FDCS and CID commands from the PCM. All IDM components are solid state; there are no user serviceable parts or adjustments. The IDM internal power supply uses a DC-to-DC converter to boost the supply voltage (VBATT) up to 115V DC. This supply is required to overcome the initial impedance of the injectors, ensuring rapid turn on. There are two high side drivers, one for each bank (left and right cylinder bank), and eight low side drivers, one for each injector. One high and one low side must be turned on to energize an injector. Once synchronized with the PCM, the IDM will select the proper low side driver (enable) and control the corresponding high side driver to regulate the current to an injector.
Continuous and on-demand system diagnostic information is provided between the PCM processor and the IDM via the EF signal. During normal operation, the IDM can indicate to the PCM that an injector low side short to ground has been detected, or that the IDM has lost synchronization.
The IDM constantly performs self-diagnostics and also monitors the injector circuits for electrical faults. Any fault codes set are transmitted via the EF signal to the PCM during Key On/Engine Off On-Demand Self Test. If the PCM is unable to obtain diagnostic information from the IDM, DTC 1668 is set.
---------------------------------------------
Glow Plug Control Glow plugs are used to warm the cylinders to improve cold-engine starting. The PCM uses the engine oil temperature (EOT) sensor and barometric pressure (BARO) sensor to determine how long the glow plugs will be on. The PCM energizes the glow plugs longer if the engine is very cold or if the barometric pressure is low at high altitudes.
The PCM controls the relay that supplies power to the glow plugs with the glow plug control (GPC) signal. When the GPC signal is grounded by the PCM the relay closes, turning the glow plugs on.
The glow plugs are controlled by the following sequence:
  1. PCM energizes the glow plugs.
  1. The PCM energizes the glow plugs immediately after the ignition is placed in the ON position.
  1. The PCM then determines how long glow plugs will be on based on EOT sensor and the BARO sensor. The required time to warm up the cylinder decreases the engine oil temperature and barometric pressure increases at low altitudes.
  2. ------------------------------------------------------
Glow Plug Lamp Control The glow plug lamp (GPL) signal controls the WAIT TO START light located on the instrument panel. This light is used to indicate when to start the engine. The cylinders are being warmed by the glow plugs during and after this light is lit. The PCM energizes the glow plug lamp longer if the engine is very cold or if the barometric pressure is low.
When the GPL signal is brought low, the "Wait to Start" lamp is turned on.
The glow plug lamp is controlled by the following sequence:
  1. PCM lights the WAIT TO START light after a key on reset occurs.
The PCM determines the glow plug lamp activation time based on engine oil temperature, barometric pressure and battery voltage.
  1. PCM turns off the WAIT TO START light.
The glow plug lamp is turned off when the timer counts to the number of seconds specified by the PCM. The glow plugs will normally remain on longer than the "Wait to Start" lamp.

Sep 22, 2009 | 1995 Ford F250

1 Answer

2000 tdi wont start!!!


glow plug relay is marked #180 on the housing.
in 0 to 11 degrees they have a starting prob were the glow plugs go on and off very quickly.need VAG.com to exstend glow plug timing.
to test glow plugs disconeect ect turn key on plugs should draw 15 amps each 60 amps all together.if you dont have amp meter use test light.

Nov 24, 2008 | 2000 Volkswagen Jetta TDI

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