Question about Gates 2000 Isuzu NPR-HD Belt Tensioner

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200 isuzu npr glow just flashing dont stay on truck hard to start

Test all the plug they are good cant find the relay location

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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

2000 Isuzu npr has no 12v to heater relay in order to apply voltage to heater system. where does this 12v come from ?


accessories fuse check this.
check heater switch - see if 12v at heater switch
Check if 12v applied to relay coil to switch it

Nov 27, 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

We I just put new glow plugs in our Isuzu 3.1 turbo diesel.but it still hard to start in the mornings can you please let know how to check if there working . thanks A J.


we use an ammeter to make sure the glow plugs work
and 12vdc to each. both tests. pass they are good.
i bet not.
ever use a meter before?
no year car, so cant even guess is car is mech, injector or
EFI direct injected nor if car has scan codes.
no country stated either as diesel setups vary by,
drum rolllllllll
Country

Aug 12, 2015 | Isuzu Cars & Trucks

1 Answer

Does anyone know where the main fuse box is located in a isuzu npr diesel truck not sure of the make I'm estimating somewhere in the 1990s


what fails?
what country?
what exact engine? boxes vary by engines, fuel systems , spark and EFI used in that country.
what exact body, NPR something.npr 200, 300 ,400,500
http://en.wikipedia.org/wiki/Isuzu_Commercial_Truck_of_America,_Inc.#1991
or if not in USA this....
http://en.wikipedia.org/wiki/Isuzu_Elf#Sixth_generation

is it gas or diesel>? CNG? 300.

what year.? surely it has a VIN, and that has YEAR.
the books are ALL made for one year. (accurate.....!)
and if you cant know that, how can anyone look it up for you.?
this is a USA forum and our books don't match yours. (if not usa)
and if we look it up in alldata.com, it will be USA answers.
see>?
and you cant find a fuse box in under 5min works , under dash and hood.? i find that hard to believe..... ? but answers above will help 100x better.
LIKE:
dash under, kick panels, behind glove box. ? (covers that hide them)
then under hood how can a fuse box hide ,its in plain site if there.

Apr 18, 2015 | Isuzu Cars & Trucks

1 Answer

2007 ISUZU KB240 GLOW PLUG TIMER LOCATION?


kb240 dont use diesel glow plug timers is meant for diesel car

Dec 01, 2014 | Isuzu Cars & Trucks

1 Answer

7.3 Liter Diesel starts hard in morning, ok if not left more than 8 hours. How to check the Glow Plugs?


Your glow plug relay is located on the top of the engine on the right side toward the front. Some models there are 2 solenoids. A large one toward the front and a smaller one right behind it. The glow plug relay is the smaller one toward the rear. The larger front one is the intkae heater relay. To test the glow plug relay turn engine to on. dont start it. both of the large terminals should have power with key on. then turn engine off. only one large terminal should have power. If when you turn engine to on you only have power on one side then go to this test. Turn engine on and test smaller wire. it should have power. If it does replace the relay. If the smaller wire does not have power you have an ignition problem or power (wiring) problem to the relay. Also note the engine needs to be cold. If temp of engine is over 130 the computer will not turn the glow plug circut on! Most of th time this is what fails and not your glow plugs.

Oct 27, 2010 | 1996 Ford F350 Crew Cab

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