Medium and Heavy Trucks

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2006 Isuzu NPR diesel no right turn signal bulbs are good
2006 Isuzu NPR diesel no right turn signal bulbs are good fuse is good flashers work and left turn signal works fine no light on the dash either but you can hear it blank and real fast… read more
Andy
Andy
truck /coach technician
Vocational, Technical or Trade School
254 satisfied customers
I have a2007 Isuzu /chevy NPR hd with a no crank problem, I
I have a2007 Isuzu /chevy NPR hd with a no crank problem, I can jump the solenoid and turn it over but it still won't start, as far as I know all fuses r good and I hear a relay clicking when I turn t… read more
Andy
Andy
truck /coach technician
Vocational, Technical or Trade School
254 satisfied customers
I have a brake booster light that comes on while driving,
I have a brake booster light that comes on while driving, 2014 Isuzu npr … read more
Andy
Andy
truck /coach technician
Vocational, Technical or Trade School
254 satisfied customers
2001 Isuzu NPR with a problem. I am not getting any power to
2001 Isuzu NPR with a problem. I am not getting any power to the ignition coil. I am getting a ground signal but no power in the wiring harness. I think it could possibly be a bad wiring harness or a … read more
Alex Olsen
Alex Olsen
auto/diesel/industrial
490 satisfied customers
Isuzu npr indicator lights on the dash. Thing is when i
yes okay thing is when i always turn eginition key on i here the buzzy this time nothing … read more
Alex Olsen
Alex Olsen
auto/diesel/industrial
490 satisfied customers
I have an Isuzu npr and the glow plug light flashes .Also I
Hi I have an Isuzu npr and the glow plug light flashes .Also I need to know were the glow plug fuse is and also were the DLC is? … read more
William Herren
William Herren
A.A.S.
2 satisfied customers
GOT ISUZU 02 N8 NPR STOP MOTOR UNIT NOT WORKING FITTED NEW
GOT ISUZU 02 N8 NPR STOP MOTOR UNIT NOT WORKING FITTED NEW STOP MOTOR STILL NOT WORKING CHECK ALL FUSES( DOES IT GO TO A TIMER RELAY) UNIT FOR IT TO TURN OFF AND ON.I CAN MAKE IT WORK BY BRIDGE IT OUT… read more
Andy
Andy
truck /coach technician
Vocational, Technical or Trade School
254 satisfied customers
Isuzu NPR: , I'm Bill, I have a 2006 Isuzu NPR Diesel. Was
Hi, I'm Bill, I have a 2006 Isuzu NPR Diesel. Was driving on highway on cruise control about 68mph. it's sweetspot on road. going up a hill the engine dropped rpm. didn't die but would not rev over 21… read more
Jeremy
Jeremy
Certified Truck/Bus Technician
Associate Degree
2,243 satisfied customers
This vehicle will not accelerate over 30 mph, check engine
This vehicle will not accelerate over 30 mph, check engine light is on (we can not check codes) , how do you perform a force regen on this vehicle? is there any way to pull codes with a snap on verus?… read more
Wayne
Wayne
Journeyman
Vocational, Technical or Trade Scho
11,694 satisfied customers
Isuzu medium-duty 4500 series NPR: I have a 1989 Isuzu medium-duty
I have a 1989 Isuzu medium-duty 4500 series NPR box truck with a four cylinder diesel turbo motor I was driving it two days ago and all the power went out of the fuse box the motor did not shut off an… read more
spankyjr1
spankyjr1
Retired
Vocational, Technical or Trade Scho
697 satisfied customers
2005 isuzu NPR 6.0 gas engine. Two things : sometimes it will
2005 isuzu NPR 6.0 gas engine. Two things : sometimes it will not shut off when key is turned off and sometimes I have no gas pedal response when running. Please help… read more
Wayne
Wayne
Journeyman
Vocational, Technical or Trade Scho
11,694 satisfied customers
2001 Isuzu NPR V.I.N. 17006703 Engine 4HE1-XS Diesel 6 Cyl
2001 Isuzu NPR V.I.N. 17006703 Engine 4HE1-XS Diesel 6 Cyl 4.75 Liter 313,884 Miles Throttle pedal stiff, truck fuel pedal stcks and causes truck to accelerate out of control. Truck has to be put into… read more
Dieselman36
Dieselman36
High School or GED
Isuzu NPR: My running lights on my 2006 isuzu npr dont work.
My running lights on my 2006 isuzu npr don't work. I sometimes hear buzzing from the relay or fuse area in the middle of the dashboard… read more
Toby
Toby
Vocational, Technical or Trade Scho
107 satisfied customers
1995 isuzu npr 3.9 diesel I am getting a hard brake pedal
1995 isuzu npr 3.9 diesel I am getting a hard brake pedal and then sometimes spongy. Rear brake shoes, wheel cylinders, and drums are new. The Vacuum light turns on every morning and through out the d… read more
Toby
Toby
Vocational, Technical or Trade Scho
107 satisfied customers
We have a 1995 isuzu npr that the battery and vacuum light
We have a 1995 isuzu npr that the battery and vacuum light wont go off and horn wont blow. the alternator is good. what could it be?… read more
spankyjr1
spankyjr1
Retired
Vocational, Technical or Trade Scho
697 satisfied customers
have a 2007 isuzu npr diesel.low coolent light comes on /shut
have a 2007 isuzu npr diesel.low coolent light comes on /shut engine down comes on. checked coolent level /good.took off radiater cap to make sure it was full/good....replaced low coolent sensor/still… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
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isuzu npr: I have a isuzu npr 2000. We put a new motor in it
I have a isuzu npr 2000. We put a new motor in it and it runs smooth down the road but has almost no tork when you start off or if your on a driveway with a little hill and stop half way up it when yo… read more
Danielle-Moderator
Danielle-Moderator
5 satisfied customers
Isuzu npr hd 4cyl diesel,exhaust brake doesnt seem to be helping
Isuzu npr hd 4cyl diesel,exhaust brake doesn't seem to be helping the brake system,the exhaust brake is open and then closes when foot is off accelerator,i hear the valve working and the exhaust press… read more
diesel-tech
diesel-tech
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136 satisfied customers
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