Medium and Heavy Trucks

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Related Medium and Heavy Trucks Questions
I just bought the Isuzu npr! Had it about two months it has
I just bought the Isuzu npr! Had it about two months it has never had the power it should have! It gives a transmission code but the last thing that happened was it would not crank like it was out of … read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
4,737 satisfied customers
I have a 2003 isuzu NPR HD 4.8 and I have a no start problem
I have a 2003 isuzu NPR HD 4.8 and I have a no start problem I recently bought it and the company I bought it from ran it as a delivery truck and was having hard start issues last winter we are in Ala… read more
Curtis B.
Curtis B.
Technician
Associate Degree
1,571 satisfied customers
Truck would start and run and drive until you shut it off
truck would start and run and drive until you shut it off and you have to prim hand pump and it runs until you shut it off then you have to re prime has new isuzu seperator on it ran like yhis 3 weeks… read more
Keiphun Sowell
Keiphun Sowell
Owner Brothers Restoration/Troubleshoot
AutoDiesel Technology
1,362 satisfied customers
I HAVE A ISUZU NPR AND IT IS ASKING FOR A REGEN BUT I CAN
I HAVE A ISUZU NPR AND IT IS ASKING FOR A REGEN BUT I CAN GET IT TO REGEN … read more
Jeremy
Jeremy
Certified Truck/Bus Technician
Associate Degree
2,740 satisfied customers
Isuzu npr 4he1. Truck is loosing power after running about a
Isuzu npr 4he1. Truck is loosing power after running about a mile down the road. Like it's running out of fuel. It starts smoking faintly blue and starts slowing down and shaking like a bad skip ultim… read more
Roy Belding
Roy Belding
7,602 satisfied customers
I have a 1999 isuzu npr diesel that started getting weak
i have a 1999 isuzu npr diesel that started getting weak about 3 weeks ago. it will not run over 55 on flat ground. we replaced the fuel filer last week and no change. today it shut off at a stop sign… read more
Mike Mcmillan
Mike Mcmillan
Triage Tech/Shop Foreman
Associates
443 satisfied customers
99 Isuzu NPR with 4he1 diesel. Starts, runs for 2 seconds
99 Isuzu NPR with 4he1 diesel. Starts, runs for 2 seconds and shuts down. Fuel supply is ok. filters new. Lift pump is good. … read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
4,737 satisfied customers
I need some advice or I should say info on a couple of
Hello I need some advice or I should say info on a couple of trucs. It's about a 2007 isuzu npr tow truck, with a 5.2 diesel engine, auto tranny. I'd like to know a little bit about this truck. How re… read more
Jeremy
Jeremy
Certified Truck/Bus Technician
Associate Degree
2,740 satisfied customers
I have a no start on a 99 gas gm 5.7 isuzu truck. no spark
i have a no start on a 99 gas gm 5.7 isuzu truck. no spark and no power to fuel pump. no fuel psi at fuel rail. … read more
Jerry Newton
Jerry Newton
Vocational, Technical or Trade Scho
5,411 satisfied customers
2016 Isuzu NRR jale5w164g7301903 I need the wiring diagram
2016 Isuzu NRR jale5w164g7301903 I need the wiring diagram of the engine and fuel tank and the dash also for 2015 npr jale5w164g7301903 both of them are diesel… read more
Andy
Andy
truck /coach technician
Vocational, Technical or Trade School
210 satisfied customers
I have a 2002 isuzu npr diesel truck i change the engine
hello and good evening i have a 2002 isuzu npr diesel truck i change the engine because the old engine tru a rod, so i replaced the engine. use the truck for 2 weeks but the was some transmission prob… read more
Pete
Pete
Automotive Diagnostic Specialist
General auto certifications
36,058 satisfied customers
We have a 2012 INTERNATIONAL DURASTAR 4300 MAXXFORCE 7 V8
We have a 2012 INTERNATIONAL DURASTAR 4300 MAXXFORCE 7 V8 6.4. Just had the injectors replaced and did an oil change because of fuel leaking into the oil. Truck started and ran great for the first 15 … read more
Alex Olsen
Alex Olsen
auto/diesel/industrial
524 satisfied customers
I have a 2001 International 4700, I purchased in and drove
I have a 2001 International 4700, I purchased in and drove it 6 hours with no problem, got it home painted it, cleaned it, started it up and all of a sudden it shut off as if I had turned it off.. I t… read more
Andy
Andy
truck /coach technician
Vocational, Technical or Trade School
210 satisfied customers
Travel to Caribbean to Fix NPR Fuel Issue - Starts Won't Rev
Travel to Caribbean to Fix NPR Fuel Issue - Starts Won't Rev I'm looking for a certified Master Isuzu NPR technician to travel to St. Croix US Virgin Islands to solve a fuel issue. Vehicle is a 2010 I… read more
Jeremy
Jeremy
Certified Truck/Bus Technician
Associate Degree
2,740 satisfied customers
the truck (2000 isuzu NPR Diesel) started just fine, 300 yards,
the truck (2000 isuzu NPR Diesel) started just fine, 300 yards, the fuel gage dropped to empty and the tuuck started studdering like it was out of fuel, then died. all other gages work, the engin trys… read more
Jeremy
Jeremy
Certified Truck/Bus Technician
Associate Degree
2,740 satisfied customers
Vehicle would not run last week, fuel filters were clogged.
Vehicle would not run last week, fuel filters were clogged. Replaced both, vehicle started and ran fine. Now vehicle will not exceed 50 mph. We can not interface with vehicles ECM and no warning light… read more
Wayne
Wayne
Journeyman
Vocational, Technical or Trade Scho
4,023 satisfied customers
I have an Isuzu diesel box truck that stalled out and would
I have an Isuzu diesel box truck that stalled out and would start back up. I later tried starting it and it started right up and ran with no problem for over an hour. We had experienced the same probl… read more
spankyjr1
spankyjr1
Journeyman
Vocational, Technical or Trade Scho
2,873 satisfied customers
We have a 2003 Isuzu NPR with the 4 cylinder turbo diesel engine.
We have a 2003 Isuzu NPR with the 4 cylinder turbo diesel engine. The truck has a little less than 100,000 miles on it. The truck is not driven often, and frequently has relatively long periods of bei… read more
Wayne
Wayne
Journeyman
Vocational, Technical or Trade Scho
4,023 satisfied customers
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Meet the Experts:

Daniel Wilson

Daniel Wilson

4,737 satisfied customers

Owner at DJ Wilson

Cat Man

Cat Man

Cat Engine Expert

5,234 satisfied customers

I am ASE Master Truck Certified.

Wayne

Wayne

Journeyman

4,023 satisfied customers

worked on, Gmc, Macks, Freight liner,Mercedes Benz,,Ford, sterling

Jeremy

Jeremy

Certified Truck/Bus Technician

2,740 satisfied customers

ASE Med/HD Truck Technician, NATEF Diesel Engines and Electrical/Electronics Technician, Network Engineer specializing in CAN faults, Aftertertreatment, and vehicle communications

cumminsdr

cumminsdr

Mechanic

1,700 satisfied customers

All types of Cummins applications

Curtis B.

Curtis B.

Technician

1,571 satisfied customers

Technician turned service manager on multiple lines of trucks and engines, used in industry.

Chris (aka-Moose)

Chris (aka-Moose)

Technician

353 satisfied customers

24 years of experience diagnosing & repairing

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Disclaimer: Information in questions, answers, and other posts on this site ("Posts") comes from individual users, not JustAnswer; JustAnswer is not responsible for Posts. Posts are for general information, are not intended to substitute for informed professional advice (medical, legal, veterinary, financial, etc.), or to establish a professional-client relationship. The site and services are provided "as is" with no warranty or representations by JustAnswer regarding the qualifications of Experts. To see what credentials have been verified by a third-party service, please click on the "Verified" symbol in some Experts' profiles. JustAnswer is not intended or designed for EMERGENCY questions which should be directed immediately by telephone or in-person to qualified professionals.

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