Medium and Heavy Trucks

Have truck repair questions? Ask an Expert

Connect one-on-one with {0} who will answer your question

Related Medium and Heavy Trucks Questions
I have many codes that are up onthe screen. Code 102 fmi 18
Hi.. I have many codes that are up onthe screen. Code 102 fmi 18 code 1209 fmi 2. Spn 77 fmi 3 spn 1387 fmi 3. … read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
4,737 satisfied customers
Mx 13 engine derates with no fault codes. 2016 Peterbilt 579
Mx 13 engine derates with no fault codes JA: What is the complete model and serial number of your machine? Customer: 2016 Peterbilt 579 ***************** JA: Are you fixing this yourself? What have yo… read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
4,737 satisfied customers
I have a 1996 peterbilt 379 with a rebuilt N14's celect
I have a 1996 peterbilt 379 with a rebuilt N14's celect Cummins. It will not do a diagnostic code check and will not show codes on instrument panel on the dash. Last week I was experiencing no throttl… read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
4,737 satisfied customers
We have a older GM white Volvo semi with a big Cummins in it
We have a older GM white Volvo semi with a big Cummins in it we have spent a fortune on this engine just ran it 6000 miles ran perfect driving from Oregon to Arizona driving fine and also in complete … read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
4,737 satisfied customers
I am showing code 0221 on an n14 cummins celect plus any
I am showing code 0221 on an n14 cummins celect plus any suggestions? … read more
Andy
Andy
truck /coach technician
Vocational, Technical or Trade School
207 satisfied customers
I have a 98 n14 select plus. Cummins replaced the fuel pump
I have a 98 n14 select plus. Cummins replaced the fuel pump about 3 months ago. Every since then it has been sputtering especially when under a load. The other day it just completely stalled on me. I … read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
4,737 satisfied customers
We have a cummins n14 here and the unit runs great but does
we have a cummins n14 here and the unit runs great but does not start unless hit with starting fluid and starts and runs doesnt sound like it has air in the system just fires right up customer has put… read more
Dorian Conley
Dorian Conley
Heavy Duty Diesel Engine Technician
Vocational, Technical or Trade School
I am showing code 0322 on an N14. speed derate to 1400 to
I am showing code 0322 on an N14. speed derate to 1400 to 1600 current to injector is shut off, just replaced the ecm. checked all plugs and wires and found oil sensor was bad, replaced it and still h… read more
cumminsdr
cumminsdr
Mechanic
High School or GED
1,700 satisfied customers
Fuel is being derated due to boost pressure check air
fuel is being derated due to boost pressure check air intake … read more
Alex Olsen
Alex Olsen
auto/diesel/industrial
524 satisfied customers
I have a n14 Cummins with code 123 low voltage to intake
I have a n14 Cummins with code 123 low voltage to intake manifold pressure sensor and engine is drating what could be problem… read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
4,737 satisfied customers
2003 Volvo 660. Cummins N14. Truck hesitates and stutters
2003 Volvo 660. Cummins N14. Truck hesitates and stutters really bad upon any load at all. It's somewhat intermittent as to how long or how violent but it consistently does it. It smoothes out after a… read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
4,737 satisfied customers
Working on a 1996 Peterbilt with a 855 series Cummins,
Working on a 1996 Peterbilt with a 855 series Cummins, engine serial#11784805. Truck has extremely long crank before starting, up to 15 seconds. When it does fire it is instantly smooth, does not act … read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
4,737 satisfied customers
freightliner fl80: we have a 1999 fl80 with a 45831397 cummins
we have a 1999 fl80 with a 45831397 cummins with a 8.3 caps injection pump - we have 18psi to the pump - 175 psi at the test port on the pump and able to only get 10 lbs of boost- we pinched the line … read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
4,737 satisfied customers
Dr. Cummins, I have an '01 Freightliner Classic XL w/Cummins
Dr. Cummins, I have an '01 Freightliner Classic XL w/Cummins N14 500 Celect+. ESN# ***** This morning the amber check light came on and noticed the motor has gone into derate. The only fault code is 1… read more
cumminsdr
cumminsdr
Mechanic
High School or GED
1,700 satisfied customers
Cummins N14 Celect plus .Missing and lost of horse power
Cummins N14 Celect plus .Missing and lost of horse power ..Problem started with white smoke and number 6 injector receives signal but doesn't return it fault code 325 I paid a guy to hook computer up … read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
4,737 satisfied customers
I have a 2000 fl 70 with a 8.3 cummins in it and the engine
I have a 2000 fl 70 with a 8.3 cummins in it and the engine light is on most of the time but goes out every once in a while . the flash code is 4-3-3 what would that be… read more
cumminsdr
cumminsdr
Mechanic
High School or GED
1,700 satisfied customers
2002 freightliner with cummins ISB 245. have an active code
2002 freightliner with cummins ISB 245. have an active code for 5V supply voltage to ECM. all the sensors that run off of the 5 V supply are fine and throwing no codes for them. engine is derating and… read more
Andy
Andy
truck /coach technician
Vocational, Technical or Trade School
207 satisfied customers
RE Cummins N14 Select Plus 1997 Mod in a 97 International
RE Cummins N14 Select Plus 1997 Mod in a 97 International Truck Set at 525 @1350 and 1850 TQ I have a couple of issue which may well be related Engine revs up on occasion when started to around 1500rp… read more
spankyjr1
spankyjr1
Retired
Vocational, Technical or Trade Scho
420 satisfied customers
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.

JustAnswer in the News:

Ask-a-doc Web sites: If you've got a quick question, you can try to get an answer from sites that say they have various specialists on hand to give quick answers... Justanswer.com.
JustAnswer.com...has seen a spike since October in legal questions from readers about layoffs, unemployment and severance.
Web sites like justanswer.com/legal
...leave nothing to chance.
Traffic on JustAnswer rose 14 percent...and had nearly 400,000 page views in 30 days...inquiries related to stress, high blood pressure, drinking and heart pain jumped 33 percent.
Tory Johnson, GMA Workplace Contributor, discusses work-from-home jobs, such as JustAnswer in which verified Experts answer people’s questions.
I will tell you that...the things you have to go through to be an Expert are quite rigorous.

What Customers are Saying:

Wonderful service, prompt, efficient, and accurate. Couldn't have asked for more. I cannot thank you enough for your help.

Mary C.Freshfield, Liverpool, UK

This expert is wonderful. They truly know what they are talking about, and they actually care about you. They really helped put my nerves at ease. Thank you so much!!!!

AlexLos Angeles, CA

Thank you for all your help. It is nice to know that this service is here for people like myself, who need answers fast and are not sure who to consult.

GPHesperia, CA

I couldn't be more satisfied! This is the site I will always come to when I need a second opinion.

JustinKernersville, NC

Just let me say that this encounter has been entirely professional and most helpful. I liked that I could ask additional questions and get answered in a very short turn around.

EstherWoodstock, NY

Thank you so much for taking your time and knowledge to support my concerns. Not only did you answer my questions, you even took it a step further with replying with more pertinent information I needed to know.

RobinElkton, Maryland

He answered my question promptly and gave me accurate, detailed information. If all of your experts are half as good, you have a great thing going here.

DianeDallas, TX

< Previous | Next >

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

< Previous | Next >

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.

Show MoreShow Less

Ask Your Question

x