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
Keeps shutting down for no reason. 2003 peterbuilt I'm
they changed fuel filter said it was leaking so replaced it … read more
cumminsdr
cumminsdr
Mechanic
High School or GED
1,700 satisfied customers
I ran out of fuel going up steep incline 300 feet from
I ran out of fuel going up steep incline 300 feet from station. Now engine wont start. Took top cap off davco fuel filter filled with fuel. Cleaned top o ring rubbed fuel on top glass and o ring put c… read more
Mike Mcmillan
Mike Mcmillan
Triage Tech/Shop Foreman
Associates
403 satisfied customers
Mitsubishi Fuso... MFG 09/06... VIN *****************...
Mitsubishi Fuso... MFG 09/06... VIN *****************... Engine Model 4M50-3AT8... Truck sure acts like it starving for fuel, there is a block on the left side of the engine where all low pressure fue… read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
4,737 satisfied customers
2007 Peterbilt 335 Cummins 8.3 ISC. SN 46644819...originally
2007 Peterbilt 335 Cummins 8.3 ISC. SN 46644819...originally brought in bc of loss of power & heavy smoke...replaced injectors (all 6), replaced #2 piston & sleeve, machine shop checked heads but no m… read more
cumminsdr
cumminsdr
Mechanic
High School or GED
1,700 satisfied customers
F650 no start. Replaced engine harness, pressure relief
F650 no start. Replaced engine harness, pressure relief valve, cam position valve, banjo bolt, fuel block, removed old fuel, fuel filter, can remove fuel filter and replace and it will start … read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
4,737 satisfied customers
Were is position senson locate on 1995 N.14 peterbuilt. 379
were is position senson locate on 1995 N.14 peterbuilt … read more
Mike Mcmillan
Mike Mcmillan
Triage Tech/Shop Foreman
Associates
403 satisfied customers
I just replaced an ecm on a peterbuilt and the engine will
I just replaced an ecm on a peterbuilt and the engine will not turn over. I just had it reprogrammed today and it still will not fire,I've hooked up every machine I have to it and it's not showing me … read more
Jeremy
Jeremy
Certified Truck/Bus Technician
Associate Degree
2,740 satisfied customers
2005 peterbuilt 379 all dashlights came on engine died
2005 peterbuilt 379 all dashlights came on engine died coasted to stop engine not hot … read more
Andy
Andy
truck /coach technician
Vocational, Technical or Trade School
207 satisfied customers
I have a 2005 peterbilt 335 with a 315 hp cummins isc
I have a 2005 peterbilt 335 with a 315 hp cummins isc "engine serial numnber 45442713 cpl 8820" in it the motor threw a rod and I have a replacement motor from another truck that is the same year but … read more
Alex Olsen
Alex Olsen
auto/diesel/industrial
524 satisfied customers
We have a peterbuilt 330 with a cummins 8.3 in it it has
we have a peterbuilt 330 with a cummins 8.3 in it it has acode of 18 fi 11 for the transient suppressor we replace it and it still has the code any ideals i also have the snapon iq and it will not cle… read more
cumminsdr
cumminsdr
Mechanic
High School or GED
1,700 satisfied customers
I have a 2012 isx 15 in a peterbuilt and it is throwing injector
I have a 2012 isx 15 in a peterbuilt and it is throwing injector spill valve code 1 2 3 5 6 I have paid 2 shops over $1200 to diagnose with no luck. Truck is running great a slight loss of power but n… read more
William Herren
William Herren
A.A.S.
2 satisfied customers
I have a 250 cummins, no turbo, starts and runs good, but
I have a 250 cummins, no turbo, starts and runs good, but start to pull a grade, it runs good but then starts to stagger, won't rev. stop, let it idle a minute, starts out good for a moment then the s… read more
Pete
Pete
Automotive Diagnostic Specialist
General auto certifications
35,328 satisfied customers
Our 2008 peterbuilt 387 isx 485 cummins will start to regen
our 2008 peterbuilt 387 isx 485 cummins will start to regen and then wont finish it just keeps going and won't stop. the high temp light doesn't come on now when it starts and just keeps saying dpf st… read more
Andy
Andy
truck /coach technician
Vocational, Technical or Trade School
207 satisfied customers
Peterbuilt 335: I have a 2006 Peterbuilt wiyh a 8.3 cummins.
I have a 2006 Peterbuilt wiyh a 8.3 cummins. The engine turns over but no start, no fuel. Fuel pickup pump has no power. checked fuses. Have now dicovered no power to the engine on fuse. Why? when jum… read more
Expert
Expert
I am working on a 1989 peterbuilt 379 with ntc 444 enginewith
I am working on a 1989 peterbuilt 379 with ntc 444 enginewith a low flow cooling system, I would like to know how the coolant hoses go some are 1 1/4" some are 1" so a diagram would be helpful. this e… read more
Toby
Toby
Vocational, Technical or Trade Scho
107 satisfied customers
i have a 2004 isc 315 cummins in a dump truck that will barely
i have a 2004 isc 315 cummins in a dump truck that will barely run on a cold morning it runs good for the first couple of miles then it will barely run for an hour or so.i have had it tested it has lo… read more
Wayne
Wayne
Journeyman
Vocational, Technical or Trade Scho
14,730 satisfied customers
I have a 2007 peterbuilt 386 with a Cummins ISX. My fuel milage
I have a 2007 peterbuilt 386 with a Cummins ISX. My fuel milage has droped from six mpg to four mpg. I had Cummins check the engine and they found three bad injector's and R&R same. I have R&R fuel & … read more
cumminsdr
cumminsdr
Mechanic
High School or GED
1,700 satisfied customers
I used to hear a humming sound like a electric fuel pump
hi , i used to hear a humming sound like a electric fuel pump before ignition , now my btruck doesnt hum and doesnt start due to no supply of gas, does the peterbuilt truck have a fuel pump .where do … read more
diesel-tech
diesel-tech
Owner of landrys truck repair llc
136 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

14,730 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