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 a 2006 Peterbilt with a C15 CAT engine in it and
Hello, I have a 2006 Peterbilt with a C15 CAT engine in it and having issues with cruise cutting out.… read more
Nich1019
Nich1019
Diesel Technician
Vocational, Technical or Trade School
78 satisfied customers
Jake brake stopped working on our 2002 Peterbilt 379. It's
Jake brake stopped working on our 2002 Peterbilt 379 … read more
Nich1019
Nich1019
Diesel Technician
Vocational, Technical or Trade School
78 satisfied customers
Can I speak with a diese mechanic? When I type my problem
Can I speak with a diese mechanic? When I type my problem all out it's all for nothing because no one ever answers it. I have a 1997 Peterbilt 379 and I'm having problems with my cruise control… read more
TomcM28
TomcM28
Owner
Associates
14 satisfied customers
Cruise will not work. 05 peterbilt 379 cat accert c 15.
Cruise will not work JA: What's the make/model/year of your truck? Engine type? Customer: 05 peterbilt 379 cat accert c 15 JA: Are you fixing your truck yourself? What have you tried so far? Customer:… read more
Nich1019
Nich1019
Diesel Technician
Vocational, Technical or Trade School
78 satisfied customers
No cruise on 2005 peterbilt with c15, have et, cruise on/off
no cruise on 2005 peterbilt with c15, have et, cruise on/off works, clutch and brake switch both show off, but on et where it says cruise mode, it says not activated… read more
Nich1019
Nich1019
Diesel Technician
Vocational, Technical or Trade School
78 satisfied customers
Hellow so i randomly got a flashing check engine light i
hellow so i randomly got a flashing check engine light i have a 2006 peterbilt 387 with 1,00,087 miles on it c15 eaton fuller 13 speed … read more
Nich1019
Nich1019
Diesel Technician
Vocational, Technical or Trade School
78 satisfied customers
2003 peterbilt 378 vin 1CP-FDBOX-6-4D808339 cat C 15 MBN
2003 peterbilt 378 vin 1CP-FDBOX-6-4D808339 cat C 15 MBN jakes,cruise control quit working I'm looking for the inputs to J2 from cab switches test good & controlling ground I would like pin numbers at… read more
Nich1019
Nich1019
Diesel Technician
Vocational, Technical or Trade School
78 satisfied customers
I need injector trim files for a C15 cat. 2009 Peterbilt
yes, I am fixing my myself. I just need the injector trim code files. I have the trim codes from the injectors … read more
Nich1019
Nich1019
Diesel Technician
Vocational, Technical or Trade School
78 satisfied customers
C15 code flashes 55 which I know it means no fault
C15 code flashes 55 which I know it means no fault codes..how do I get it to stop flashing..also when its flashing and set cruise. it will lock on speed and immediately start to accelerate...just as i… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
5,353 satisfied customers
We have a C15 Acert in a 2005 Peterbilt 378. The jake brake
We have a C15 Acert in a 2005 Peterbilt 378. The jake brake only works on low and before that it was working in every position but started cutting out. Now it is only giving us low and there is no pow… read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
6,062 satisfied customers
2004 Cat C15 in a Peterbilt 378, VIN. 1NPFXBEX34D830549.
2004 Cat C15 in a Peterbilt 378, VIN. 1NPFXBEX34D830549. Jake brake is not working. Checking for voltage at the power supply to the Jake on off switch with a power probe, key on engine off, it shows 1… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
5,353 satisfied customers
I have a 97 Peterbilt 378. I had some welding done in the
I have a 97 Peterbilt 378. I had some welding done in the frame yesterday and the truck ran fine today. While driving today, I noticed my engine brake would only work when I pressed the brake pedal, a… read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
6,062 satisfied customers
Got a 06 Peterbilt 387 Pacer motor the dash lights blink on
Got a 06 Peterbilt 387 Pacer motor the dash lights blink on and off like it's in limp mode … read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
5,353 satisfied customers
On a 2005 387 peterbilt C15 cat i lost jake brakes
On a 2005 387 peterbilt C15 cat i lost jake brakes and cruise Do you have a wiring diagram of this circuit?… read more
Wayne
Wayne
Journeyman
Vocational, Technical or Trade Scho
17,938 satisfied customers
What does the fault code 231-12 mean on my C15 cat engine? My speedometer is going ba
Hi. What does the fault code 231-12 mean on my C15 cat engine? My speedometer is going back and forth like crazy.when I have my cruise set it speeds up and slows down .… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
5,353 satisfied customers
I have a 2009 peterbilt model 378, with a c-13 LEE18461, I
I have a 2009 peterbilt model 378, with a c-13 LEE18461, I have power on pins 52, 53, and 70, and ground on 65 and 67. I ordered a new ECM, installed the reman, and I continue to get a j1939 code on t… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
5,353 satisfied customers
I have a 2006 peterbilt 378 with c15 engine, my question is
I have a 2006 peterbilt 378 with c15 engine, my question is when I'm driving my truck at 13 rpms going on 9 gear or 10 gear I have a short circuit for 2 or 3 sec's and then goes away and everything is… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
5,353 satisfied customers
i have a 06 international 9900 with a C15 CAT ESN:MXS67145
i have a 06 international 9900 with a C15 CAT ESN:MXS67145 check engen light on. pluged in with cat ET and had three codes. 0108-36 barometric pressure voltage high 0231-12 j1939 device not responding… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
5,353 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

6,062 satisfied customers

Owner at DJ Wilson

Cat Man

Cat Man

Cat Engine Expert

5,353 satisfied customers

I am ASE Master Truck Certified.

Wayne

Wayne

Journeyman

17,938 satisfied customers

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

Jeremy

Jeremy

Certified Truck/Bus Technician

2,756 satisfied customers

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

Curtis B.

Curtis B.

Technician

1,947 satisfied customers

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

cumminsdr

cumminsdr

Mechanic

1,886 satisfied customers

All types of Cummins applications

Chris (aka-Moose)

Chris (aka-Moose)

Technician

641 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