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'm having trouble figuring out exactly what this code means
Good morning, I'm having trouble figuring out exactly what this code means and information about it. 2015 freight liner M2 6.7l Cummins and wabco abs module. Having issues with abs code sid14 fmi 4… read more
SteveR
SteveR
Shop Manager
High school
13 satisfied customers
Is there a drawing available for the PIN numbers for the
Is there a drawing available for the PIN numbers for the engine ECM on an 03 CAT 3126. I'm getting the No eng code amd read elsewhere to check voltage on certain pins… read more
BryanC0506
BryanC0506
TRC Master Service Tech
Associate of Applied Science in Automotive Technology
100 satisfied customers
Would like to have a pin out diagram for a 40pin exam for a
Would like to have a pin out diagram for a 40pin exam for a 1997 3126 … read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
6,062 satisfied customers
I got my truck road ready over the weekend but I can
I got my truck road ready over the weekend but I can honestly say this engine isn't anywhere near the 500,000 mile engine i had in my 2011. I know it doesn't matter because I feel like I'm living in a… read more
Expert
Expert
5 satisfied customers
I want to ask a question about a semi truck I'm working on.
I want to ask a question about a semi truck I'm working on. It's 2006 Freightliner Columbia and it's a no crank issue. Batteries are fully charged alternator doesn't seem to be an issue brand new star… read more
Wayne
Wayne
Journeyman
Vocational, Technical or Trade Scho
5,115 satisfied customers
I need to find a starter wiring circuit diagram for a C6500
I need to find a starter wiring circuit diagram for a C6500 GMC 1998 … read more
Andy
Andy
truck /coach technician
Vocational, Technical or Trade School
214 satisfied customers
20006 international 7400 dt466 dtc 134 pid 91 fmi7. Truck
20006 international 7400 dt466 dtc 134 pid 91 fmi7. Truck will rev to 1700 and just die. … read more
Mike Mcmillan
Mike Mcmillan
Triage Tech/Shop Foreman
Associates
616 satisfied customers
I am a heavy duty mechanic by trade. I have a 3126 cat
Hello I am a heavy duty mechanic by trade . I have a 3126 cat s/n#7as05448 in my 1998 national RV on a freightliner chassis. I bought this RV last spring. I serviced the whole unit. I used chevron del… read more
Mike Mcmillan
Mike Mcmillan
Triage Tech/Shop Foreman
Associates
616 satisfied customers
Is a real person there? 1998 fld120 freightliner semi truck
Ye sand no I am putting an engine form this truck in a tractor. I need a certain section of the wire diagram to figure out 4 wires … read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
6,062 satisfied customers
2006 Freightliner Classic Headlights will not dim. They stay
2006 Freightliner Classic Headlights will not dim. They stay on bright continuously. I've tested the dimmer micro switch in the Grote blinker and it works. Any ideas or wiring diagrams?… read more
Andy
Andy
truck /coach technician
Vocational, Technical or Trade School
214 satisfied customers
I have a 1996 Peterbilt 379 the fuse for the tachometer
I have a 1996 Peterbilt 379 the fuse for the tachometer speedometer alternator and a few extra accessory gauges will blow as soon as you plug it in I'm not real sure how to locate where the short may … read more
Andy
Andy
truck /coach technician
Vocational, Technical or Trade School
214 satisfied customers
I have a gmc 7500 with a cat that has a electrical problem
I have a gmc 7500 with a cat that has a electrical problem to the engine. Do you have a real good gmc mechanic available at this time. … read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
6,062 satisfied customers
3126 cat in a 1999 GMC topkick C6500, I made a swap and I
3126 cat in a 1999 GMC topkick C6500, I made a swap and I need the full ecu wiring, … read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,344 satisfied customers
We r working on a 2005 4300 we have codes 134 &135 we
we r working on a 2005 4300 we have codes 134 &135 we replace the pedal assy but we still cant get to throttle up… read more
Andy
Andy
truck /coach technician
Vocational, Technical or Trade School
214 satisfied customers
2008 IH 4200 1HTMPAFP78H546012, VT365 When you start the
2008 IH 4200 1HTMPAFP78H546012, VT365 When you start the engine and hit the accelerator once, the engine light comes on immediately, and then there is no longer any throttle response.… read more
Andy
Andy
truck /coach technician
Vocational, Technical or Trade School
214 satisfied customers
06 freightliner Columbia, voltage fluctuates as low as 13.3
06 freightliner Columbia, voltage fluctuates as low as 13.3 while driving and steadies off at 13.5 while driving majority of time. while idling or coming to a stop it goes up to 13.6. and almost full … read more
Jeremy
Jeremy
Certified Truck/Bus Technician
Associate Degree
2,756 satisfied customers
we are working on a 2003 FB1817 , it is a no start issue, we
we are working on a 2003 FB1817 , it is a no start issue, we traced power to the starter. we replaced the starter and we just get a click sound out of the solenoid. we re traced power back to the new … read more
Curtis B.
Curtis B.
Technician
Associate Degree
1,947 satisfied customers
I have a 2000 fl70 with a 3126 and I need a fuse panel chart
I have a 2000 fl70 with a 3126 and I need a fuse panel chart and a chassis wiring diagram. Thx, Fred… read more
Toby
Toby
Vocational, Technical or Trade Scho
107 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

10,344 satisfied customers

I am ASE Master Truck Certified.

Wayne

Wayne

Journeyman

5,115 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