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
1999 C7500 CAT 3126. THE COMPUTER FRIED. I installed a reman
1999 C7500 CAT 3126. THE COMPUTER FRIED. I installed a reman one programmed to my engine serial #. The engine starts and runs for about 30 seconds and shuts off. I connected my cheap scanner and it is… read more
Mike Mcmillan
Mike Mcmillan
Triage Tech/Shop Foreman
Associates
396 satisfied customers
Gm I have a 04 GMC c7500 7.2 Diesel engine cranks but will
Gm I have a 04 GMC c7500 7.2 Diesel engine cranks but will not start, I replaced the Heui pump, and no fuel coming … read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,213 satisfied customers
I have an 02 fl80 with 3126 cat. It starts and runs 3 or 4
I have an 02 fl80 with 3126 cat . It starts and runs 3 or 4 seconds and then dies. Crank again for 4 to 10 seconds it will start and run fine. If I shut it off starts fine unless it sits 15 minutes th… read more
Wayne
Wayne
Journeyman
Vocational, Technical or Trade Scho
4,023 satisfied customers
I have a 3126 in o2 FL70 dump truck 7 yarder. Lately I have
I have a 3126 in o2 FL70 dump truck 7 yarder. Lately I have to crank the engine longer for it to start like 15 to 25 seconds. Battery ate good and I plug it in on over night for it to trickle charge. … read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,213 satisfied customers
05 GMC C7500 C7 Cat...reduced engine power light (arrow down
05 GMC C7500 C7 Cat...reduced engine power light (arrow down engine) flash codes are 6...3...9 with equal 2 second pauses between each number. Cant find codes anywhere online... … read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,213 satisfied customers
I have 2005 cat c7 changed the fuel filters and can't get it
Hi I have 2005 cat c7 changed the fuel filters and can't get it primed … read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,213 satisfied customers
Have an FL 80 Freightliner with 3126 engine that is
Have an FL 80 Freightliner with 3126 engine that is experiencing intermittently severe power loss. After sitting and cooling off power level return to normal levels only to relapse in an hour or two o… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,213 satisfied customers
I have a 1998 gmc top kick with a cat 3126 motor will not
I have a 1998 gmc top kick with a cat 3126 motor will not start unless I manually prime then runs and stalls after the primed fuel runs out sometimes stays running driving tell you take a corner or go… read more
FIX-IT
FIX-IT
Comercial transport technician
Vocational, Technical or Trade Scho
829 satisfied customers
I have a GMC c7500 hundred with a 3116 cat. I parked it now
I have a GMC c7500 hundred with a 3116 cat. I parked it now it won't start. It cranks but will not fire. Any ideas?… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,213 satisfied customers
I have a 73 GMC c7500 dump truck with a detroit diesel
I have a 73 GMC c7500 dump truck with a detroit diesel engine. I have not worked a lot with diesel engines. I think this truck has air in the fuel lines since we changed the fuel filters. How to we ge… read more
Curtis B.
Curtis B.
Technician
Associate Degree
1,571 satisfied customers
gmc c7500: Engine ran fine, added fuel and went back to route.
Engine ran fine, added fuel and went back to route. It smoked some, then after a while it shut off like it ran out of fuel. Turns over fine, checked fuel to see if it getting to filter. It is making i… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,213 satisfied customers
Ford F550 Super Duty (Diesel): We got a ford F550 diesel super
We got a ford F550 diesel super duty truck and after changing the fuel filters engine starts for few seconds and then shuts off. What is the problem?… read more
Jeremy
Jeremy
Certified Truck/Bus Technician
Associate Degree
2,740 satisfied customers
2000 GMC C7500 3126 Cat. Shuts down occasionally and won't
2000 GMC C7500 3126 Cat. Shuts down occasionally and won't restart. Other days it starts and runs fine all day long. The only Data link we can find is OBD2. My Prolink IQ shows no communication. Is th… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,213 satisfied customers
i have a 2002 chevy c7500. it ran out of fuel. the gauge read
i have a 2002 chevy c7500. it ran out of fuel. the gauge read 1/4 tank but was faulty. ever since it won't start unless i prime the system. then it runs fine. i replaced the regulator and the transfer… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,213 satisfied customers
I have a 2000 gmc 8500 with a cat 3126 it has sat for about
I have a 2000 gmc 8500 with a cat 3126 it has sat for about two years I did start it from time to time I was driving it to get a state inspection and it drove fine for about three miles then it acted … read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,213 satisfied customers
Hello Cat Man: I have a 1999 Chevrolet C7500 with a Cat 3126
Hello Cat Man: I have a 1999 Chevrolet C7500 with a Cat 3126 engine. It just died while warmining up due to a lack of fuel. All fuel lines are clear and tight - no leaks. We have replaced the fuel shu… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,213 satisfied customers
I got a 2004 GMC c7500 single axel truck from a bank rope
i got a 2004 GMC c7500 single axel truck from a bank rope only28000 miles on truck it has an intermittent problem in that it seems to loose prime in the fuel system and won't start hand primer seems n… read more
Chris (aka-Moose)
Chris (aka-Moose)
Technician
Vocational, Technical or Trade School
353 satisfied customers
i have a 2002 Caterpillar engine model 3126 in a motorhome,
i have a 2002 Caterpillar engine model 3126 in a motorhome, how do i drain air in fuel line, or prime it?… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,213 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

10,213 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