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 2007 freightliner m2 with cat 3126. starts but dies
i have a 2007 freightliner m2 with cat 3126. starts but dies right after 10 sec0nd lost power then dies. already replaced heui pump aip sensor replace all filters. im still having the seame issue… read more
TomcM28
TomcM28
Owner
Associates
14 satisfied customers
Can a c7 cat replace a 3126? No our engine bent pushrods,
No our engine bent pushrods , camshaft or lifter problem, was wondering what it would take to swap them out. … read more
Jeremy
Jeremy
Certified Truck/Bus Technician
Associate Degree
2,756 satisfied customers
I have a question about doing a engine swap. Going from a
I have a question about doing a engine swap JA: Sure thing. The Mechanic will know what to do about your engine. Do you have any other details that could be helpful? Customer: Going from a 3126 and in… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,344 satisfied customers
I need help with a 1999 gmc 7500 truck I need the truck
I need help with a 1999 gmc 7500 truck I need the truck wording schematic thank you. Customer: Wiring schematic sorry … read more
Andy
Andy
truck /coach technician
Vocational, Technical or Trade School
214 satisfied customers
I have a c7 that at a idle The engine hunts if you look at
I have a c7 that at a idle The engine hunts if you look at the computer it's commanding 1400 pounds and then all of a sudden it's commanding 2300 and starts running really erratic at an iidle We put i… read more
AaronF721
AaronF721
Lead Technician
Diesel Technology
I have a 2008 Ford F750 truck with a CAT C7 engine. I would
I have a 2008 Ford F750 truck with a CAT C7 engine. I would like to swap it to a 3126 CAT engine. … read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,344 satisfied customers
I have a c7 engine that is giving me the following flash
i have a c7 engine that is giving me the following flash codes 1-5, 2-5, 3-9, 1-7, 1-5, 2-1, 3-2 … read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,344 satisfied customers
I am swapping a c7 2005 with a 3126 1999-2000. I have all
second opinion] Hi I am swapping a c7 2005 with a 3126 1999-2000. I have all the harness, sensors and ECM on both engines. Both trucks runs. The C7 is on its way out. Will the cab, ignition switch and… read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
6,062 satisfied customers
I am researching the reliability of a CAT 3126 engine. I
I am researching the reliability of a CAT 3126 engine. … read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,344 satisfied customers
I have a 3126 and a c-7. 3127 came out of a 2003 6500 and we
i have a 3126 and a c-7. 3127 came out of a 2003 6500 and we put it in a 05 7500 that has a c-7. When we put the wiring and computer out of thr 3126 all the lights in the dash are on and runs like cra… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,344 satisfied customers
I have 2004 Frieghtliner m2 cat engine c7 I replaced the
Hi I have 2004 Frieghtliner m2 cat engine c7 I replaced the engine to 3126 it's running perfect but the speed odemetor and the oil prusure is not working also the temp show high temp show high … read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,344 satisfied customers
What 3126 cat engines will swap with a c7acert in a 2007
What 3126 cat engines will swap with a c7acert in a 2007 freightliner M2, 280 hp? I understand the 3126 is more durable.… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,344 satisfied customers
Cat c7 swap to 3126 ideas, can I replace a 2006 cat c7 (wax)
can I replace a 2006 cat c7 (wax) (kal) with a 3126 engine complete Need to change wiring harness? … read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
6,062 satisfied customers
I took a 3126 engine from a 2000 gmc with a standard shift
I took a 3126 engine from a 2000 gmc with a standard shift transmission and put it in a 2006 ff 650 in place of a c7 with automatic transmission. My problem is that the transmission is shifting out of… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,344 satisfied customers
I am looking at a 1999 c6500 GMC truck with a CAT 3126 engine
I am looking at a 1999 c6500 GMC truck with a CAT 3126 engine (SN 7a531378). Are there any known problems with this engine? Currently the engine has 86,000 miles.… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,344 satisfied customers
CATMAN PLEASE, THINKING OF BUYING A 2004 MED DUTY TOW TRUCK,
CATMAN PLEASE, THINKING OF BUYING A 2004 MED DUTY TOW TRUCK, ALL MY CURRENT TRUCKS HAVE THE 3126. THIS TRUCK I AM LOOKING AT IS A C7 HOW DO THEY COMPARE, ARE THEY THE SAME ENGINE SERIES ? DRY SLEEVE, … read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,344 satisfied customers
I have a 2004 f-650, it has a caterpillar Serial number HEP12329,
I have a 2004 f-650, it has a caterpillar Serial number HEP12329, model number 3216, Can i interchange this with a model c7 serial number fmm14900 caterpillar engine? If so, what parts interchanges ha… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,344 satisfied customers
hello. i am looking to buy a moving truck. 24/26 ft under
hello. i am looking to buy a moving truck. 24/26 ft under 26k gvw. around 150,000 miles. My options are: intl with 466 engine or FTL with a cat engine (both with 210-225 hp) any recommendations?… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,344 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