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
No power to the ECM. From the ECM where do 52,53 and 70
No power to the ECM. From the ECM where do 52,53 and 70 wires go to? … read more
Nich1019
Nich1019
Diesel Technician
Vocational, Technical or Trade School
57 satisfied customers
I have a sterling with a C 12 cat in it went to turn a
I have a sterling with a C 12 cat in it went to turn a corner in the truck just died cranks over just fine it has plenty of prime in the fuel system it starts and runs of either but dies it will not s… read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
6,062 satisfied customers
C15 reads no eng, wont fire,gives code 140. power at pins 70
c15 reads no eng, wont fire,gives code 140. power at pins 70 52 53 and i thunk 55, but also has power at pins 63 65 67 and 69 … read more
Nich1019
Nich1019
Diesel Technician
Vocational, Technical or Trade School
57 satisfied customers
2005 KW W900 W/C15; NO START. Cranking is not an issue.
2005 KW W900 W/C15; NO START. Cranking is not an issue. Engine serial number MXS07943. Fuel pressure is 65 during crank with new filters, pressure regulator etc... There is no engine warning lamp, no … read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,344 satisfied customers
Have a 2001 379 Peterbilt VIN 1XP-5DB9X-8-1D528464 with a
have a 2001 379 Peterbilt VIN 1XP-5DB9X-8-1D528464 with a 3406e,,, we dropped in a crate motor and now we can't communicate with ECM.... I guess I need a pin test for ecm to make sure something didn't… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,344 satisfied customers
2000 model FL -112 freightliner with a C12 will not start
2000 model FL -112 freightliner with a C12 will not start can't get codes check engine light will not come on @ all … read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,344 satisfied customers
2010 C-13 code j1939 stop running, driving down the road
2010 C-13 code j1939 stop running JA: Thanks. Can you give me any more details about your issue? Customer: driving down the road engine stop running JA: OK got it. Last thing — Technicians generally e… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,344 satisfied customers
When drivers door is opened and closed it will shut off. Do
When drivers door is opened and closed it will shut off . Do you have any ideas of what the problem would be. It is a 387 Peterbilt 2005 has a c15 Cat motor.… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,344 satisfied customers
Have a c15 2007 same deal fuel delivery is good will crank
Have a c15 2007 same deal fuel delivery is good will crank over just will not fire up owner drove truck to location shut it off did his farming and truck will not crank up now… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,344 satisfied customers
Im working on a 2001 cat 3126. Died while driving cranks but
Im working on a 2001 cat 3126. Died while driving cranks but no start. No communication on pro link. engine serial #ckm19576… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,344 satisfied customers
2001,379 peterbilt going down road and the truck cut off lost
2001,379 peterbilt going down road and the truck cut off lost power to gauges ,have fuel,truck will spin over, fuse to ecm in battery box is good ,could it be ignition, relay?… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,344 satisfied customers
I need a wiring diagram of the pin input and out puts on a
I need a wiring diagram of the pin input and out puts on a 3126 Cat its in a Freightliner 1FVACXAK93HK20610. SERIAL#CKM54644. WONT START WILL NOT COMMUNICATE! I really want to check power and grounds … read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,344 satisfied customers
good morning i have a 2000 peterbilt with a 3126 engine that
good morning i have a 2000 peterbilt with a 3126 engine that cranks but will not start. no momentary engine light when switched on but i do have voltage on pin 52 and 53 with switch on or off and i ha… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,344 satisfied customers
Im working on a 2009 Sterling tractor with an acert c15. Truck
Im working on a 2009 Sterling tractor with an acert c15. Truck runs for 20-30 mins then dies like someone turned off the key. I can get two diag codes out of the dash cluster, SID 25 4 FAIL 07, and SI… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,344 satisfied customers
2009 c15 powering a drill rig. Shut down during normal operations.
2009 c15 powering a drill rig. Shut down during normal operations. Code is j1939 engine failure. Engine turns over ,wil not start… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,344 satisfied customers
Truck died, tried to start, will crank but not fire. 07 T800
Truck died, tried to start, will crank but not fire. 07 T800 CAT acert C15 The hour meter trip meter and odometer turn from numbers to dashes when you turn the key on… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,344 satisfied customers
i have a j1939 code on a 2009 peterbilt with a cat c13 engine.
i have a j1939 code on a 2009 peterbilt with a cat c13 engine. I am not getting the computer to show any of the chassis info from the ecm. The SID is 231 with FMI 14 as well as j1939 sid 231 with fmi … read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,344 satisfied customers
I have a 2003 Cat C-16 in a Kenworth W900L. It wont start,
I have a 2003 Cat C-16 in a Kenworth W900L. It won't start, the check engine light doesn't come on. I thought I would check for voltage at the ECM. Which plug and which terminal is it?… 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