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
ON A 2007 BUS WITH 926MBE, ALLISON TRANSMISSION, AND HAVE A
Second Opinion] I AM WORKING ON A 2007 THOMAS BUS WITH 926MBE, ALLISON TRANSMISSION, AND HAVE A CODE IN ENGINE FOR VEHICLE SPEED SENSOR OPEN CIRCUIT (SPN 84, FMI 3 ), SPEEDO DOESN'T WORK, AND ALSO HAV… read more
Ramon Capellan
Ramon Capellan
owner / operator
Auto Mechanics
26 satisfied customers
I have a 2007 Freightliner classic XL and it keeps blowing
I have a 2007 Freightliner classic XL and it keeps blowing the same airbag on the suspension. It's on the driver side front axle. We changed the leveling valve after the second one broke and then put … read more
Wayne
Wayne
Journeyman
Vocational, Technical or Trade Scho
5,115 satisfied customers
I have a 2001 Thomas Cat 3126 school bus. It will crank and
I have a 2001 Thomas Cat 3126 school bus. It will crank and run but the gas pedal will not engage. We replaced the throttle position sensor and this did not help. Hooked it to a scan tool and it is sa… read more
Scott Anthony
Scott Anthony
Master Technician
HS Diploma
3 satisfied customers
Cat C7 in Thomas rear engine school bus Was running with a
Cat C7 in Thomas rear engine school bus Was running with a miss and very low take off power. Did cylinder cut out test. Injectors all read in low 30s except for cylinder 2 which read 24 I have an iden… read more
Curtis B.
Curtis B.
Technician
Associate Degree
1,947 satisfied customers
Found strange pieces of metal in oil pan, have no idea what
Found strange pieces of metal in oil pan, have no idea what they could possible be from … read more
Wayne
Wayne
Journeyman
Vocational, Technical or Trade Scho
5,115 satisfied customers
I have a 2002 GMC Bus with a Cat 3126 engine. It cranks but
I have a 2002 GMC Bus with a Cat 3126 engine. It cranks but won't start. … read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,344 satisfied customers
Wanting to change out a 3126A engine in my 1998 Freightliner
Wanting to change out a 3126A engine in my 1998 Freightliner FL 70 40 pin to a 2002 Freightliner Thomas school bus FL 65 3126B 70 pin wondering if the cab has the same wiring harness from the cab to t… read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
6,062 satisfied customers
CAT Man, Looking at 2 Cabo express tachts for sale. One has
Looking at 2 Cabo express tachts for sale. One has twin C-9's with 2,180 hours with two new aftercoolers installed on 08/2018 along with full engine tune up. … read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,344 satisfied customers
99 bus VIN 1T7HR3B29Y1089987 with a 3326 CAT VIN 8YL28142
99 Thomas bus VIN 1T7HR3B29Y1089987 with a 3326 CAT VIN 8YL28142 need to know where oil pressure sending unit is located… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,344 satisfied customers
I have a 1954 gmc bus 4104 it a switch for the air bags man
i have a 1954 gmc bus 4104 it a switch for the air bags man or highway it works on man but not highway i canot find a part # or a name on it can you help … read more
Don
Don
fleet superintendent
Vocational, Technical or Trade Scho
1,637 satisfied customers
Second opinion] Issue: no-start Cat 3126 Engine: 2001 3126B
[Second opinion] Issue: no-start Cat 3126 Engine: 2001 3126B Caterpillar Engine / Serial number CKM24206 Vehicle: 2002 Thomas School Bus, front engine, flat nose bus Ambient temperature does not seem … read more
Jeremy
Jeremy
Certified Truck/Bus Technician
Associate Degree
2,756 satisfied customers
I'm having an intermittent no start issue with my cat 3126b.
I'm having an intermittent no start issue with my cat 3126b … read more
Jeremy
Jeremy
Certified Truck/Bus Technician
Associate Degree
2,756 satisfied customers
I need help with a CAT 3126 engine on a school bus. The
good morning. I need help with a CAT 3126 engine on a Thomas school bus. The engine turns on without any problem, but when the vehicle walks the accelerator locks up and gives a fault 84-1 Vehicle Spe… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,344 satisfied customers
I am working on a 2008 freightliner c-2 school bus and have
I am working on a 2008 freightliner c-2 school bus and have electrical issues. The 15 amp chassis acc. fuse keeps popping and I have no wiring diagrams showing what it powers. I disconnect a "shorting… read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
6,062 satisfied customers
Need chassis wire diagram for bus SAF T liner it has a no
Need chassis wire diagram for Thomas bus SAF T liner it has a no start condition with key switch but I can run the engine from the back and it starts right up.… read more
Jeremy
Jeremy
Certified Truck/Bus Technician
Associate Degree
2,756 satisfied customers
Tobiz, I have a Thomas Bus that the bottom A/C compressor
Tobiz, I have a Thomas Bus that the bottom A/C compressor is not coming on. Clutch will not pull back and compressor is not engaging. System has 5 pounds 8 ounces of freon in it. The thermostat seems … read more
Toby
Toby
Vocational, Technical or Trade Scho
107 satisfied customers
Hello! I have a 1999 Rear Engine Thomas School bus. It has
Hello! I have a 1999 Rear Engine Thomas School bus. It has a CAT 3126B engine. Lately, the engine has to be sprayed with ether to start. Once it starts it runs fine. If I shut it off, it will restart … read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,344 satisfied customers
Jeremy, The new multi-function switch did not fix the High
Jeremy, Good Morning Sir. The new multi-function switch did not fix the High Beam inop situation on the 2004 Thomas Bus. I could have sworn that was what it was, but that did not fix it. I still have … 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