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
Semi truck 05 mack building up to much air pressure and
semi truck 05 mack building up to much air pressure and blowing hoses water hoses and got oil in my air tank a radiator specialist told me the hoses are oversized because of to much pressure building … read more
Mike Mcmillan
Mike Mcmillan
Triage Tech/Shop Foreman
Associates
530 satisfied customers
I have a 2006 d12 semi truck Volvo with a coolant leak by
Hi i have a 2006 d12 semi truck Volvo with a coolant leak by bottom of radiator but not over heating or anything just leaking fast … read more
Mike Mcmillan
Mike Mcmillan
Triage Tech/Shop Foreman
Associates
530 satisfied customers
2007 d12 replaced thermostat and all orings and leaking
2007 d12 replaced thermostat and all orings and leaking coolant under pressure and higher rpm no leakage at idle stat housing has bolts only on one side to the head and no bolts to the front cover res… read more
Mike Mcmillan
Mike Mcmillan
Triage Tech/Shop Foreman
Associates
530 satisfied customers
I have problems with 2013 international prostar engine
I have problems with 2013 international prostar engine maxxforce 13. the antifrizer level when the truck is on or running. the antifrizer level is lowered to the point where the stop engine light come… read more
Wayne
Wayne
Journeyman
Vocational, Technical or Trade Scho
4,563 satisfied customers
I have 2 codes on my Peterbilt. Peterbilt 2010 C13 Acert. I
I have 2 codes on my Peterbilt JA: What's the make/model/year of your truck? Engine type? Customer: Peterbilt 2010 C13 Acert JA: Are you fixing your truck yourself? What have you tried so far? Custome… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
5,293 satisfied customers
I have a volvo Vnl 300 volvo engine D12 having a issue with
good day I have a volvo Vnl 300 volvo engine D12 having a issue with the Rad fan staying on unnecessarily even after engine has return to run temp it continues to stay on . Getting check engine ECU fr… read more
Wayne
Wayne
Journeyman
Vocational, Technical or Trade Scho
4,563 satisfied customers
Overheat in idle, loose power. Volvo VNL780 2007 D12. Noting
Overheat in idle, loose power JA: What's the make/model/year of your truck? Engine type? Customer: Volvo VNL780 2007 D12 JA: Are you fixing your truck yourself? What have you tried so far? Customer: N… read more
Kent Van Wagner
Kent Van Wagner
40 satisfied customers
Don't answer this question unless you are very knowledgeable
Please don't answer this question unless you are very knowledgeable on this issue. How does one get a semi air brakes that froze up thawed in the field?… read more
Alex Olsen
Alex Olsen
auto/diesel/industrial
524 satisfied customers
I have volvo with d12 engine, when I'm on hills and truck
I have volvo with d12 engine, when I'm on hills and truck starts to raise the temperature to let's say 210, fan does not turn on. I've replaced the fan clutch and still nothing. I'm not getting any fa… read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
5,454 satisfied customers
2010 Dodge Ram with 6.7 Cummins.Temp. gauge will go to hot
2010 Dodge Ram with 6.7 Cummins.Temp. gauge will go to hot after pulling heavy then coming to down hill where as much power is not required.Also top radiator hose collapses when the engine is reved. u… read more
Roy Belding
Roy Belding
7,807 satisfied customers
2007 volvo D12 my turn signals do not work, only four
2007 volvo D12 my turn signals do not work, only four flashers … read more
Doug Barnowski
Doug Barnowski
HD truck tech
14 satisfied customers
I have a 2009 peterbilt,it is wanting to build pressure in
I have a 2009 peterbilt,it is wanting to build pressure in the overflow tank.I changed the radiator cap,the hose between the radiator and reservoir is not plugged,I bypassed the precooler between the … read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
5,293 satisfied customers
I have a volvo trucks vnlwith d12 engine and i started
Hello,my name is***** have a volvo trucks vnl(###) ###-####with d12 engine and i started changing thermostat by my self because it was leaking antifreez. I opened everything cleaned the thermostat hou… read more
Dan
Dan
Road sevice Mechanic
Vocational, Technical or Trade Scho
354 satisfied customers
I have the low oil pressure warning at idle on my paccar daf
I have the low oil pressure warning at idle on my paccar daf cf85,i have changed the oil, filter, removed the oil cooler filter, the engine runs fine, but after it has warmed up, this warning comes on… read more
Eurotruck72
Eurotruck72
Garage owner
122 satisfied customers
I have a '07 cummins 400 isx. It builds up 25 lbs. plus pressure
I have a '07 cummins 400 isx. It builds up 25 lbs. plus pressure in the radiator reservoir and it blows antifreeze out. I replaced the air compressor and egr cooler and it still does the same thing. T… read more
Curtis B.
Curtis B.
Technician
Associate Degree
1,806 satisfied customers
we have a 2006 paystar that is over heating. Changed the thermostat
we have a 2006 paystar that is over heating. Changed the thermostat and no change. Should we change out fan to a direct drive?… read more
spankyjr1
spankyjr1
Journeyman
Vocational, Technical or Trade Scho
2,873 satisfied customers
Volvo: I have a 1997 Volvo Highway tractor semi with a VE D12
I have a 1997 Volvo Highway tractor semi with a VE D12 425 motor. Engine shuts down when engine temp reaches 180F. Check engine light comes on first. Diagnostic code indicates faulty coolant temp sens… read more
Andy
Andy
truck /coach technician
Vocational, Technical or Trade School
214 satisfied customers
ok fellows I have another problem the front EGR value the
ok fellows I have another problem the front EGR value the piping that goes into the motor is solid white and getting way to hot is the EGR valve bad if not what can it be thnks… read more
Jeremy
Jeremy
Certified Truck/Bus Technician
Associate Degree
2,747 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

5,454 satisfied customers

Owner at DJ Wilson

Cat Man

Cat Man

Cat Engine Expert

5,293 satisfied customers

I am ASE Master Truck Certified.

Wayne

Wayne

Journeyman

4,563 satisfied customers

worked on, Gmc, Macks, Freight liner,Mercedes Benz,,Ford, sterling

Jeremy

Jeremy

Certified Truck/Bus Technician

2,747 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

1,824 satisfied customers

All types of Cummins applications

Curtis B.

Curtis B.

Technician

1,806 satisfied customers

Technician turned service manager on multiple lines of trucks and engines, used in industry.

Chris (aka-Moose)

Chris (aka-Moose)

Technician

462 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