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 2012 Diesel Pusher Class A motorhome with 400 HP
I have a 2012 Diesel Pusher Class A motorhome with 400 HP Cummins on a freightliner chassis. Every 200-300 miles the low coolant warning comes on along with the check engine light. You have about 2-3 … read more
NicholasM1019
NicholasM1019
Diesel Technician
GED
2 satisfied customers
Truck running too cool. C15 6nz had thermostat replaced.
Truck running too cool. C15 6nz had thermostat replaced. After warmup, takes 20 miles to get temp to 190. Temp drops 15 degrees going thru a small town, then it will pick back up in few miles. At 800 … read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
4,737 satisfied customers
Peterbilt 2004 379 bxs 10888 cat c15 -problem is engine when
peterbilt 2004 379 bxs 10888 cat c15 -problem is engine when running down road at cruise, engine will cool to about 150 degrees. sit at loading dock and idle will run about 190. pull a hill will come … read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,221 satisfied customers
C15 Cat in a 4900 Western Star losing 2to3 gallons coolant
C15 Cat in a 4900 Western Star losing 2to3 gallons coolant per day. No visible leaks, exhaust not white,not skipping,not blowing out overflow. Help me.… read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
4,737 satisfied customers
How did I get water in oil on a cat 6nz. I have to go look
how did I get water in oil on a cat 6nz JA: What is the complete model and serial number of your machine? Customer: i have to go look it up give me a min JA: Are you fixing this yourself? What have yo… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,221 satisfied customers
I have a Cat C13 SN: KCB81769 with 258k miles on it.
I have a Cat C13 SN: KCB81769 with 258k miles on it. Recently it has developed some blow by. It doesn't seem excessive, but it went from zero to some in 2 weeks. The truck does not drip any oil out of… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,221 satisfied customers
I have a question? It's a detroit series 60 14l engine from
It's a detroit series 60 14l engine from a freightliner columbia 06 … read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
4,737 satisfied customers
Working on a Cat C12. Burning anywhere from 5 to 8 gal a day
Working on a Cat C12. Burning anywhere from 5 to 8 gal a day last fall during harvest. Brought into shop finally to work on, before it was plain ally visible white smoke from exhaust feeling comfortab… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,221 satisfied customers
Cat man, 2002 international with C15 have to add some
Cat man, 2002 international with C15 have to add some coolant every so often , can not find external leaks. Engine oil is fine. Where else to check. Also, water drips off the blow by hose and it has m… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,221 satisfied customers
2006 freightliner century Detroit series 60 12.7 510,000
2006 freightliner century Detroit series 60 12.7 510,000 miles Truck burning oil approx 1-2 gallons a week depending on how far truck is driven. Truck has very excessive blow by from crankcase breathe… read more
Roy Belding
Roy Belding
7,524 satisfied customers
2006 Cat C15 ACERT. 2 gallons of coolant in 365 miles. Oil
2006 Cat C15 ACERT. 2 gallons of coolant in 365 miles. Oil looks ok on the dip stick but this is on the front axle under the breather tube. Can't find any visible leaks on the coolant system. Any idea… read more
FIX-IT
FIX-IT
Comercial transport technician
Vocational, Technical or Trade Scho
829 satisfied customers
We have an 07 pete with c15 acert its pushing antifreeze out
we have an 07 pete with c15 acert its pushing antifreeze out the overflow but only when the turbo boost is above 40 lbs head and head gasket has ben replaced cat has put it on dyno and nobody can find… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,221 satisfied customers
2012 freightliner cascadia Cummins... 2012 freightliner
2012 freightliner cascadia Cummins... 2012 freightliner cascadia Cummins engine. Fault code 111 fit looks coolant comes on just when I turn on the engine after turning it off for a while. Then it turn… read more
Wayne
Wayne
Journeyman
Vocational, Technical or Trade Scho
4,023 satisfied customers
C15 losing 3 gallons aday oi; sample clean fuel sample good
c15 losing 3 gallons aday oi; sample clean fuel sample good water sample good! where is it going… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,221 satisfied customers
I have a 2007 Peterbilt 379 with a C15 engine that is losing
I have a 2007 Peterbilt 379 with a C15 engine that is losing a lot of antifreeze but does not have any visible leaks other than the drain tube from the reservoir. It is building high pressure, but is … read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,221 satisfied customers
I am working on a 2010 w900 kenworth with an isx. It is using
I am working on a 2010 w900 kenworth with an isx. It is using about one to two gallons of coolant per week. It does not appear to be leaking anywhere on the engine or truck heating system. I pressuriz… read more
cumminsdr
cumminsdr
Mechanic
High School or GED
1,700 satisfied customers
Hi cat man I have a 2004 freightliner wit a cat c15 engine Few
Hi cat man I have a 2004 freightliner wit a cat c15 engine Few weeks ago I had a problem the truck switched off the engine and had f8 code and didn't want to switch gears replaced the computer box and… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,221 satisfied customers
I have a 2003 western star with a c15 it is using a gallon
I have a 2003 western star with a c15 it is using a gallon of antifreeze a day ....don't see any sign of a leak ANYWHERE.. not in oil, overflow hose ...pressure checked reservoir tank..all good ..But … read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,221 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

10,221 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