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 am in New Orleans,Louisiana. I own a small to mid-sized
Hi, My name is ***** ***** I am in New Orleans,Louisiana. I own a small to mid-sized construction company specializing in demolition, excavation, heavy and civil construction.My question is related to… read more
Wayne
Wayne
Journeyman
Vocational, Technical or Trade Scho
5,115 satisfied customers
I have a 2017 Mack MRU 613 with an MP7 engine (concrete pump
I have a 2017 Mack MRU 613 with an MP7 engine (concrete pump truck). The engine intermittently is cutting off. Some days as often as 10-20 times. Other days (like today), it did not cut off once. Comp… read more
Mike Mcmillan
Mike Mcmillan
Shop Foreman/Triage Tech
Associates
6,192 satisfied customers
I am trying to diagnose a Mack MP10 engine that shakes when
I am trying to diagnose a Mack MP10 engine that shakes when it is cold. It is in a TD and the truck is 2012 emissions. The injectors have been changed, the valves adjusted, a new VEB installed, the en… read more
TomcM28
TomcM28
Owner
Associates
13 satisfied customers
2014 Mack 2014 Mack pinnacle dump truck, 215k miles, MP8
2014 Mack 2014 Mack pinnacle dump truck, 215k miles, MP8 engine & 10 speed transmissionIt was converted to a dump truck around 150k miles.Dash assembly looks like the truck was originally outfitted wi… read more
Mike Mcmillan
Mike Mcmillan
Shop Foreman/Triage Tech
Associates
6,192 satisfied customers
2014 Mack pinnacle dump truck, 215k miles, MP8 engine & 10
2014 Mack pinnacle dump truck, 215k miles, MP8 engine & 10 speed transmissionWhen pulling a hill or rolling hills and coming slightly off throttle, the engine acts like like it drops all fuel or has a… read more
Mike Mcmillan
Mike Mcmillan
Shop Foreman/Triage Tech
Associates
6,192 satisfied customers
2014 Mack pinnacle dump truck, 215k miles, MP8 engine & 10
2014 Mack pinnacle dump truck, 215k miles, MP8 engine & 10 speed transmissionWhen pulling a hill or rolling hills and coming slightly off throttle, the engine acts like like it drops all fuel or has a… read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
6,062 satisfied customers
I have a 1995 scania p113 320 and the exhaust brake does not
Hi I have a 1995 scania p113 320 and the exhaust brake does not activate. I hit the switch in the cab and depress the brake pedal and all I can hear is a mass dumping of air. It sounds like it comes f… read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
6,062 satisfied customers
2014 mack Pinnacle MP8 engine truck cranks over but will not
2014 mack Pinnacle MP8 engine truck cranks over but will not start unless the throttle pedal is quickly pumped, and it still takes several attempts.truck will start normally if running, shut down and … read more
Mike Mcmillan
Mike Mcmillan
Shop Foreman/Triage Tech
Associates
6,192 satisfied customers
I just bought a 2013 Mack granite quad axle dump truck, 1
Hey pal I just bought a 2013 Mack granite quad axle dump truck, 1 regular pusher and the other lifter is a tag, brand new tires on the tag. Was running it loaded today for the first time and every tim… read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
6,062 satisfied customers
Got a mind blower here: 2014 Ford F450 6.7L Diesel VIN:
got a mind blower here:2014 Ford F450 6.7L Diesel VIN: 1FD0W4GT1EEA93834NO CODES SYMPTOM: loss of power, and subsequent slowing of vehicle to almost to the point of stalling.WHEN: For about a year but… read more
Chris (aka-Moose)
Chris (aka-Moose)
Technician
641 satisfied customers
I have a 2010 mack trident MP8 engine,done 935000 klm had
Hi Steve i have a 2010 mack trident MP8 engine,done 935000 klm had injectors and cups done about 375000 klms ago last week 19/3/19 had injectors removed and two new cups fitted and put the same inject… read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
6,062 satisfied customers
Assist malfunction. 2011 chu613 mack mp8. Not sure what
not sure what happened,brakes locked tried to move forward and lost all air … read more
Mike Mcmillan
Mike Mcmillan
Shop Foreman/Triage Tech
Associates
6,192 satisfied customers
I built a cxu613 transfer truck.I am unable to wire the
I built a cxu613 transfer truck.I am unable to wire the reverse button ton … read more
Mike Mcmillan
Mike Mcmillan
Shop Foreman/Triage Tech
Associates
6,192 satisfied customers
Have a 2011 mack with a mp8 engine whining sound from engine
Have a 2011 mack with a mp8 engine whining sound from engine at 25psi of turbo boost then it shoots up to 38psi of boost … read more
Mike Mcmillan
Mike Mcmillan
Shop Foreman/Triage Tech
Associates
6,192 satisfied customers
I have a mp8 with a loud squealing noise while it's
I have a mp8 with a loud squealing noise while it's regenerating. The lightning bolt is illuminated on the dash. And it's not completing the regen.… read more
Mike Mcmillan
Mike Mcmillan
Shop Foreman/Triage Tech
Associates
6,192 satisfied customers
Having problems with a 2014 mack MP8. Truck seems to buck or
Having problems with a 2014 mack MP8. Truck seems to buck or shudder around 1400 rpm. Seems to be more of an issue when cool in the morning. Truck is starting fine. Injectors were updated with stainle… read more
Mike Mcmillan
Mike Mcmillan
Shop Foreman/Triage Tech
Associates
6,192 satisfied customers
Mack MP8 EGR engine. It's in a Mack Trident ( Australian model.)
Mack MP8 EGR engine. It's in a Mack Trident ( Australian model.) used to haul triple roadtrains in Western Queensland and the Northern Territory. I have replaced the EGR valve and the new one is doing… read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
6,062 satisfied customers
I have a 2001 mack rd688s with a 8LL transmission and 400 motor.
I have a 2001 mack rd688s with a 8LL transmission and 400 motor. It was making a strange noise at very slow speeds during the warm weather. It only happened while hauling a heavy load, usually up a hi… read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
6,062 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

5,353 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