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 mack pinnacle cxu 613. None of the cigarette
I have a mack pinnacle cxu 613. None of the cigarette lighters are working. Trying to find the fuse … read more
Mike Mcmillan
Mike Mcmillan
Shop Foreman/Triage Tech
Associates
6,292 satisfied customers
Speedometer quits working and the truck loses power. 2013
speedometer quits working and the truck loses power. 2013 mack mp8 … read more
Mike Mcmillan
Mike Mcmillan
Shop Foreman/Triage Tech
Associates
6,292 satisfied customers
2013 pinnacle mp8 mack with 315000 miles on it runs for 30
2013 pinnacle mp8 mack with 315000 miles on it runs for 30 miles ish and then starts missing you can shut it off wait appx 15 minutes it will run great for another 20 miles and then back to the missin… read more
Mike Mcmillan
Mike Mcmillan
Shop Foreman/Triage Tech
Associates
6,292 satisfied customers
I have a 2012 mack pinnacle with a mack mp8 engine. I have
I have a 2012 mack pinnacle with a mack mp8 engine. I have no check engine lights on. I see rpms. The fuel bowl has fuel. It cranks and coughs, but no fire. Runs on ether. No bubbles in the fuel bowl … read more
Wayne
Wayne
Journeyman
Vocational, Technical or Trade Scho
5,115 satisfied customers
My truck just brake down now and I need assistance from
My truck just brake down now and I need assistance from technician please … read more
Mike Mcmillan
Mike Mcmillan
Shop Foreman/Triage Tech
Associates
6,292 satisfied customers
SCR system fault 2013 CHU 613 pinnacle. MP8 505 hp 2013 Mack
SCR system fault 2013 CHU 613 pinnacle JA: What's the make/model/year of your truck? Engine type? Customer: MP8 505 hp 2013 Mack CHU 613 JA: Are you fixing your truck yourself? What have you tried so … read more
Mike Mcmillan
Mike Mcmillan
Shop Foreman/Triage Tech
Associates
6,292 satisfied customers
2013 mp 8 shudder or buck off and on. 2013 mack pinnacle mp8
not sure if fixing myself or taking to dealer... started with fuel filters they seem to have a lot of black / possible alge … read more
Mike Mcmillan
Mike Mcmillan
Shop Foreman/Triage Tech
Associates
6,292 satisfied customers
Looking for fuse box diagram for 2013 Mack CXU613. Mack
Looking for fuse box diagram for 2013 Mack CXU613 JA: What's the make/model/year of your truck? Engine type? Customer: Mack CXU613 Pinnacle MP8 JA: Are you fixing your truck yourself? What have you tr… read more
Wayne
Wayne
Journeyman
Vocational, Technical or Trade Scho
5,115 satisfied customers
I had a fan belt break on my 2008 Mack CHU613 Pinnacle and
I had a fan belt break on my 2008 Mack CHU613 Pinnacle and the connected for the fan side control clutch ripped off. I need to know how to rewire without buying the entire assembly. … read more
Mike Mcmillan
Mike Mcmillan
Shop Foreman/Triage Tech
Associates
6,292 satisfied customers
I have a 2018 mack pinnacle mp8. No tail lights checked fuse
Hey alex I have a 2018 mack pinnacle mp8. No tail lights checked fuse no power coming to lights. Turn and brake lights work.… read more
Wayne
Wayne
Journeyman
Vocational, Technical or Trade Scho
5,115 satisfied customers
2014 mack pinnacle with a mp8. What is the best way to
2014 mack pinnacle with a mp8 . What is the best way to remove the air compressor … read more
Mike Mcmillan
Mike Mcmillan
Shop Foreman/Triage Tech
Associates
6,292 satisfied customers
Air compressor on my Mack pinnacle 2011 stop building air is
Air compressor on my Mack pinnacle 2011 stop building air is it something I can replace my self if so can you send instructions … read more
Bradey V
Bradey V
Certificate
I have a Mack 2011 with mp8 it shakes badly when it reach
I have a Mack 2011 with mp8 it shakes badly when it reach above 50 I have change the fuel filter housing and still the same I have to gear down from 10 to 9 speed because the vibration is really bad what can be the possible problwm … read more
Mike Mcmillan
Mike Mcmillan
Shop Foreman/Triage Tech
Associates
6,292 satisfied customers
When truck is pulling a heavy load at 1000 to 1200 rpm it
When truck is pulling a heavy load at 1000 to 1200 rpm it shakes and vibrates until it gets above 1400 rpm. … read more
Mike Mcmillan
Mike Mcmillan
Shop Foreman/Triage Tech
Associates
6,292 satisfied customers
After having a quacolmm instaled in a Mack CXU with a MP8
Hello,After having a quacolmm instaled in a Mack CXU with a MP8 engine the jake brake and cruise control has quit working. … read more
Mike Mcmillan
Mike Mcmillan
Shop Foreman/Triage Tech
Associates
6,292 satisfied customers
Putting on evo tech performance chip on 2015 mack cxu model
putting on evo tech performance chip on 2015 mack cxu model pinnacle mp8 … read more
Mike Mcmillan
Mike Mcmillan
Shop Foreman/Triage Tech
Associates
6,292 satisfied customers
My Mack mp8 is losing power under load turbo seem to be
Hi My Mack mp8 is losing power under load turbo seem to be showing boost no active codes but has inactive codes mid128 Psid44 fim14 and mid128 psid45 fim14 and they will not clear … read more
Mike Mcmillan
Mike Mcmillan
Shop Foreman/Triage Tech
Associates
6,292 satisfied customers
I have a 2011 mack has no power from bat but to starter but
I have a 2011 mack has no power from bat but to starter but the frame has 12 volts if u put yr tester to frame it is hot … read more
Andy
Andy
truck /coach technician
Vocational, Technical or Trade School
214 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