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 need oil pan bolt torque specs on a Mack MP7. 2008 Mack
I need oil pan bolt torque specs on a Mack MP7 JA: When was your last oil change? Have any error codes popped up? Customer: No JA: What's the make, model, and year of your car? Customer: 2008 Mack Gra… read more
Mike Mcmillan
Mike Mcmillan
Triage Tech/Shop Foreman
Associates
481 satisfied customers
I have mp7 start good but when running shut off. Mack 2007
Hi I have mp7 start good but when running shut off … read more
Mike Mcmillan
Mike Mcmillan
Triage Tech/Shop Foreman
Associates
481 satisfied customers
2017 mack granite has grade gripper malfunction, abs cannot
2017 mack granite has grade gripper malfunction, abs cannot be detected, and vehicle speed erattic, its reading 156 mph when vehicle is stopped according to j pro … read more
Wayne
Wayne
Journeyman
Vocational, Technical or Trade Scho
4,563 satisfied customers
2010 mack MP7 450 now in regeneration zone 4 with soot level
2010 mack MP7 450 now in regeneration zone 4 with soot level at 140 % when I start a force regeneration my after treatment fuel injection pressure starts at 65psi but quickly drops to 3psi and my exha… read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
5,454 satisfied customers
2019. Mack gr64ft. Code. Mid 144 psid247 fmi14 count 1. Its
2019. Mack gr64ft. Code. Mid 144 psid247 fmi14 count 1 … read more
Mike Mcmillan
Mike Mcmillan
Triage Tech/Shop Foreman
Associates
481 satisfied customers
2007 mack GU713 MP7. Mack / gu713/2007/ mp7. Ppid 330 fmi 4
Yes I'm fixing it looking at fuses but don't know which fuse… read more
Andy
Andy
truck /coach technician
Vocational, Technical or Trade School
211 satisfied customers
I have a 2009 Mack truck vin number ***************** I have
Ok I have a 2009 Mack truck vin number ***************** I have a turbo charger not responding here is code sid 27 fmi 7 amd engine oil temp sensor current below here is code pid 175 fmi 5 how I start… read more
Mike Mcmillan
Mike Mcmillan
Triage Tech/Shop Foreman
Associates
481 satisfied customers
I have a 2007 mack GU vin ***************** I need to know
I have a 2007 mack GU vin ***************** I need to know the location of the oil pressure sensor and the piston cooling pressure sensor… read more
Mike Mcmillan
Mike Mcmillan
Triage Tech/Shop Foreman
Associates
481 satisfied customers
We are in Canada and have no low beams or drl on our gu813
hello we are in Canada and have no low beams or drl on our gu813 2013 … read more
Mike Mcmillan
Mike Mcmillan
Triage Tech/Shop Foreman
Associates
481 satisfied customers
Will door off CH613 fit CVB713. Mack CV713 2007 what other
Mack CV713 2007 what other Mack model door will fit this model … read more
Mike Mcmillan
Mike Mcmillan
Triage Tech/Shop Foreman
Associates
481 satisfied customers
2006 mack ,mp7 engine. 2007 mack,mp7. 2007 mack,mp7. black
2007 mack,mp7. black smoke only when shifting.do not smoke when idling.there is no air leak turbo is ok no oil visible.on the exhaust manifold there is a small amount of oil coming out. … read more
Mike Mcmillan
Mike Mcmillan
Triage Tech/Shop Foreman
Associates
481 satisfied customers
We have a 2009 Mack Granite GU813 with a MP7 engine. The
Hi there We have a 2009 Mack Granite GU813 with a MP7 engine. The truck initially had an egr valve fault code when we went out to it first. The truck has low power and had a DPF delete. The only activ… read more
Mike Mcmillan
Mike Mcmillan
Triage Tech/Shop Foreman
Associates
481 satisfied customers
I have a 2007 Mack Granite with a MP7 engine. The model
I have a 2007 Mack Granite with a MP7 engine. The model number is ***** 713, ser# ***** The problem is fuel is mixing with the oil. What are all of the various scenarios that this could happen? I need… read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
5,454 satisfied customers
Have a 2012 Mack with a mp7 had a code for fan clutch had it
Have a 2012 Mack with a mp7 had a code for fan clutch had it in a shop they verified I replaced the fan clutch no codes now but still have no manifold pressure are boost pressure … read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
5,454 satisfied customers
2007 MP7 runs good in lower ear but looses power in higher
2007 MP7 runs good in lower ear but looses power in higher gear (spped ) no manifold pressure … read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
5,454 satisfied customers
2007 Mack Granite with grappling arm and box mounted on
2007 Mack Granite with grappling arm and box mounted on frame. brake lights work no turn signals, where is the fuse?? if one?? how do we get them working???… read more
Jeremy
Jeremy
Certified Truck/Bus Technician
Associate Degree
4,361 satisfied customers
Cant get air system to pressure up..no leaks new governor.
Can't get air system to pressure up..no leaks new governor. .I'm able to hold air pressure back with thumb at air compressor… read more
Andy
Andy
truck /coach technician
Vocational, Technical or Trade School
211 satisfied customers
I have a 2007 mack granite with a cv713 engine and have
i have a 2007 mack granite with a cv713 engine and have changed out all fuel lines and replaced all fuel filters the truck does not respond in high gears it acts as if fuel is being shut off and if u … read more
jrloar
jrloar
Master HVAC Tech.
Associate Degree
57 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

4,361 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