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
2008 Mack gu713 mp8. Vin# 003183 Several codes need
2008 Mack gu713 mp8. Vin# ***** Several codes need definitions. Truck won't start unless u prime the crap out of it then it will start and runs fine. Recently had new injectors and cups and fuel filte… read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
6,062 satisfied customers
I have a 2019 Mac truck we change the fuel and oil filters
I have a 2019 Mac truck we change the fuel and oil filters and ran for about a minute and shut off .. I never had a problem the Mack Truck The last eight LM 018433 the fuel filter that I used is made … read more
Mike Mcmillan
Mike Mcmillan
Shop Foreman/Triage Tech
Associates
6,633 satisfied customers
I have a 2011 mack granite gu713 that is idling rough and
I have a 2011 mack granite gu713 that is idling rough and goes dead its has code SPN 558 FMI 5 which says low volt are bad connection idle validation switch. I can't find anything as to where or what … read more
Mike Mcmillan
Mike Mcmillan
Shop Foreman/Triage Tech
Associates
6,633 satisfied customers
2008 Mack gu713 mp8. Replaced injector cups and injectors.
2008 Mack gu713 mp8. Replaced injector cups and injectors. Replaced wire harness. Truck runs abit rough but good. Longer then normal crank time. Can you review codes I don't have a mack computer?… read more
Mike Mcmillan
Mike Mcmillan
Shop Foreman/Triage Tech
Associates
6,633 satisfied customers
It says temp system lockout check in the dash indicator. 2
It says temp system lockout check in the dash indicator … read more
Mike Mcmillan
Mike Mcmillan
Shop Foreman/Triage Tech
Associates
6,633 satisfied customers
NOT CAR DIESEL TRUCK MACK 2013. II NEED HELP WITH FAULT
NOT CAR DIESEL TRUCK MACK 2013 JA: What type of fuel do you typically use? When was your last oil change? Customer: II NEED HELP WITH FAULT CODES JA: What's the make/model of your 2013 truck? Customer… read more
Mike Mcmillan
Mike Mcmillan
Shop Foreman/Triage Tech
Associates
6,633 satisfied customers
ENGINE POSITION SENSOR. YESTERDAY. MACK GRANITE 2015.
ENGINE POSITION SENSOR JA: How long has this been going on with the sensor? Customer: YESTERDAY JA: What's the make, model, and year of your car? Customer: MACK GRANITE 2015 JA: Is there anything else… read more
Edgar.T
Edgar.T
Forman
Associate
94 satisfied customers
I have a 2014 mack granite series with a spn 1127 fmi 1
i have a 2014 mack granite series with a spn 1127 fmi 1 code. i need to know where to start. … read more
Mike Mcmillan
Mike Mcmillan
Shop Foreman/Triage Tech
Associates
6,633 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
Shop Foreman/Triage Tech
Associates
6,633 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
Shop Foreman/Triage Tech
Associates
6,633 satisfied customers
2009 Mack GU713 with a MP8-425M Hard start when sits
Second opinion] 2009 Mack GU713 with a MP8-425M Hard start when sits overnight cranks over then shuts off … read more
Wayne
Wayne
Journeyman
Vocational, Technical or Trade Scho
5,115 satisfied customers
2009 Mack GU713 with a MP8-425M Hard start when sits
2009 Mack GU713 with a MP8-425M Hard start when sits overnight cranks over then shuts off … read more
Mike Mcmillan
Mike Mcmillan
Shop Foreman/Triage Tech
Associates
6,633 satisfied customers
I have a 2009 Mack Granite gu713. It's asking for a regen
I have a 2009 Mack Granite gu713. It's asking for a regen but when I try to do it it stops 10 minutes later and asks to do it again. I've hooked my laptop on it to do a forced regen and same thing it … read more
Mike Mcmillan
Mike Mcmillan
Shop Foreman/Triage Tech
Associates
6,633 satisfied customers
My 2013 gu713 was whining from the front of engine I thought
My 2013 gu713 was whining from the front of engine I thought it was the power steering but then the check trans light came on? … read more
Mike Mcmillan
Mike Mcmillan
Shop Foreman/Triage Tech
Associates
6,633 satisfied customers
Got a 2009 mack gu713 when it gets hot and you shut it off
got a 2009 mack gu713 when it gets hot and you shut it off will crack for every and not start again only when hot not building fuel pressure let sit for awhile and cool off starts right back up … read more
Wayne
Wayne
Journeyman
Vocational, Technical or Trade Scho
5,115 satisfied customers
I have a 2007 mack granite with a mp7 motor, abs light on no
i have a 2007 mack granite with a mp7 motor, abs light on no start … read more
Jeremy
Jeremy
Certified Truck/Bus Technician
Associate Degree
2,756 satisfied customers
2008 Mack GU713 with MP7 engine, Fault codes;P094M128I907FCan
2008 Mack GU713 with MP7 engine, Fault codes; P094 M128 I9 07F Can you tell me what these codes are for… read more
Andy
Andy
truck /coach technician
Vocational, Technical or Trade School
214 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

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