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Related Medium and Heavy Trucks Questions
Have a mp8 and no power it has some kinda hastening from 12
Have a mp8 and no power it has some kinda hastening from 12 to 14 rpm and fuel pressure is 45 to 50 and on 17 rpm it goes to 60 under Load what could it be … read more
Mike Mcmillan
Mike Mcmillan
Shop Foreman/Triage Tech
Associates
6,474 satisfied customers
2007 IH 7400, *****************, DT570, Runs good but has
2007 IH 7400, *****************, DT570, Runs good but has low power. Codes recorded are, EGR position signal out of range low PID 27, FMI 4, and EGR position above/below desired level, PID 27, FMI 10.… read more
Mike Mcmillan
Mike Mcmillan
Shop Foreman/Triage Tech
Associates
6,474 satisfied customers
I have a Volvo Vn 2006 semi. 1000000. I just got it like 2
Is there anything else the Volvo Mechanic should know before I connect you? Rest assured that they'll be able to help you.… read more
Andrew G.
Andrew G.
Heavy Truck Mechanic
Heavy Duty Equipment - Truck and Transport Mechanic
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Do you work on the earlier maxxforce 13 engines? I am
Customer: Hello do you work on the earlier maxxforce 13 engines? … read more
Andy
Andy
truck /coach technician
Vocational, Technical or Trade School
214 satisfied customers
My truck was deleted over a year ago. He couldn't delete the
My truck was deleted over a year ago. He couldn't delete the egr valve on that particular truck. Trucks has lost tremendous amount of power almost like starving for air or fuel. Mack place cant figure… read more
Mike Mcmillan
Mike Mcmillan
Shop Foreman/Triage Tech
Associates
6,474 satisfied customers
Freightliner century with detroit 12.7 loosing power going
freightliner century with detroit 12.7 loosing power going up hills and acceleration lagging changed TPS the Turbo boost sensor all oil lines and nothing while driving one time started with small misf… read more
Expert
Expert
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I have a 2013 Mack CHU613 with the MP8 engine. 2013 Mack
-SPN 1072 FMI 4 -SPN 1127 FMI 18 -SPN 647 FMI 5 -SPN 4811 FMI 2 -SPN 4813 FMI 4 -SPN 1265 FMI 4 -SPN 3936 FMI 0 -SPN 1127 FMI 10 -SPN 1127 FMI 14 -SPN 411 FMI 7… read more
Mike Mcmillan
Mike Mcmillan
Shop Foreman/Triage Tech
Associates
6,474 satisfied customers
Getting spn 247 intermediately what does it mean. 2017
Getting spn 247 intermediately what does it mean JA: What's the make/model/year of your truck? Engine type? Customer: 2017 peterbilt 579 isx15 JA: Are you fixing your truck yourself? What have you tri… read more
Expert
Expert
10,510 satisfied customers
I have a 06 Mack granite with some egr related codes. I
I have a 06 Mack granite with some egr related codes. I think the other two are related to the pod 412 fmi 9 I get … read more
Mike Mcmillan
Mike Mcmillan
Shop Foreman/Triage Tech
Associates
6,474 satisfied customers
2010 spits air when turbo boost hits 50psi and drops off to
2010 spits air when turbo boost hits 50psi and drops off to 10 when pulling hills at high rpm … read more
Wayne
Wayne
Journeyman
Vocational, Technical or Trade Scho
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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
6,474 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
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On a 2005 cat c15 acert engine the vva were deleted in the
On a 2005 cat c15 acert engine the vva were deleted in the new program can they be removed… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
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2008 volvo vnl 780 with d16 engine. Issue: at full throttle
2008 volvo vnl 780 with d16 engine. Issue: at full throttle truck won't go over 1700rpm and run a rough like it's hitting a rev limiter. Anything below 100% throttle truck runs up to rpms fine but lac… read more
Mike Mcmillan
Mike Mcmillan
Shop Foreman/Triage Tech
Associates
6,474 satisfied customers
I rebuild this cummins isx 450 a while ago i chanmged all 6
hello sir i rebuild this cummins isx 450 a while ago i chanmged all 6 injectors what could other issue for low power CAC - OK turbo - OK turbo actuator driver - ok… read more
Andy
Andy
truck /coach technician
Vocational, Technical or Trade School
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I rebuild engine in march2014 on my international 9200 truck
I rebuild engine in march2014 on my international 9200 truck year 2005. Engine is Cummins ism 370 hp. Till now I ran it almost 43 K. In its first week I found out that it is emitting black smoke for a… read more
Travis A. Wells
Travis A. Wells
Truck Mechanic
Associates of Applied Science
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I have a 2010 peterbilt 387, w/cat sdp engine, 475hp. I have
I have a 2010 peterbilt 387, w/cat sdp engine, 475hp. I have 2 issues. 1. When pulling hills, long ones, the manifold pressure fluctuates. This happens when I let off the throttle or when I shift gear… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
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Have 07 Freightliner century. Dd 60 14 ltr. 750,000 has been
Have 07 Freightliner century. Dd 60 14 ltr. 750,000 has been running excellent but coolant level sensor went bad, unplugged it, drove about 1400 miles. Take off with back haul, damn seems way heavy . … read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
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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.

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Technician turned service manager on multiple lines of trucks and engines, used in industry.

cumminsdr

cumminsdr

Mechanic

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All types of Cummins applications

Chris (aka-Moose)

Chris (aka-Moose)

Technician

641 satisfied customers

24 years of experience diagnosing & repairing

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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.

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