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I'm in 5mph Derate on my 2015 Mack cxu613, MP8 engine. No
I'm in 5mph Derate on my 2015 Mack cxu613 , MP8 engine … read more
Joe Green
Joe Green
59 satisfied customers
I have a 2012 cxu613 mack with mp8 couple days ago engine
i have a 2012 cxu613 mack with mp8 couple days ago engine starts randomly killing when slowing down or stopping some times when just driving i also started loosing throttle pedal at random times resta… read more
Mike Mcmillan
Mike Mcmillan
Triage Tech/Shop Foreman
Associates
536 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
Triage Tech/Shop Foreman
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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
Triage Tech/Shop Foreman
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536 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
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536 satisfied customers
Mack 2014 pennicle mp8 engine approx 200k miles dump truck.
Mack 2014 pennicle mp8 engine approx 200k miles dump truck.Power leash engine brake started cutting in & out under load rocking the engine trans & cab, like a truck with death wobble.I can recreate it… read more
Mike Mcmillan
Mike Mcmillan
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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
Triage Tech/Shop Foreman
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536 satisfied customers
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
Triage Tech/Shop Foreman
Associates
536 satisfied customers
Iv been wrenching on Mack Kentworth Cummings frieghtliner
Hello iv been wrenching on Mack Kentworth Cummings frieghtliner Volvo for 7 years now. And all the sudden my boss thought it would be nice to buy a new truck understand the new regulations for def fue… read more
Mike Mcmillan
Mike Mcmillan
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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)
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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
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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
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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
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2007 C7 cat. 0 power on hills. Skips at full throttle leaves
2007 C7 cat. 0 power on hills. Skips at full throttle leaves me doing 3 mph. But most of time just lacks a little power … read more
Cat Man
Cat Man
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Vocational, Technical or Trade Scho
5,349 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
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I have a c15 acert and a 2001 c15 single turbo in a Pete can
I have a c15 acert and a 2001 c15 single turbo in a Pete can I swap them and what problems would I have… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
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​ I need an answer from an experienced Detroit Diesel
​Hello, I need an answer from an experienced Detroit Diesel mechanic. I have a 1994 Volvo GMC with a Detroit Diesel 12​.7​ liter engine DDEC III. Engine has 350,000 miles (fuel injectors are rebuilt) … read more
Jeremy
Jeremy
Certified Truck/Bus Technician
Associate Degree
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Have an early production C-15 6nz engine that maintains 60
Have an early production C-15 6nz engine that maintains 60 psi oil pressure running down the road at normal highway speeds (55 -60 mph). When throttle is pressed down oil pressure drops to 40-45 almos… read more
Cat Man
Cat Man
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Vocational, Technical or Trade Scho
5,349 satisfied customers
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Meet the Experts:

Daniel Wilson

Daniel Wilson

13,973 satisfied customers

Owner at DJ Wilson

Cat Man

Cat Man

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I am ASE Master Truck Certified.

Wayne

Wayne

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worked on, Gmc, Macks, Freight liner,Mercedes Benz,,Ford, sterling

Jeremy

Jeremy

Certified Truck/Bus Technician

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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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cumminsdr

cumminsdr

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All types of Cummins applications

Chris (aka-Moose)

Chris (aka-Moose)

Technician

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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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