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I have a 2012 mack chu613 with an mp8 in it it keeps giving
I have a 2012 mack chu613 with an mp8 in it it keeps giving me a scr performace low service scr system and parked regen needed and the truck is derated … read more
Mike Mcmillan
Mike Mcmillan
Shop Foreman/Triage Tech
Associates
6,158 satisfied customers
I have a 2015 mack mp8 engine that will not stay out of
I have a 2015 mack mp8 engine that will not stay out of derate mode says poor def quality service def we have clleaned filters new in and out senseors doser valve put new vavles behind the starter and… read more
Mike Mcmillan
Mike Mcmillan
Shop Foreman/Triage Tech
Associates
6,158 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
6,158 satisfied customers
I have a 2012 Isuzu npr 5.2 diesel. It has the service
I have a 2012 Isuzu npr 5.2 diesel. It has the service exhaust system message and regen symbol on the ipc, When I first scanned it had a code for nox sensor position 1. Replaced the sensor and complet… read more
Joe Green
Joe Green
65 satisfied customers
Mack 2016 CHU, MP8. Only code is for the daytime head
Mack 2016 CHU, MP8. Only code is for the daytime head lights. No eml or mil on. Checked codes several times and restarted PTT. Truck has Temp system lockout check light on and kicks out of forced rege… read more
Mike Mcmillan
Mike Mcmillan
Shop Foreman/Triage Tech
Associates
6,158 satisfied customers
How are you, i am in very big problem mack truck mp8 cxu613
hi sir how are you, i am in very big problem mack truck mp8 cxu613 one million kms year 2014. fault codes report attached .truck takes regen everyday during the heavy load and some times twice a day. … read more
Mike Mcmillan
Mike Mcmillan
Shop Foreman/Triage Tech
Associates
6,158 satisfied customers
Working on a 2012 mack with a mp 8 and getting codes for
working on a 2012 mack with a mp 8 and getting codes for diesel particulate filter and soot levels,will not let me regen so do i need to change dpf filter… read more
Nich1019
Nich1019
Diesel Technician
Vocational, Technical or Trade School
41 satisfied customers
I have a 2018 CHU Mack MP8 engine showing me its @ 140% soot
Hi, i have a 2018 CHU Mack MP8 engine showing me its @ 140% soot level (only code is high soot level) filter only 6 months old try to force regen and outlet temp spikes to 900 and wont go any higher… read more
Mike Mcmillan
Mike Mcmillan
Shop Foreman/Triage Tech
Associates
6,158 satisfied customers
I noticed that Jeremy was online and has extensive
I noticed that Jeremy was online and has extensive experience diagnosing diesel engine problems. I have a 2009 Mack MRU that is producing engine malfunction code PPID 326 FMI 11, and I was wondering i… read more
Mike Mcmillan
Mike Mcmillan
Shop Foreman/Triage Tech
Associates
6,158 satisfied customers
Need to force regen on Mack MP8. The sensors went out. 2014
Need to force regen on Mack MP8. The sensors went out … read more
Jeremy
Jeremy
Certified Truck/Bus Technician
Associate Degree
2,756 satisfied customers
Regenwont. Stop. Regen. 2011 Mack mp8. Muffler came off had
Muffler came off had that mounted properly. Add ed. DPF. Filter. Cleaner … read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
6,062 satisfied customers
I recently retuned my MP8 deleted the DPF and egr and gave
I recently retuned my MP8 deleted the DPF and egr and gave it 48 more hp it now doesn't want to pull can hardly make 100 km per hour loaded … read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
6,062 satisfied customers
Mack mp8 2012 in derate no codes no check engine light no
mack mp8 2012 in derate no codes no check engine light no lightening bolt, service def on information screen won't let us take out of derate… read more
Expert
Expert
10,507 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 2010 mack MP8 that wont complete it s regen
Hello i have a 2010 mack MP8 that wont complete it s regen starts then stops screen says that DPF needs service but was cleaned 4 months ago is cleaning intervals normally this close? an error also co… read more
Andy
Andy
truck /coach technician
Vocational, Technical or Trade School
214 satisfied customers
I have a MP8 not completing a regen, doser on 540 degreesdpf
I have a MP8 not completing a regen, doser on 540 degrees dpf inlet 750 degrees dpf outlet 750 degrees When it reaches these temp the doser shuts off new doser, new dpf, cleaned doc, new ambient air t… read more
Andy
Andy
truck /coach technician
Vocational, Technical or Trade School
214 satisfied customers
2008 Mack Granite GU 813. MP8 engine. lighting bolt is
2008 Mack Granite GU 813. MP8 engine. lighting bolt is on @ dash. blue regen switch is blinking. performed regen. before and after having dpf filter cleaned both lights are still on.(blinking regen sw… read more
Jeremy
Jeremy
Certified Truck/Bus Technician
Associate Degree
2,756 satisfied customers
I got 2009 Freightliner Columbia c15 sdp13149. In the past
I got 2009 Freightliner Columbia c15 sdp13149. In the past it gives me regen and check engine lights for a second once in a while. 2 weeks ago i cleaned DPF filter it was very dirty but in good condit… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
5,353 satisfied customers
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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.

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

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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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