Medium and Heavy Trucks

Have truck repair questions? Ask an Expert

Connect one-on-one with {0} who will answer your question

Have a 2012 Mack with a mp7 had a code for fan clutch had it…

Customer Question
Have a 2012 Mack...

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

Mechanic's Assistant: What's the make/model/year of your truck? Engine type?

2012 cxu 613 MP7

Mechanic's Assistant: Anything else you want the truck mechanic to know before I connect you?

No just trying to find out what I need to trouble shoot for no pressure

Submitted: 5 years ago.Category: Medium and Heavy Trucks
Show More
Show Less
Ask Your Own Medium and Heavy Trucks Question
Answered in 3 hours by:
9/23/2017
Technician: Daniel Wilson,
 replied 5 years ago
Daniel Wilson
Category: Medium and Heavy Trucks
Satisfied Customers: 15,135
Experience: Owner at DJ Wilson
Verified

Hi my name is***** post all fault codes you have logged in the ECM...

Ask Your Own Medium and Heavy Trucks Question
Customer reply replied 5 years ago
last fault code was spn 645 fmi5 fan clutch replaced fan clutch no code but truck shows no manifold pressure are very low pressure and will not rev more then around 10000 to 11000
Technician: Daniel Wilson,
 replied 5 years ago

Thanks for the update. If no manifold or boost, check the CAC and intake piping for leaks and if okay check for a faulty turbocharger or turbo actuator. Verify the VNT turbo operation and for excessive carbon/soot buildup. Let me know the results

Ask Your Own Medium and Heavy Trucks Question
Was this answer helpful?

How JustAnswer works

step-image
Describe your issueThe assistant will guide you
step-image
Chat 1:1 with a technicianLicensed Experts are available 24/7
step-image
100% satisfaction guaranteeGet all the answers you need
Ask Daniel Wilson Your Own Question
Daniel Wilson
Daniel Wilson
Daniel Wilson
Category: Medium and Heavy Trucks
Satisfied Customers: 15,135
15,135 Satisfied Customers
Experience: Owner at DJ Wilson

Daniel Wilson is online now

Related Medium and Heavy Trucks Questions
Clutch issues. Its all stock oem. 2017 mack pinnacle cxu 613
Sure! I was also trying to know if i can put another brand clutch… read more
Mike Mcmillan
Mike Mcmillan
Triage Tech/Shop Foreman
Associates
607 satisfied customers
Mack CXU 613 MID 128 PPID 270 FMI 12. How I could be sure
Hi! Mack CXU 613 MID 128 PPID 270 FMI 12. How I could be sure it's inlet or outlet NOX? Thanks! … read more
Wayne
Wayne
Journeyman
Vocational, Technical or Trade Scho
5,115 satisfied customers
16 Mack cxu MP8 cooling fan stuck on. apply air to hose
16 Mack cxu MP8 cooling fan stuck on. apply air to hose disengages. Noid not letting air pass … read more
TomcM28
TomcM28
Owner
Associates
14 satisfied customers
Mack CXU 613 with an MP 8 getting code P02D5 FMI:00 #5
Mack CXU 613 with an MP 8 getting code P02D5 FMI:00 #5 injector learned offset a maximum value… read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
15,135 satisfied customers
I forgot my cab light on overnight in my 2015 mack cxu. It
Hello. I forgot my cab light on overnight in my 2015 mack cxu. It drained my 7yr old batteries tremendously. I couldn't start the vehicle without getting a jump several times. I replaced the batteries… read more
Mike Mcmillan
Mike Mcmillan
Triage Tech/Shop Foreman
Associates
607 satisfied customers
WORKING ON A 2013 MACK CXU 613. THIS TRUCK HAS THREE
WORKING ON A 2013 MACK CXU 613. THIS TRUCK HAS THREE CIGARETTE LIGHTER LOCATIONS ON THE INSTRUMENT PANEL. WHICH FUSE SUPPLIES THE POWER ? … read more
Mike Mcmillan
Mike Mcmillan
Triage Tech/Shop Foreman
Associates
607 satisfied customers
2014 mack with a cxu 613 mp7 and im having issues with this
2014 mack with a cxu 613 mp7 and im having issues with this engine having high crankcase pressure and is pouring it out of the pcv assembly, down to the vent tube. we have done an overhaul on it and b… read more
Mike Mcmillan
Mike Mcmillan
Triage Tech/Shop Foreman
Associates
607 satisfied customers
I have in my shop a 08 cxu 613 Mack with mp8 engine has
I have in my shop a 08 cxu 613 Mack with mp8 engine has active codes for 1,2,3 injector open circuit. I suspect a broken wire. Mack says the wiring harness is 1 piece for complete engine, if I had the… read more
Joe Green
Joe Green
71 satisfied customers
My 2012 mack cxutransmission going in 1 an 2 an going
My 2012 mack cxu*****transmission going in 1 an 2 an going straight to 12 gear its saying sum bout lock up clutch pressure indicator an it saying transmission shift console primary … read more
Mike Mcmillan
Mike Mcmillan
Triage Tech/Shop Foreman
Associates
607 satisfied customers
2014 mack cxu 613 mp7 engine code p0016 keeps coming back.
2014 mack cxu 613 mp7 engine code p0016 keeps coming back. we have replaced the harness and engine rebuild as well, im asking if you could help me out as they dont have alot of info on this code. than… read more
Mike Mcmillan
Mike Mcmillan
Triage Tech/Shop Foreman
Associates
607 satisfied customers
My Mack cxu 613 is saying check fuel filter. It is also
My Mack cxu 613 is saying check fuel filter. It is also sputtering and occasionally the speed decreases … read more
Mike Mcmillan
Mike Mcmillan
Triage Tech/Shop Foreman
Associates
607 satisfied customers
2014 Mack CXU 613 is not getting fuel after new filter
2014 Mack CXU 613 is not getting fuel after new filter housing and fuel pump. Is there a complete fuel system diagram?… read more
Mike Mcmillan
Mike Mcmillan
Triage Tech/Shop Foreman
Associates
607 satisfied customers
When idling rpm is 12000 and accelerator no response. Mack
When idling rpm is 12000 and accelerator no response … read more
Mike Mcmillan
Mike Mcmillan
Triage Tech/Shop Foreman
Associates
607 satisfied customers
After having a quacolmm instaled in a Mack CXU with a MP8
Hello,After having a quacolmm instaled in a Mack CXU with a MP8 engine the jake brake and cruise control has quit working. … read more
Mike Mcmillan
Mike Mcmillan
Triage Tech/Shop Foreman
Associates
607 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
607 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
15,135 satisfied customers
I have a 2010 mack cxu 613 with codes MID 128 PPID 326 FMI
I have a 2010 mack cxu 613 with codes MID 128 PPID 326 FMI 11 also had another code MID 128 PPID 270 FMI 5 stop engine light is on and dpf regen light is flashing. We already had the DPF cleaned and w… read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
15,135 satisfied customers
engine is a MP7 In a mack cxu, idles good, throttle response
engine is a MP7 In a mack cxu, idles good, throttle response is o.k. seems to have flat spot in engine, no engine codes, boost pressure wont go over 6lbs, also engine willl get to 50MPH o.k. but very … read more
Jeremy
Jeremy
Certified Truck/Bus Technician
Associate Degree
2,756 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

15,135 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