Medium and Heavy Trucks

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I have a Mack truck, 2017 CHU. The truck is derating in high
I have a Mack truck, 2017 CHU. The truck is derating in high load situations. Driver says feels like he is loosing his boost. I keep getting P016F00 codes. The return valve has been deleted, new rail … read more
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Edgar.T
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Can u advice me if it's recommended to delete Iva on a 2008
Hi. Can u advice me if it's recommended to delete Iva on a 2008 cat c15 twin turbo. Not removing, just turning off from computer and I think they have to be tuned off … read more
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Nich1019
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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
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Got MX13 that is putting out grey smoke and smells like
Got MX13 that is putting out grey smoke and smells like overfueling. … read more
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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
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Mike Mcmillan
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I can't spell or write correctly but i am going to try. 2012
i can't spell or write correctly but i am going to try … read more
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I have a 2014 international Lonestar with a max force 13
Hello Andy.I have a 2014 international Lonestar with a max force 13 engine. The question I have is what are the power levels of the calibrations that can be programmed into the computer?… read more
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truck /coach technician
Vocational, Technical or Trade School
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I have a Mack MP8 445 with lose of power issue. Changed fuel
I have a Mack MP8 445 with lose of power issue. Changed fuel filters still having the issue … read more
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Steven I'm having a problem with one of my Mack trucks again
Hi Steven I'm having a problem with one of my Mack trucks again with it regening. It'll regen for 16 minutes and 45 exactly and just stop, each time I try to regening it. The codes it has is Soot leve… read more
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2009. Mack mp8 will not boost over 18 lbs, air to air is
2009. Mack mp8 will not boost over 18 lbs, air to air is good, fuel pressure 75, actuator swapped and calibrated, swapped deck, no difference, … read more
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I have a 2011 Peterbilt 389, I need to save fuel. Is there
I have a 2011 Peterbilt 389, I need to save fuel. Is there anything out in the market I can install to help performance and save fuel? … read more
Jeremy
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2007 mack with an MP8 engine.The customer brought it to me
2007 mack with an MP8 engine.The customer brought it to me after spending over 20,000 at a mack dealer and having a delete done hoping it would fix his low power.i am not a Mack expert so it is a scho… read more
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Mike Mcmillan
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From New Zealand, We have in our Fuel shop a Mack Granite
Hi There , My name is ***** ***** New Zealand , We have in our Fuel shop a Mack Granite MP8 EGR { deleted } truck that has been around the traps with extremely poor performance but very good fuel cons… read more
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I saw the answer about the under powered Mack engines CH635
I saw the answer about the under powered Mack engines CH635 330-350 hp. I also have two of these trucks. I have deleted the egr coolers but did not help much. Presently these trucks have rear differen… read more
Daniel Wilson
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Mack MP8 EGR engine. It's in a Mack Trident ( Australian model.)
Mack MP8 EGR engine. It's in a Mack Trident ( Australian model.) used to haul triple roadtrains in Western Queensland and the Northern Territory. I have replaced the EGR valve and the new one is doing… read more
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I'm looking at a 2012 CXU613. Has the MP8, Fuller RTL018918B,
I'm looking at a 2012 CXU613. Has the MP8, Fuller RTL018918B, and 3.58 rears. What problems do I need to know about the MP8 regarding reliability, fuel/oil consumption? Any valve train or after treatm… read more
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04 Mack Truck that is overheat and blows coolant on the right
04 Mack Truck that is overheat and blows coolant on the right side and shutting down under load on highway? Start it back up right away runs ok if you don't get hard into it.… read more
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What do you think about egr/dpf deletes? Can the dpf clean
What do you think about egr/dpf deletes? Can the dpf clean itself out after having coolant going thru it due to bad egr cooler… read more
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cumminsdr
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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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