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Related Medium and Heavy Trucks Questions
Our Peterbilt 2015 started having the same issue again with
Goodmorning Nick Our Peterbilt 2015 started having the same issue again with the pedal Not responding and accelerating itself a bit We had installed the new pedal and was working great for about 3 Wee… read more
Nich1019
Nich1019
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Vocational, Technical or Trade School
55 satisfied customers
Are cranks in a e7 400. Mack truck and a 350 mack the same
Are cranks in a e7 400. Mack truck and a 350 mack the same stroke … read more
Mike Mcmillan
Mike Mcmillan
Triage Tech/Shop Foreman
Associates
578 satisfied customers
Truck has loss of power. Barely do sixty miles an hour. Not
Truck has loss of power. Barely do sixty miles an hour. Not throwing a code but lightning bolt is on . What do you think that is … read more
Mike Mcmillan
Mike Mcmillan
Triage Tech/Shop Foreman
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578 satisfied customers
I am working on a 2014 Cummins ISB 6.7 the driver complained
I am working on a 2014 Cummins ISB 6.7 the driver complained about intermittent low power and surging under a load. It had several codes, 3382 (EGR data below normal), 2639 (DPF differential pressure … read more
Nich1019
Nich1019
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Vocational, Technical or Trade School
55 satisfied customers
My truck runs fine after startup until it sits and idles for
My truck runs fine after startup until it sits and idles for a hour or two then i go To drive it and it starts feeling very under powered and puffing white smoke Detroit 60 series 14L 06 frightliner C… read more
Expert
Expert
10,510 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
Triage Tech/Shop Foreman
Associates
578 satisfied customers
I have a 2014 Freightliner with a DD15 engine and DT12
I have a 2014 Freightliner with a DD15 engine and DT12 transmission. I'm looking at the parameters in DDDL, under fuel economy. Can I change the "low gear torque limiting" values to get more pulling p… read more
Expert
Expert
10,510 satisfied customers
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
Mike Mcmillan
Mike Mcmillan
Triage Tech/Shop Foreman
Associates
578 satisfied customers
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
Mike Mcmillan
Mike Mcmillan
Triage Tech/Shop Foreman
Associates
578 satisfied customers
We have a 2009 Mack Granite GU813 with a MP7 engine. The
Hi there We have a 2009 Mack Granite GU813 with a MP7 engine. The truck initially had an egr valve fault code when we went out to it first. The truck has low power and had a DPF delete. The only activ… read more
Mike Mcmillan
Mike Mcmillan
Triage Tech/Shop Foreman
Associates
578 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
14,627 satisfied customers
I'm not familiar with Mack engines; looking at a used 2007
I'm not familiar with Mack engines; looking at a used 2007 CHN613 with a 460hp VMAC EECU Motor. Not sure what the VMAC EECU is, or reliabilty - any help would be appreciated. … read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
14,627 satisfied customers
I have 500 isx. Need more power pulling mountains. Or large
I have 500 isx. Need more power pulling mountains. Or large hills. Seems to pull down fast. Had a egr and def delete done but doesn't have power I think it should have … read more
Jeremy
Jeremy
Certified Truck/Bus Technician
Associate Degree
2,756 satisfied customers
Low power with slow foot throttle response with empty truck, what comm
Low power with slow foot throttle response with empty truck, what common items can cause this condition?… read more
Andy
Andy
truck /coach technician
Vocational, Technical or Trade School
214 satisfied customers
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
Jeremy
Jeremy
Certified Truck/Bus Technician
Associate Degree
2,756 satisfied customers
I have an 07 Sterling with a om926la 330 hp engine that is
I have an 07 Sterling with a om926la 330 hp engine that is blown. Will an engine out of an 08 truck fit? or will all of the emmissions be different? I believe both are EGR engines.… read more
Wayne
Wayne
Journeyman
Vocational, Technical or Trade Scho
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I have 2 Mack trucks model ch635 powered by 330/350 hp Mack
I have 2 Mack trucks model ch635 powered by 330/350 hp Mack engines. 2004 year model. These trucks suffer from lack of HP.What can we do to increase HP? Also can we by pass the egr cooler? Thanks for … read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
14,627 satisfied customers
Looking for a gear pattern for a 1987 mack side gear. number
looking for a gear pattern for a 1987 mack side gear. number on the side gear is P0578. The pattern would be for the spline gear that runs through the center. i am making a locking differential for po… read more
Wayne
Wayne
Journeyman
Vocational, Technical or Trade Scho
5,115 satisfied customers
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Meet the Experts:

Daniel Wilson

Daniel Wilson

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Owner at DJ Wilson

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cumminsdr

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Chris (aka-Moose)

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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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