Medium and Heavy Trucks

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We have a Freightliner 2007 m2 business class Mercedes with
Hello pearl. We have a Freightliner 2007 m2 business class Mercedes with Allison transmission. We r having problems with it towing our newer heavier horse trailer … read more
Mike Mcmillan
Mike Mcmillan
Triage Tech/Shop Foreman
Associates
430 satisfied customers
I HAVE FREGHTLINER CASCADIA 2015 WITH DD15 GIVING CODE SPN
HI I HAVE FREGHTLINER CASCADIA 2015 WITH DD15 GIVING CODE SPN 3361/ SPN4334/ AND SPN 5246 … read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
11,834 satisfied customers
When driving between 40-50 mph front vibration mainly from
When driving between 40-50 mph front vibration mainly from the cabin, replaced ujoint behind transmission about two months ago. … read more
Mike Mcmillan
Mike Mcmillan
Triage Tech/Shop Foreman
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I have steering wandering issues, It started when I replaced
I have steering wandering issues, It started when I replaced a front broken leaf spring. While having the leaf springs replaced, I put on new Ranch 9000 shocks x 4, put on new Continental tires x 6, a… read more
Chris (aka-Moose)
Chris (aka-Moose)
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Vocational, Technical or Trade School
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I've got a 2008 Dura Star with lack of power/no power.
I've got a 2008 Dura Star with lack of power/no power. Accelerates slowly, rough idle and at it's worst the oil temp and engine temp rise above 200 degrees. idles and runs better before engine temp ge… read more
Andy
Andy
truck /coach technician
Vocational, Technical or Trade School
207 satisfied customers
I have a 2007 freightliner Columbia, and replaced the spring
I have a 2007 freightliner Columbia, and replaced the spring bushing on right rear, after that,that side is not raising to proper height! Did I do something wrong? Bought bushing from freightliner,pre… read more
Jeremy
Jeremy
Certified Truck/Bus Technician
Associate Degree
2,740 satisfied customers
ON A 50 SERIES DETROIT AND FOUND A BEARING IN THE OIL PAN
GOOD MORNING, I AM WORKING ON A 50 SERIES DETROIT AND FOUND A BEARING IN THE OIL PAN THAT APPEARS TO BE FROM ONE OF THE OIL PUMP ASSEMBLY BALANCE SHAFTS. CAN SOMEONE HELP ME WITH THE PROCEDURE OF REMO… read more
Roy Belding
Roy Belding
7,579 satisfied customers
I got Detroit engine 14.0 L with dpf was running good but
I got Detroit engine 14.0 L with dpf was running good but got compression on radiator so head was cracked and fixed counterbores rebuild w/ original parts inframe but same old injectors and turbo got … read more
Roy Belding
Roy Belding
7,579 satisfied customers
I have a 2008 international just did high-pressure oil rail
I have a 2008 international just did high-pressure oil rail seals truck is now starting on its own but has a misfire.... I had some pending codes before doing the injector seals I was wondering if you… read more
Andy
Andy
truck /coach technician
Vocational, Technical or Trade School
207 satisfied customers
Dose anybody have the calibration of the valves and
Hello dose anybody have the calibration of the valves and injectors for a Freightliner cascadia Detroit series 60 14L the last 6 of vin is AD8148 ?… read more
Roy Belding
Roy Belding
7,579 satisfied customers
I have an 07 vnl780 with an ISX. I recently, out of the blue
I have an 07 vnl780 with an ISX. I recently, out of the blue started having trouble being legal on my steer axle weight. Spec weight is 10900 lbs (bobtail). My steer axle weight is 11700 lbs with tank… read more
Jeremy
Jeremy
Certified Truck/Bus Technician
Associate Degree
2,740 satisfied customers
I have a Ford Van camper conversion and it swaying back and
I have a Ford Van camper conversion and it swaying back and forth, especially at higher speeds . It has a good and new alignment but it seems that my shop just cannot fix it> I am thing that I bet … read more
Jeremy
Jeremy
Certified Truck/Bus Technician
Associate Degree
2,740 satisfied customers
I have a 2014 cummins isx400, it has a vibration in the
I have a 2014 cummins isx400, it has a vibration in the motor, it gets really severe under a load. 1250-1350 rpm when it starts to shake violently and you let up on the throttle, it goes away for the … read more
][\][iCk0411
][\][iCk0411
Fleet Warranty Manager
Vocational, Technical or Trade School
5 satisfied customers
2007 mack day cab is shaking bad in the front end, tried
2007 mack day cab is shaking bad in the front end, tried everything balance and rotate front tires, same with the back, checked drive line, the load leveler, back bushings, etc and can't find anything… read more
Wayne
Wayne
Journeyman
Vocational, Technical or Trade Scho
4,023 satisfied customers
yes I have a 2011 QSB with no codes will not start. have 350
yes I have a 2011 QSB with no codes will not start. have 350 rmp while cranking 7500 lbs of fuel pressure cranking. no air in fuel system. engine start of a spit second then dies. if you continue to c… read more
cumminsdr
cumminsdr
Mechanic
High School or GED
1,700 satisfied customers
Hi Ive got a freightliner argosy 2007 with airliner suspension.
Hi Ive got a freightliner argosy 2007 with airliner suspension. One random day the rear air bags just pumped up. Got height control valve replaced but same problem, lowered the valve to original heigh… read more
spankyjr1
spankyjr1
Retired
Vocational, Technical or Trade Scho
420 satisfied customers
I have a 04 Columbia, Freightliner, Mercedes engine, changed
I have a 04 Columbia, Freightliner, Mercedes engine, changed filters, looked at coolant/oil level. It was working fine then, blaaamo! No starting. Fires a little on ether.… read more
spankyjr1
spankyjr1
Retired
Vocational, Technical or Trade Scho
420 satisfied customers
2006 IH class 7 33000 lb. Truck front end shakes bad at 45-55
2006 IH class 7 33000 lb. Truck front end shakes bad at 45-55 mph. Tries,rims,,brakes ,drums, steering box, tie rods,king pins,have been replaced. Front tires have been balanced on the truck ,off the … read more
Andy
Andy
truck /coach technician
Vocational, Technical or Trade School
207 satisfied customers
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Meet the Experts:

Daniel Wilson

Daniel Wilson

11,834 satisfied customers

Owner at DJ Wilson

Cat Man

Cat Man

Cat Engine Expert

5,234 satisfied customers

I am ASE Master Truck Certified.

Wayne

Wayne

Journeyman

4,023 satisfied customers

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

Jeremy

Jeremy

Certified Truck/Bus Technician

2,740 satisfied customers

ASE Med/HD Truck Technician, NATEF Diesel Engines and Electrical/Electronics Technician, Network Engineer specializing in CAN faults, Aftertertreatment, and vehicle communications

cumminsdr

cumminsdr

Mechanic

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All types of Cummins applications

Curtis B.

Curtis B.

Technician

1,571 satisfied customers

Technician turned service manager on multiple lines of trucks and engines, used in industry.

Chris (aka-Moose)

Chris (aka-Moose)

Technician

353 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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