Medium and Heavy Trucks

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Related Medium and Heavy Trucks Questions
I have a cm870 when pulling out loaded and on a hard pull it
I have a cm870 when pulling out loaded and on a hard pull it will lose power like turning the key off and back on and occasionally show code for low fuel psi and will sometimes even quit. May go days … read more
cumminsdr
cumminsdr
Mechanic
High School or GED
1,700 satisfied customers
I have a 1995 Freightliner Ft60 with Cummins 8.3l... will
I have a 1995 Freightliner Ft60 with Cummins 8.3l... will not build more than 10 pounds of boost on the road up a hill I just bought the truck. We pulled the turbo of and we closed the waste gate with… read more
Andy
Andy
truck /coach technician
Vocational, Technical or Trade School
207 satisfied customers
I rebuilt the Engine, an after rebuilt, the turbo dosent
I rebuilt the Engine, an after rebuilt, the turbo dosent work right. with engine brakes, it put out 40psi. when pulling at 1400rpm its at 30psi. and at 1500rpm its at 28psi. and at 1600rpm its at 26ps… read more
Wayne
Wayne
Journeyman
Vocational, Technical or Trade Scho
4,023 satisfied customers
My 2007 kenworth t800 with 500hp Cummins isx engine when I
My 2007 kenworth t800 with 500hp Cummins isx engine when I put my foot to the floor on the acceleration nothing happens for a few seconds then the turbo kicks in and we're off to the races. Any idea w… read more
Andy
Andy
truck /coach technician
Vocational, Technical or Trade School
207 satisfied customers
I have a 2012 Cummins ISX. We just completed an out of frame
I have a 2012 Cummins ISX. We just completed an out of frame overhaul. Motor runs great, but has a weird oil pressure situation. At start up, the oil pressure gauge goes up to about 70 psi. Stays ther… read more
Andy
Andy
truck /coach technician
Vocational, Technical or Trade School
207 satisfied customers
I have a 09 Cummins isx just did a complete overhaul and
I have a 09 Cummins isx just did a complete overhaul and just did 1st oil change after 1000 miles and oil pressure is running 30-32 psi under a load. Before rebuild it ran 38-40 psi under load until i… read more
Mike Mcmillan
Mike Mcmillan
Triage Tech/Shop Foreman
Associates
430 satisfied customers
Low oil pressure when running. I just rebuilt my Cummins isx
Second opinion] Low oil pressure when running. I just rebuilt my Cummins isx 435 sp … read more
AMANDEEP MAHERU
AMANDEEP MAHERU
1 satisfied customers
Low oil pressure when running. I just rebuilt my Cummins isx
Low oil pressure when running. I just rebuilt my Cummins isx 435 sp … read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
4,737 satisfied customers
2004 cat acert c15 Diesel engine over heats only when boost
2004 cat acert c15 Diesel engine over heats only when boost pressure reaches over 30 psi with light loads and 17 psi with heavy loads. No coolant loss or oil. Compression is good on all cylinders. Wil… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
5,234 satisfied customers
Have a 2009 isx 485 hp just had a short block with cams done
Have a 2009 isx 485 hp just had a short block with cams done everything was fine about 5000miles notice some smoke when starting the truck now after it sits I have what I believed to be oil coming out… read more
Mike Mcmillan
Mike Mcmillan
Triage Tech/Shop Foreman
Associates
430 satisfied customers
2007 ISX CM871 high exhaust temp and black smoke when foot
2007 ISX CM871 high exhaust temp and black smoke when foot in throttle. Truck seems to be down on power some. May not be but I don't think it has the power it should. Can I get some trouble shooting h… read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
4,737 satisfied customers
I have an ISX 1 EGR DPF pushes coolant out the overflow, in
i have an ISX 1 EGR DPF pushes coolant out the overflow, in last two months have replaced egr cooler and compressor and have run tests for combustion gas tests also three times, system pressure tested… read more
cumminsdr
cumminsdr
Mechanic
High School or GED
1,700 satisfied customers
Hi i have 2010 kenworth t660 with cummins isx 455hp and i have
Hi i have 2010 kenworth t660 with cummins isx 455hp and i have lov coolant level warning i take it to mechanics they check the wires change the overflow tank and the sensor but doe help… read more
Jeremy
Jeremy
Certified Truck/Bus Technician
Associate Degree
2,740 satisfied customers
i have a 2007 kenworth t800h with a 565 isx high exhaust temp
i have a 2007 kenworth t800h with a 565 isx high exhaust temp 1100 degrees 30 to 40 psi boost when under load but 5 psi when jaking down hill lot of black smoke turbo seems to hesitate then just takes… read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
4,737 satisfied customers
I have a 2013 Pete with a 500 ISX. I just had tha DPF filter cleaned out last week and th
I have a 2013 Pete with a 500 ISX. I just had tha DPF filter cleaned out last week and the next day it started regening about every 4 hours. Brought it to Cummins and they diagnosed that the turbo was… read more
cumminsdr
cumminsdr
Mechanic
High School or GED
1,700 satisfied customers
Hi I got a 07 epa 550 isx at 240k the turbo went out because
Hi I got a 07 epa 550 isx at 240k the turbo went out because of failed egr cooler. Got both replaced under warranty at rocky mountain cummins in sparks nv. My issue is ever since that repair my truck … read more
cumminsdr
cumminsdr
Mechanic
High School or GED
1,700 satisfied customers
I just had an overhaul done on a cummins isx about 700 miles
I just had an overhaul done on a cummins isx about 700 miles ago... I just noticed oil under the turbo....any ideas .????… read more
Dieselman36
Dieselman36
High School or GED
I have a 2009 kenworth T660 that is blowing blue smoke . Only
I have a 2009 kenworth T660 that is blowing blue smoke . Only seems to do it when the turbo is at 20-35psi . Also does it going down hill with the jake on . Any ideas as to what this problem is ?… read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
4,737 satisfied customers
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Meet the Experts:

Daniel Wilson

Daniel Wilson

4,737 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

1,700 satisfied customers

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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