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Related Medium and Heavy Trucks Questions
Boost reading on scanner is 31.872 but mechanical gauge goes
Boost reading on scanner is 31.872 but mechanical gauge goes up to 39 psi … read more
Wayne
Wayne
Journeyman
Vocational, Technical or Trade Scho
4,023 satisfied customers
We have a older GM white Volvo semi with a big Cummins in it
We have a older GM white Volvo semi with a big Cummins in it we have spent a fortune on this engine just ran it 6000 miles ran perfect driving from Oregon to Arizona driving fine and also in complete … read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
4,737 satisfied customers
I have a 1994 Kenworth W 900 L with a 98 3406E. I have no
I have a 1994 Kenworth W 900 L with a 98 3406E. I have no knowledge of any history of the truck but the engine has 1,800,000 miles on it and the transmission is a 15 over. In the beginning the truck w… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
5,234 satisfied customers
When I need to address inclines my truck loses power. I have
When I need to address inclines my truck loses power … read more
Jeremy
Jeremy
Certified Truck/Bus Technician
Associate Degree
2,740 satisfied customers
We have a 2004 mandaly RV with a commins engine and have
We have a 2004 mandaly RV with a commins engine and have been having continues issues with it not running when we take it out on a trip. Last year o to we had to replace the fuel lift pump and fuel li… read more
Curtis B.
Curtis B.
Technician
Associate Degree
38,537 satisfied customers
I have a 05 kw with a cummins ISM it generally runs fine
I have a 05 kw with a cummins ISM it generally runs fine until you start going up hill under a load then it bogs down real bad and blows heavy black smoke then it clears up and takes off regaining ful… read more
cumminsdr
cumminsdr
Mechanic
High School or GED
1,700 satisfied customers
Cummins 400 ISl Oil Spray Just picked motorhome up from
Cummins 400 ISl Oil Spray Just picked motorhome up from repair shop after: air dryer filter replaced, turbocharger replaced, new oil, oil filter, air filter and front cover resealed. Drove 25 miles an… read more
cumminsdr
cumminsdr
Mechanic
High School or GED
1,700 satisfied customers
I have a Cummins ISC 275HP engine in my motorhome. While
I have a Cummins ISC 275HP engine in my motorhome. While driving the amber engine light and bell came on momentarily...and the the red stop engine light also blinked on. No loss of power or anything..… read more
FIX-IT
FIX-IT
Comercial transport technician
Vocational, Technical or Trade Scho
829 satisfied customers
1990 Detroit Diesel 8.2 turbo won't go over 35 , sat without
1990 Detroit Diesel 8.2 turbo won't go over 35 , sat for year without starting , changed fuel filters that's it.… read more
John Oliver
John Oliver
none
3 satisfied customers
I have a 99 mack the came into my shop missing on cylinder
I have a 99 mack the came into my shop missing on cylinder number 5 after it warms up replaced injector and unit on that cylinder and is still the same thing will miss after it gets hot check the volt… read more
Jeremy
Jeremy
Certified Truck/Bus Technician
Associate Degree
2,740 satisfied customers
I just bought a 2002 Monaco Diesel Pusher with a Cummins Turbo
I just bought a 2002 Monaco Diesel Pusher with a Cummins Turbo Motor, but I noticed there was no boost pressure, What could cause that? 29 K miles on the motor… read more
Andy
Andy
truck /coach technician
Vocational, Technical or Trade School
207 satisfied customers
3126 cat 1998. Went on vacation. Live at about 300 ft above
3126 cat 1998. Went on vacation. Live at about 300 ft above sea level. We took the motor home to about 9000 ft. Stayed a few days. Motorhome was parked for5 days. Day 6 we took the motorhome towing ou… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
5,234 satisfied customers
I was curious what the normal max boost pressure on a 2006
I was curious what the normal max boost pressure on a 2006 12.7 Detroit 60 series? I have boost gauge in truck and it maxes out at 45 psi at 1500rpm. The truck also runs outta power going up hills mph… read more
Jeremy
Jeremy
Certified Truck/Bus Technician
Associate Degree
2,740 satisfied customers
I have a 2001 Monaco Diplomat Motorhome with a Cummins 330hp
I have a 2001 Monaco Diplomat Motorhome with a Cummins 330hp ISC. I have a very random issue with the motor. Sometimes, when I remove my foot from the gas pedal, I lose my boost. When this occurs, pre… read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
4,737 satisfied customers
I have a 2003 350 cummins ISC engine in a 2003 freightline. The power is find from dead s
I have a 2003 350 cummins ISC engine in a 2003 freightline. The power is find from dead start \until around 40/45 miles per hour, changing from 4th to 5 gear, then motor cuts-out/shutters and check en… read more
Andy
Andy
truck /coach technician
Vocational, Technical or Trade School
207 satisfied customers
Motorhome with Cummins pusher ISB6.7L CM2150. Warning light
Motorhome with Cummins pusher ISB6.7L CM2150. Warning light on for Aftertreatment Diesel Particulate Filter Lamp. Loses power on hills. Is there a switch to regen or is this a shop item?… read more
Joe
Joe
Service Technician
Associate Degree
822 satisfied customers
I have a 92 l10 cummins that when loaded has been losing power
I have a 92 l10 cummins that when loaded has been losing power on hills, sometimes a little skip and finally quits on me. The truck seems to be starving for fuel but right before it quits the stop eng… read more
spankyjr1
spankyjr1
Retired
Vocational, Technical or Trade Scho
420 satisfied customers
isuzu nrr: Isuzu nrr diesel truck loses power climbing hills
Isuzu nrr diesel truck loses power climbing hills and service engine soon light comes on. truck drives like a turtle after....shut engine off.. wait a minute .restart... engine takes off ike normal fo… read more
spankyjr1
spankyjr1
Retired
Vocational, Technical or Trade Scho
420 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

38,537 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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