Medium and Heavy Trucks

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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
I've gotten about 10 miles and the truck just cut off on us
Hey I've gotten about 10 miles and the truck just cut off on us check engine light flashing off and on seems to seem likes it loses power for a second now truck completely won't start… read more
Mike Mcmillan
Mike Mcmillan
Triage Tech/Shop Foreman
Associates
402 satisfied customers
1999 International 4900. DT466. We received this unit from
1999 International 4900. DT466. We received this unit from another shop. They had replaced HPOP and fuel filter base. No diagnostic codes. We diagnosed bad injectors. Replaced all 6 injectors. Engine … read more
Mike Mcmillan
Mike Mcmillan
Triage Tech/Shop Foreman
Associates
402 satisfied customers
I have a cummins c8.3 300hp 1994 with the mechanical fuel
i have a cummins c8.3 300hp 1994 with the mechanical fuel pump. … read more
Eddy
Eddy
HD Truck Tech
GED
2 satisfied customers
I have a 2003 379 c15 6nz. My oil tempos at 220 with a new
I have a 2003 379 c15 6nz. My oil tempos at 220 with a new teltek gauge and sensor. My water temp shows around 220-225 when working the motor is working hard. I thought it sounds high. Have new thermo… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
5,234 satisfied customers
1997 peterbilt n14 celeste plus. 1997 peterbilt cummins n14
Chasing a problem for several years. Seems to me when I have an injector starting to miss the ecm will derate engine power.im not sure if this is a derate or just a power loss. … read more
Mike Mcmillan
Mike Mcmillan
Triage Tech/Shop Foreman
Associates
402 satisfied customers
IH 9300 semi tractor, have replaced 2 ECM's in 15 months.
IH 9300 semi tractor, have replaced 2 ECM's in 15 months. Occassionally lose engine control (truck running, but pedal appears "dead", then will recover on it's own … read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
5,234 satisfied customers
I have a 2004 international 4300 with a dt466e motor, 6
I have a 2004 international 4300 with a dt466e motor , 6 speed manual, rollback tow truck. 343000 miles (jasper replacement motor at 212000 with new injectors and reman garrett turbo) and just recentl… read more
Andy
Andy
truck /coach technician
Vocational, Technical or Trade School
207 satisfied customers
I have a Cummins l10 that won't rev up only idles,changed
Hello, I have a Cummins l10 that won't rev up only idles,changed the fuel filter and clean the screen in the PT pump. But still no change,I don't feel the fuel solenoid clicking or anything when the k… read more
spankyjr1
spankyjr1
Journeyman
Vocational, Technical or Trade Scho
2,873 satisfied customers
Have a 2011 Peterbuilt 386 with a ISX Cummins CM2250 engine
Have a 2011 Peterbuilt 386 with a ISX Cummins CM2250 engine serial number 79435106. What we are having problems with is that in only 12th or 13th gear when your pulling up a hill fuel pressure shuts o… read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
4,737 satisfied customers
I have a 1994 Kenworth with an L10 Cummins that cranks, but
I have a 1994 Kenworth with an L10 Cummins that cranks, but won't start. ENG RTD 1 relay never gets power, ENG RTD 2 relay will flutter on and off which makes the fuel shutoff solenoid turn on and off… read more
spankyjr1
spankyjr1
Journeyman
Vocational, Technical or Trade Scho
2,873 satisfied customers
Kenworth T 660 Cummins ISX series 3, purchased the truck
Kenworth T 660 Cummins ISX series 3, purchased the truck used it had approx 325000 miles. Since the beginning it has always reached water temps of 230-235f on a steep and either long or short uphill. … read more
spankyjr1
spankyjr1
Journeyman
Vocational, Technical or Trade Scho
2,873 satisfied customers
Jeremy,well i'm sadly needing to pick your brain hopefully
Hi Jeremy, well i'm sadly needing to pick your brain hopefully just one more time on the oil temp issue with my 2002 freightliner columbia...12.7LDetroit We are back up to a steady 250 deg on flat gro… read more
Jeremy
Jeremy
Certified Truck/Bus Technician
Associate Degree
2,740 satisfied customers
Ford aeromax: 1995 ford aeromax cummins m11 check fluids. fluids
1995 ford aeromax cummins m11 check fluids. fluids ok .stop engine keep goin loose accelerator down to idle .also jake is intermittent,no increase idle. sometimes no jake brake. better in cooler days.… read more
Jeremy
Jeremy
Certified Truck/Bus Technician
Associate Degree
2,740 satisfied customers
I have a 378 T/A 1991 10 wheel dump truck, M11 cummins. Truck
I have a 378 T/A 1991 10 wheel dump truck, M11 cummins. Truck runs fine when cold. as the day goes on , when coasting down hill the motor dies out. When I push down on the eccelorator, there is no res… read more
Wayne
Wayne
Journeyman
Vocational, Technical or Trade Scho
4,023 satisfied customers
I have a 1984 9000 LT Ford 350 Cummings that all at once with
I have a 1984 9000 LT Ford 350 Cummings that all at once with the heating gauge when I turned the switch on it would go pass 100 with a cold engine then after I start the fan kicks on like normal and … read more
JCTech
JCTech
Technical Specialist
Vocational, Technical or Trade Scho
352 satisfied customers
I have a 1999 Sterling L9511 tandem dump truck 10spd with a
I have a 1999 Sterling L9511 tandem dump truck 10spd with a M-11 with 200,000 miles. I'm the only driver who treats it easy. I am getting a 321 fault code. Intake pressure fault. The turbo spools up t… read more
Wayne
Wayne
Journeyman
Vocational, Technical or Trade Scho
4,023 satisfied customers
Hi! 1998 international with cummins m11 is lost power after
Hi! 1998 international with cummins m11 is lost power after an ecm was changed due to burn for unknown reason, truck is working normally, but after it gets to 180 temperature, loosing power. engine st… read more
cumminsdr
cumminsdr
Mechanic
High School or GED
1,700 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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