Medium and Heavy Trucks

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Related Medium and Heavy Trucks Questions
Parked at truck stop turned key off now there is absolutely
Parked at truck stop turned key off now there is absolutely no power to anything in the truck. No lights no ignition nothing. But batteries work because power inverter still turns on. … read more
Nich1019
Nich1019
Diesel Technician
Vocational, Technical or Trade School
80 satisfied customers
Have 1996 Allegro bus tried to start but got nothing on
Have 1996 Allegro bus tried to start but got nothing on shift pad. Replaced TCM still nothing.. The shift pad would only work in warm weather now nothing. Any suggestions? … read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
15,100 satisfied customers
2006 Cat Accert, single turbo conversion has lots of blowby.
2006 Cat Accert, single turbo conversion has lots of blowby. Complete inframe done 375,000 miles ago, with new head. Turbo is 1 year old. Compressor is reman and 4 years old. Uses 1 gallon of oil at 8… read more
Nich1019
Nich1019
Diesel Technician
Vocational, Technical or Trade School
80 satisfied customers
2002 Peterbilt 378 Cat c12 I have power at starter but no
2002 Peterbilt 378 Cat c12 I have power at starter but no power to dashboard thinking I blew a main fuse but have No wiring diagram … read more
Nich1019
Nich1019
Diesel Technician
Vocational, Technical or Trade School
80 satisfied customers
I currently have Injector not Ok "short" on all 6 injectors.
hello, I currently have Injector not Ok "short" on all 6 injectors. I have had the truck scanned and assuming the injector driver has failed. this was a new/reman ecu and since install the truck was n… read more
Nich1019
Nich1019
Diesel Technician
Vocational, Technical or Trade School
80 satisfied customers
2005 Caterpillar acert,379 peterbilt. Just bought it.was
2005 Caterpillar acert,379 peterbilt. Just bought it.was messing with ac compressor fuse it was hot and blowing fuses without breaker in … read more
Andrew G.
Andrew G.
Heavy Truck Mechanic
Heavy Duty Equipment - Truck and Transport Mechanic
4 satisfied customers
I have a 1983 Peterbilt 350 Cummins why does the truck have
I have a 1983 Peterbilt 350 Cummins why does the truck have no power batteries are good … read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
15,100 satisfied customers
Acc fuse instantly after turning on key, is the acc fuse
Acc fuse instantly after turning on key, is the acc fuse that is powered by relay behind left dash panel … read more
Andy
Andy
truck /coach technician
Vocational, Technical or Trade School
214 satisfied customers
Cat Man, I have a CAT 6NZ23832 that wont start its in a 2001
Hi Cat Man, I have a CAT 6NZ23832 that wont start its in a 2001 Peterbilt. when I plug in my scan tool there is no communication with the ECM. I have unplugged the truck side connector of the ECM and … read more
Nich1019
Nich1019
Diesel Technician
Vocational, Technical or Trade School
80 satisfied customers
Min128 code 030 07. 6CPXH0928EBX. Thers another # NXS26319
min128 code 030 07 JA: What is the complete model and serial number of your machine? Customer: 6CPXH0928EBX JA: Are you fixing this yourself? What have you tried so far? Customer: yes JA: Anything els… read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
15,100 satisfied customers
I have a 97 Peterbilt 378. I had some welding done in the
I have a 97 Peterbilt 378. I had some welding done in the frame yesterday and the truck ran fine today. While driving today, I noticed my engine brake would only work when I pressed the brake pedal, a… read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
15,100 satisfied customers
1999 chevy c6500 with 3126 cat no start no check engine
1999 chevy c6500 with 3126 cat no start no check engine light with key cycled where is the pc fuse/ circut braker… read more
Jeremy
Jeremy
Certified Truck/Bus Technician
Associate Degree
2,756 satisfied customers
I have an 04 International 9400i with a Cummins ISX that has
I have an 04 International 9400i with a Cummins ISX that has the Cummins ICON system. The truck quit going down the highway, now with key in the off position I have power going to my gauges and the tr… read more
Wayne
Wayne
Journeyman
Vocational, Technical or Trade Scho
5,115 satisfied customers
Have a 2004 peterbilt 379 with CAT C 15 engine. There is a
have a 2004 peterbilt 379 with CAT C 15 engine. There is a broken wire in ECM harness shorting to ground. Having difficulty finding the other end. Need a wiring diagram for power from battery box to E… read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
15,100 satisfied customers
I have a 2002 W 900 with a 6 NZ 475 cat. Engine serial
I have a 2002 W 900 with a 6 NZ 475 cat. Engine serial number 6 NZ 578 75. Will crank but will not start. Check the complete fuel system it checked out. Power on pin number 70 for ecm. No power on 52 … read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
5,353 satisfied customers
2001,379 peterbilt going down road and the truck cut off lost
2001,379 peterbilt going down road and the truck cut off lost power to gauges ,have fuel,truck will spin over, fuse to ecm in battery box is good ,could it be ignition, relay?… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
5,353 satisfied customers
I have a 98 Peterbilt 378, with 3406E engine. I has the ignition
I have a 98 Peterbilt 378, with 3406E engine. I has the ignition switch, you turn it to "run", and then press a "start" button. This morning I was changing a bulb behind the gauge B panel with the tru… read more
Wayne
Wayne
Journeyman
Vocational, Technical or Trade Scho
5,115 satisfied customers
I have a 1994 375 peterbilt dump the other day when i tried
i have a 1994 375 peterbilt dump the other day when i tried to start it it did not turnover you could just hear a click come from the firewall like the old ford solinoid would make took of the starter… read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
15,100 satisfied customers
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Meet the Experts:

Daniel Wilson

Daniel Wilson

15,100 satisfied customers

Owner at DJ Wilson

Cat Man

Cat Man

Cat Engine Expert

5,353 satisfied customers

I am ASE Master Truck Certified.

Wayne

Wayne

Journeyman

5,115 satisfied customers

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

Jeremy

Jeremy

Certified Truck/Bus Technician

2,756 satisfied customers

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

Curtis B.

Curtis B.

Technician

1,947 satisfied customers

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

cumminsdr

cumminsdr

Mechanic

1,886 satisfied customers

All types of Cummins applications

Chris (aka-Moose)

Chris (aka-Moose)

Technician

641 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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