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Related Medium and Heavy Trucks Questions
No power to fuel pump, 04 379 1XP-5D49X-3-4D835010, I turned
I turned on the fan over ride truck stoped running, let truck cool down it restarted had to turn truck off now I can not hear fuel pump … read more
Nich1019
Nich1019
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Vocational, Technical or Trade School
64 satisfied customers
2006 peterbilt 379 tri axle dump truck, cat, 15 ascert ,,was
2006 peterbilt 379 tri axle dump truck , cat, 15 ascert ,,was runnning down the interstate just fine , I flipped the cruise control switch on and the truck just died , now it will turn over but not st… read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
6,062 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
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I have a Cummins n14 celect plus. When accelerating it
I have a Cummins n14 celect plus. When accelerating it sputters really bad. … read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
6,062 satisfied customers
I have a 97 379 with an n14 it runs down the road good sets
I have a 97 379 with an n14 it runs down the road good sets on an idle good put it in gear try to take off and it dies and the fuel filter is dry … read more
Wayne
Wayne
Journeyman
Vocational, Technical or Trade Scho
5,115 satisfied customers
I have a 2005 peterbilt that originally had an isx. But
I have a 2005 peterbilt that originally had an isx. But previous owner converted it to a 6nz. It has had a die/no start issues for a few weeks but mother that he left the driver stranded. There is no … read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
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I have a 1995 pete 379 it cranks but wont start fuel filters
I have a 1995 pete 379 it cranks but wont start fuel filters are full new batteries but still wont start … read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
6,062 satisfied customers
I have a 1996 peterbilt 379 with a rebuilt N14's celect
I have a 1996 peterbilt 379 with a rebuilt N14's celect Cummins. It will not do a diagnostic code check and will not show codes on instrument panel on the dash. Last week I was experiencing no throttl… read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
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06 cummins 870 isx no power coming out of ecm for fuel lift
06 cummins 870 isx no power coming out of ecm for fuel lift pumpwhere do i check next? … read more
Mike Mcmillan
Mike Mcmillan
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I have a 2005 peterbilt 379 with a cat acert C15 in it the
I have a 2005 peterbilt 379 with a cat acert C15 in it the blower motor will not work on any speed I have gotten the multimeter out and started checking when I go to any point in the system be at the … read more
Andy
Andy
truck /coach technician
Vocational, Technical or Trade School
214 satisfied customers
I just replaced an ecm on a peterbuilt and the engine will
I just replaced an ecm on a peterbuilt and the engine will not turn over. I just had it reprogrammed today and it still will not fire,I've hooked up every machine I have to it and it's not showing me … read more
Jeremy
Jeremy
Certified Truck/Bus Technician
Associate Degree
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2002 379 pete c15 6nz cat .engine will not start without
2002 379 pete c15 6nz cat .engine will not start without either . has new fuel pump new injectors new cam and crank sensors new engine wiring harness new check valves new filter housing, new ecm. Has … read more
Edward Haniewski
Edward Haniewski
General Studies/Automotive
1 satisfied customers
I'm working on a 2007 peterbilt with a cummins isx in it.
hi, I'm working on a 2007 peterbilt with a cummins isx in it. the engine number is ***** The truck was running rough and I went to turn it off with the key and it wouldn't shut off, I tried it again w… read more
cumminsdr
cumminsdr
Mechanic
High School or GED
1,886 satisfied customers
I'm not able to build boost I have replaced turbo and turbo
I'm not able to build boost I have replaced turbo and turbo control valve . I have a active code saying the vgt driver circuit is high voltage . it is a 2005 pete with a cummins 475 … read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
6,062 satisfied customers
I have a 1990 Peterbilt with a Series 60 Detroit. All of a
I have a 1990 Peterbilt with a Series 60 Detroit. All of a sudden it won't start. It cranks good but won't fire. Any ideas? … read more
Wayne
Wayne
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Vocational, Technical or Trade Scho
5,115 satisfied customers
I have 88 Peterbilt 379 with a Cummins Big Cam IV cpl#821
I have 88 Peterbilt 379 with a Cummins Big Cam IV cpl#821 that we just replaced a cracked piston in cylinder #3, the middle head gasket, one cracked exhaust valve and one intake valve and of course di… read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
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I own a 1997 Peterbilt,379-B (short nose /hood)Cat 3406 (
I own a 1997 Peterbilt,379-B (short nose /hood) Cat 3406 ( has ECM ) 18 speed trans. Last week i had the tranny rebuilt ( truck in shop mon. Tues wed , back to work with it on Thursday.) On Friday eve… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
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My boss has a 1996 379 peterbilt with a 3406 E cat. Truck has
My boss has a 1996 379 peterbilt with a 3406 E cat. Truck has a 13 speed with 3:55 rears. The truck set for 2 years. He has a lot of $ tied up in it. The problem is they had the parameters changed in … read more
Cat Man
Cat Man
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Vocational, Technical or Trade Scho
5,353 satisfied customers
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Meet the Experts:

Daniel Wilson

Daniel Wilson

6,062 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

4,370 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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