Medium and Heavy Trucks

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Related Medium and Heavy Trucks Questions
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
4,023 satisfied customers
I bought a used 2005 peterbilt 379 with a twin turbo c15
i bought a used 2005 peterbilt 379 with a twin turbo c15 truck drove fine home but when i hooked to a trailer the truck has no pulling power it did have a code in it for a intake valve actuator and i … read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
5,234 satisfied customers
I have a C15 cat 05 peterbilt I've lost 5 to 8 lb of oil
I have a C15 cat 05 peterbilt I've lost 5 to 8 lb of oil pressure and can't find it put a new oil sending unit and tried to put a manual gauge to see if it was right can't find the right pass used to … read more
NicholasM1019
NicholasM1019
Diesel Technician
Vocational, Technical or Trade School
10 satisfied customers
C15 fuel tanks not equalizing, I changed both the return
C15 fuel tanks not equalizing, I changed both the return splitter and the draw splitter and still no equalization. This started when I noticed a leak by the fuel transfer pump....could that be the pro… read more
NicholasM1019
NicholasM1019
Diesel Technician
Vocational, Technical or Trade School
10 satisfied customers
Both the water temp and oil temp gauges just stay at about
Both the water temp and oil temp gauges just stay at about 140 degrees whether the key is on or not. … read more
BrentR718
BrentR718
9 satisfied customers
I have a 2003 c12 in a Peterbilt. The driver said that it
I have a 2003 c12 in a Peterbilt. The driver said that it lost power and died once. He got it going again and drove it to the job site. I changed the primer pump … read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
5,234 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
4,737 satisfied customers
HAVE 2001 PETERBILT 379 WITH C-15 ENGINE WENT TO START THIS
HAVE 2001 PETERBILT 379 WITH C-15 ENGINE WENT TO START THIS AFTERNOON, TURNS OVER FINE BUT WON'T START, SOUNDS … read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
5,234 satisfied customers
It only starts on ether, Peterbilt 379 acert c13. Replace
it only starts on ether, JA: What's the make/model/year of your truck? Engine type? Customer: peterbilt 379 acert c13 JA: Are you fixing your truck yourself? What have you tried so far? Customer: repl… read more
Drue Casey
Drue Casey
Heavy Duty Diesel Mechanic
Vocational, Technical or Trade School
I have a peterbilt 1996. The truck goes not start. only
I have a peterbilt 1996. The truck goes not start. only start with starting fluid. if it does not accelerate it goes off. what could be the problem? what can I do to fix it?… read more
Wayne
Wayne
Journeyman
Vocational, Technical or Trade Scho
4,023 satisfied customers
3406 e loses prime when changing fuel filters. 2000 379
replaced what i thought was a check valve in secondary filter housing.the valve goes in from the bottom and uses a 1 " wrench . theres another valve that also uses a 1" wrench that goes in from side that has a ball in it.which one is supposed to hold fuel to the head … read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
5,234 satisfied customers
What is the best way to remove the press fit pipe? It seems
What is the best way to remove the press fit pipe? It seems to be stuck solid. … read more
Curtis B.
Curtis B.
Technician
Associate Degree
1,571 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
442 satisfied customers
1995 Peterbilt n14 Cummins the speedometer quit put new
1995 Peterbilt n14 Cummins the speedometer quit put new sensor and gauge in still not reading checked wires and all ohm out any solution? … read more
Andy
Andy
truck /coach technician
Vocational, Technical or Trade School
210 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
4,737 satisfied customers
2007 peterbilt 379 cat 15 won't start without the help of ether.
2007 peterbilt 379 cat 15 won't start without the help of ether. The hand pump has pressure so I assume it's primed, Changed the cam shaft sensor, changed filters, No engine lights. Runs fine until yo… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
5,234 satisfied customers
i have a 1999 international with a dt466e and i have a no
i have a 1999 international with a dt466e and i have a no start condition. 1. Truck will crank 2. no actual icp pressure but has desired pressure 3. oil pressure show on dash but not on computer until… read more
Andy
Andy
truck /coach technician
Vocational, Technical or Trade School
210 satisfied customers
I have a DT466E engine. It died and had it towed home. It
I have a DT466E engine. It died and had it towed home. It had 0 fuel pressure at the shraeder valve. Replaced the fuel filter. It will start with ether, but will not idle and on the road will buck, if… 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

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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