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Related Medium and Heavy Trucks Questions
I have a 94 Pete 379 with 3406B CAT motor, it has a
I have a 94 Pete 379 with 3406B CAT motor , it has a mechanical fuel pump , is it possible to install a cruise control on the truck , and which shop could do it ? thanks… read more
Gary A.
Gary A.
Associates in Diesel Technology and Business Management
8 satisfied customers
My speedo quit working overnight. It does sweep when I turn
Hi there, My speedo quit working overnight. It does sweep when I turn on the key. I have replaced the speed sensor on the back of the transmission. Is there a fuse for just the speedometer? Where is i… read more
Joe Green
Joe Green
71 satisfied customers
1994 peterbilt N14 Celect new potentiometer sensor has 2
1994 peterbilt N14 Celect new potentiometer sensor has 2 part the one that mounts on side and the validation under that mounts have run new wires from ecm to to petal. Have calibrated have checked vol… read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
6,062 satisfied customers
Can I speak with a diese mechanic? When I type my problem
Can I speak with a diese mechanic? When I type my problem all out it's all for nothing because no one ever answers it. I have a 1997 Peterbilt 379 and I'm having problems with my cruise control… read more
TomcM28
TomcM28
Owner
Associates
14 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 got a 2000 Peterbilt 379 speedometer stopped working We
I got a 2000 Peterbilt 379 speedometer stopped working We replaced the speedometer and speed sensor on trans … read more
Mikael
Mikael
Bachelor's Degree
150 satisfied customers
I have a 98 379 that the fan wont kick on after an inframe
I have a 98 379 that the fan wont kick on after an inframe new water pump, thermostats, new sensors. On the computer it says fan is constantly on … read more
Mike Mcmillan
Mike Mcmillan
Triage Tech/Shop Foreman
Associates
591 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 Diagnostic Technician
Vocational, Technical or Trade School
3,030 satisfied customers
I have a 4 wire speed sensor. One set of wires plugs in and
I have a 4 wire speed sensor. One set of wires plugs in and goes by air cleaner on passenger side of truck. Where does the other one go … read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
6,062 satisfied customers
Speedometer doesn't work only works part of time but doesn't
Speedometer doesn't work only works part of time but doesn't read right I think short wire … read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
5,353 satisfied customers
I have a 2000 Peterbilt 379 that the speedometer quit
I have a 2000 Peterbilt 379 that the speedometer quit working a couple weeks ago. My mechanic said it has power to the back of the speedometer head that the head is probably bad. Just replaced the spe… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
5,353 satisfied customers
3406 cat engine in 379 peterbilt needs rebuilt. was
3406 cat engine in 379 peterbilt needs rebuilt. was wondering if anyone can help me figure out which one i have because it does not appear to be the arriginal engine and all the plates are not on the … read more
Wayne
Wayne
Journeyman
Vocational, Technical or Trade Scho
5,115 satisfied customers
1995 Pete 379 no speedometer Ecm shows the speed on computer
1995 Pete 379 no speedometer Ecm shows the speed on computer cruise works Can't retrieve the distance shows n/a… read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
6,062 satisfied customers
I have a 2000 Peterbit n14 engine running down the road it
I have a 2000 Peterbit n14 engine running down the road it won't go past 1500rpm if it drops below 1500 it will allow me to get to whatever speed is at 1500 more.… read more
spankyjr1
spankyjr1
Retired
Vocational, Technical or Trade Scho
420 satisfied customers
I dont get power on 2 of the 4 wires on the ECM on a N14 Celect
I dont get power on 2 of the 4 wires on the ECM on a N14 Celect Plus, in a 98 Peterbilt, how can i troubleshoot the wiring on this?… read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
6,062 satisfied customers
How can i change how much the odometer shows that i drive.
How can i change how much the odometer shows that i drive. Ive got Cummins Insite. The truck shows 6 miles per hour slower at 50 MPH… read more
Travis A. Wells
Travis A. Wells
Truck Mechanic
Associates of Applied Science
15 satisfied customers
MY 2000 379 PETERBILT QUIT RUNNING GOING DOWN THE ROAD. IT
MY 2000 379 PETERBILT QUIT RUNNING GOING DOWN THE ROAD. IT HAS A C-15 Catapiller motor which has A million miles on it.I think it is electrical because the speedometer and tach quit working as I coast… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
5,353 satisfied customers
I have a 1994 peterbilt 379 with a series 60 Detroit. I am
Hello, I have a 1994 peterbilt 379 with a series 60 Detroit. I am having cruise control problems like will not engage or it will engage then shut its self off. Any ideas? Thanks… read more
Buddy
Buddy
Diesel Technician
High School or GED
703 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

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

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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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