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Related Medium and Heavy Trucks Questions
I have a peterbilt 2002 379 need a wiring diagram for a/c
i have a peterbilt 2002 379 need a wiring diagram for a/c system i am having problem getting two powers at the low pressure switch, last 6 of the vin is 592511… read more
NicholasM1019
NicholasM1019
Diesel Technician
Vocational, Technical or Trade School
10 satisfied customers
Where's the fuse located on 2001 peterbilt 379 that powers
Where's the fuse located on 2001 peterbilt 379 that powers the 6 pin diagnostics port ? … read more
NicholasM1019
NicholasM1019
Diesel Technician
Vocational, Technical or Trade School
10 satisfied customers
I have a 1996 peterbilt 379 that the AC is not working. it
I have a 1996 peterbilt 379 that the AC is not working. it seems like the system is fully charged but the compressor will not engage .I checked all fuses and relays all are fine. the switches on the a… read more
TimothyC1019
TimothyC1019
Lead Diesel Mechanic
High School diploma
I am working on a 2000 Peterbilt 379 keep blowing fuse on rh
Hello experts my name is ***** ***** I am working on a 2000 Peterbilt 379 keep blowing fuse on rh side of panel second one down acc sw no gauges work or alarms I have a hard short somewhere I need a w… read more
Don - Mo Lurch
Don - Mo Lurch
Owner
Vocational, Technical or Trade Scho
11,510 satisfied customers
I have a 2000 379 Peterbilt. When I bought it, the brake
I have a 2000 379 Peterbilt. When I bought it, the brake lights were not working. There's four wires coming from the tractor. I bought a light panel. Each side has three wires. I'm trying to figure ou… read more
Andy
Andy
Truck Diagnostic Technician
Vocational, Technical or Trade School
2,813 satisfied customers
I have a 97 379 I keep blowing the fuse that runs the fan
I have a 97 379 I keep blowing the fuse that runs the fan voltage tack, odometer, and accessory … read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
4,737 satisfied customers
I have a1995 379 series pete, one day my speedo temp, fuel
hello i have a1995 379 series pete, one day my speedo temp, fuel tach and volt gauges stopped working , found a blown fuse replaced fuse mile down the road it blows again now i have still no gauges an… read more
Wayne
Wayne
Journeyman
Vocational, Technical or Trade Scho
4,023 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
I have a 1999 peterbilt when I turn the ignition switch off
I have a 1999 peterbilt when I turn the ignition switch off it only shuts off engine and stereo, heater and low oil pressure warning do not turn off … read more
Mike Mcmillan
Mike Mcmillan
Triage Tech/Shop Foreman
Associates
442 satisfied customers
I really hope u can help me. I have a 1995 379 Peterbilt
I really hope u can help me. I have a 1995 379 Peterbilt that keeps blowing the SW ACC fuse at the top right of the fuse box facing it. I know the speedometer and the voltage gauge runs off of it cuz … read more
Jeremy
Jeremy
Certified Truck/Bus Technician
Associate Degree
2,740 satisfied customers
2004 379 peterbilt c13 blows fuse for volt gage tack &
2004 379 peterbilt c13 blows fuse for volt gage tack & speedometer check wire harnest all the way to fuse block can't find any bare wires I need help ? ;… read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
4,737 satisfied customers
Where is the low air pressure buzzer located on a 2009 379
Where is the low air pressure buzzer located on a 2009 379 Peterbilt? … read more
John Oliver
John Oliver
none
3 satisfied customers
Have a 2007 379 peterbilt.. no dash gauges work no .. they
have a 2007 379 peterbilt.. no dash gauges work no .. they would go off and on sometimes now nothing at all no gauges no speedometer nothing everything is balnk … read more
Jeremy
Jeremy
Certified Truck/Bus Technician
Associate Degree
2,740 satisfied customers
I keep blowing the Acc SW fuse on a Peterbilt 379 with cat
I keep blowing the Acc SW fuse on a Peterbilt 379 with cat acert 2005 it only takes out speedometer Tachometer and volt gauge cannot find the source of the problem any ideas … read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
4,737 satisfied customers
Have a 2004 peterbilt 379. There is voltage drop after it
have a 2004 peterbilt 379. There is voltage drop after it has been running for about 5 min with lights and cab equipment dimming or stopping. Engine continues to run. Replaced batteries and continues.… read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
4,737 satisfied customers
Yesterday my speedometer, odometer, voltage gauge and
Yesterday my speedometer, odometer, voltage gauge and instrument light cluster stopped working. Checked fuses and relays in fuse box as well as relay directly behind gauges. Could not resolve the prob… read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
4,737 satisfied customers
I have a 2000 379 Pete 3406 e model with a 72 pin ecm like
I have a 2000 379 Pete 3406 e model with a 72 pin ecm like a c15.66000 miles, my tachometer speedometer froze, amp gauge quit, fuel guage quit, truck dies but restarts...if you unblock ground on batte… read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
4,737 satisfied customers
I have a 2000 chevy c6500, the tachometer not the speedometer
I have a 2000 chevy c6500, the tachometer not the speedometer doesn't work. The alternator has change, the instrument cluster been rebuild and the sensor in transmission has been change. What should I… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
5,234 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

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I am ASE Master Truck Certified.

Wayne

Wayne

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4,023 satisfied customers

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

Jeremy

Jeremy

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

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cumminsdr

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Curtis B.

Curtis B.

Technician

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

Chris (aka-Moose)

Chris (aka-Moose)

Technician

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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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