Medium and Heavy Trucks

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Related Medium and Heavy Trucks Questions
I have a 07 387 Peterbilt with a Eaton Fuller 10 speed
Hello I have a 07 387 Peterbilt with a Eaton Fuller 10 speed automatic trans. I had a tractor protection valve replaced now when pressing the brake to select a gear it will not go to geta … read more
Justin
Justin
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Vocational, Technical or Trade School
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Need headlight wiring diagram and fuse locations for 2008
need headlight wiring diagram and fuse locations for 2008 peterbilt 387 … read more
Nich1019
Nich1019
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Vocational, Technical or Trade School
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I already paid my subscription I need some more help. On the
Okay I already paid my subscription I need some more help … read more
Mike Mcmillan
Mike Mcmillan
Triage Tech/Shop Foreman
Associates
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I have a 2005 Peterbilt 387 and the brake lights on the
I have a 2005 Peterbilt 387 and the brake lights on the trailer are not working. All the other lights work. … read more
Nich1019
Nich1019
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Vocational, Technical or Trade School
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2009 Peterbilt 387 engine fan turns on for a short time and
2009 Peterbilt 387 engine fan turns on for a short time and turns off when driving in weather.The water temperature is at 180 and its cool outside. … read more
Wayne
Wayne
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Vocational, Technical or Trade Scho
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2009 peterbilt 387 a/c quit. no power to switch on dash.
2009 peterbilt 387 a/c quit. no power to switch on dash … read more
Andy
Andy
truck /coach technician
Vocational, Technical or Trade School
214 satisfied customers
I have a flash code 95 on 2007 C15. Called a shop & they
I have a flash code 95 on 2007 C15. Called a shop & they could not identify that code. ???? … read more
Cat Man
Cat Man
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Vocational, Technical or Trade Scho
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I need to know the switch # 1 position of the service brake
i need to know the switch # 1 position of the service brake pedal in peterbilt 369 and 387. the switch is on. … read more
Daniel Wilson
Daniel Wilson
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My speed ometer jumps all the time. Idling or running down
Hello. My speed ometer jumps all the time. Idling or running down the road. Already changed the speed ometer and the speed sensor to no avail. Please help.… read more
Daniel Wilson
Daniel Wilson
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I blew a fuse on cigarette plug in front dash. Where is the
I blew a fuse on cigarette plug in front dash. Where is the fuse located? … read more
Aaron Evans
Aaron Evans
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Got a 06 Peterbilt 387 Pacer motor the dash lights blink on
Got a 06 Peterbilt 387 Pacer motor the dash lights blink on and off like it's in limp mode … read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
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On a 2005 387 peterbilt C15 cat i lost jake brakes
On a 2005 387 peterbilt C15 cat i lost jake brakes and cruise Do you have a wiring diagram of this circuit?… read more
Wayne
Wayne
Journeyman
Vocational, Technical or Trade Scho
5,115 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
6,062 satisfied customers
I have a 2005 387 Peterbilt. With. no running / marker
Hi I have a 2005 387 Peterbilt. With. no running / marker lights to the trailer is there a separate fuse/ relay for this circuit? if so were is it located? P.S.all the lights on the truck work… read more
Jeremy
Jeremy
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When drivers door is opened and closed it will shut off. Do
When drivers door is opened and closed it will shut off . Do you have any ideas of what the problem would be. It is a 387 Peterbilt 2005 has a c15 Cat motor.… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
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Good Day Gentlemen!, I could really use some help. We have a
Good Day Gentlemen!, I could really use some help. We have a 09/2006 Peterbilt Model 387. Vin 1XP-7DB9X-3-7D664907, C15 engine ESN NXS06878. The truck was towed in with ( according to the customer) a … read more
Jeremy
Jeremy
Certified Truck/Bus Technician
Associate Degree
2,756 satisfied customers
I have a C-13 Acert in a 2007 Peterbilt 387. I am getting a
I have a C-13 Acert in a 2007 Peterbilt 387. I am getting a 2949-7 Check Engine Code, I also have no Jake Brakes or Cruise. I pulled the Valve cover and noticed when cold cylinders 1,3,5 are dropping … read more
Cat Man
Cat Man
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Vocational, Technical or Trade Scho
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I have 07 Pete 387 c15 cat wont start. We have check ECM
I have 07 Pete 387 c15 cat won't start. We have check ECM . It does'nt have any power to connections #52and#53 we can't find a fuse or a fuse link anywhere do you know where the fuse is located.… read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
6,062 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

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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

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Curtis B.

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cumminsdr

cumminsdr

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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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