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I have a 2009 peterbilt 387 with a 485 Cummins ,, while
I have a 2009 peterbilt 387 with a 485 Cummins ,, while driving if I hit a bump in the road,, the engine stalls for a few seconds then gets going … read more
Andy3221
Andy3221
truck /coach technician
Vocational, Technical or Trade Scho
222 satisfied customers
My heater/ac fan in the cab of my 2007 peterbilt 387 is not
Hi, my heater/ac fan in the cab of my 2007 peterbilt 387 is not working. I have checked every fuse/breaker I can find (behind glove box, in battery box, outside passenger firewall) and have put a test… read more
Jeremy
Jeremy
Certified Truck/Bus Technician
Associate Degree
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2009 Peterbilt with Cummins ISX, would like OEM wiring for
2009 Peterbilt with Cummins ISX, would like OEM wiring for Idle validation switch. I have a flash code 431. … read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
2,891 satisfied customers
I have a 2011 387 Peterbilt with a isx and the engine fan
Hi I have a 2011 387 Peterbilt with a isx and the engine fan will not shut off. T … read more
Pete
Pete
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Vocational, Technical or Trade Scho
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I have a 2013 peterbilt with an mx-13. Check engine light
I have a 2013 peterbilt with an mx-13. Check engine light comes on and the display says 2 things : EGR delta pressure DPF fuel enable actuator… read more
Jeremy
Jeremy
Certified Truck/Bus Technician
Associate Degree
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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
4,530 satisfied customers
My 2011 peterbilt 389 is having light problems. when i turn on head li
my 2011 peterbilt 389 is having light problems. when i turn on head lights it back feeds to lights on mirror. then after a minute or so head kightsd come on. this has been going on about a month. yeat… read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
2,891 satisfied customers
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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I have replaced every part of the after treatment chasing codes
I have replaced every part of the after treatment chasing codes that say the exhaust is still to dirty or that the system is regening to much. The catalyst would get a face plug on it so recently i re… read more
cumminsdr
cumminsdr
Mechanic
High School or GED
1,351 satisfied customers
DPF problems. Truck is in the shop and they want to charge
DPF problems. Truck is in the shop and they want to charge me $10,000+. Engine running rough with white smoke billowing. My haunch is it's a delta P sensor, Doser injector, and IMAP sensor. Engine is … read more
FIX-IT
FIX-IT
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I have a 2009 peterbilt 387 my oil temp has run hot and im
I have a 2009 peterbilt 387 my oil temp has run hot and im on the side of the road with the stop engine light on and the buzzer on . And its totally cooled off what should I do… read more
spankyjr1
spankyjr1
Retired
Vocational, Technical or Trade Scho
19 satisfied customers
I have a 2008 Peterbilt 387. My cruise and engine brake stopped
I have a 2008 Peterbilt 387. My cruise and engine brake stopped working. What can I do to fix it and get them going again ?… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
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2009 peterbilt 387 with isx cummins engine have check engine
2009 peterbilt 387 with isx cummins engine have check engine light but no codes I did cycle the switches and disconnected the three cables at ECM still engine light on no codes..any ideals… read more
Andy3221
Andy3221
truck /coach technician
Vocational, Technical or Trade Scho
222 satisfied customers
I have a 2005 Peterbilt 387 and occasionally it will start
I have a 2005 Peterbilt 387 and occasionally it will start flashing every gauge and light on the dash. It usually stops immediately and I regain power. Today it started blinking and the gauges went ha… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
4,530 satisfied customers
have a 2001 Peterbilt 387 10 speed cat C-12, when we go through
have a 2001 Peterbilt 387 10 speed cat C-12, when we go through a really hard rain all our tach ,speedometer,oil pressure,water temp, turbo boost. oil temps all freeze and stop working.Sometimes they … read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
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I have a 2002 387 Peterbilt with an ISX Cummins engine and
I have a 2002 387 Peterbilt with an ISX Cummins engine and a Meritor freedom line transmission. I just had the TCU on top replaced and now when I turn on the lights, my turn signal indicators light up… read more
Jeremy
Jeremy
Certified Truck/Bus Technician
Associate Degree
2,243 satisfied customers
peterbilt 587: I have a 2012 peterbilt with a 587 isx. We keep
I have a 2012 peterbilt with a 587 isx. We keep ending.up in shop because eng warning keeos coming on with a connect sev tool fault. When this happens fuel milage goes down hill. They clean the dpf fi… read more
Steve
Steve
Self Employed
High School or GED
30 satisfied customers
Peterbuilt trucks, my sons driving 2011, in the mid west.
Peterbuilt trucks, my son's driving 2011, in the mid west. He says his brakes are Squishy in the sub zero cold weather. Had it checked but found nothing, carrying 70,000lb. loads. Any Service bulletin… read more
Wayne
Wayne
Journeyman
Vocational, Technical or Trade Scho
2,892 satisfied customers
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Meet the Experts:

Daniel Wilson

Daniel Wilson

2,891 satisfied customers

Owner at DJ Wilson

Cat Man

Cat Man

Cat Engine Expert

4,530 satisfied customers

I am ASE Master Truck Certified.

Wayne

Wayne

Journeyman

2,892 satisfied customers

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

Jeremy

Jeremy

Certified Truck/Bus Technician

2,243 satisfied customers

ASE Med/HD Truck Technician, NATEF Diesel Engines and Electrical/Electronics Technician, EPA 608/609 HVAC Certified, Steering/Suspension and ABS/Brakes Technician

cumminsdr

cumminsdr

Mechanic

1,351 satisfied customers

All types of Cummins applications

Curtis B.

Curtis B.

Technician

991 satisfied customers

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

dieseldan55

dieseldan55

Contractor

74 satisfied customers

Road Service mechanic for Volvo Construction.

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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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