Medium and Heavy Trucks

Have truck repair questions? Ask an Expert

Ask an Expert,
Get an Answer ASAP!

Related Medium and Heavy Trucks Questions
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
Andy
Andy
truck /coach technician
Vocational, Technical or Trade School
254 satisfied customers
I have a Peterbilt with Cummins isx. I keep having problems
I have a Peterbilt with Cummins isx. I keep having problems with #7 injector also known as DPF fuel injector. It's been replaced 2x in a year. Last time was in the last week. I pick truck up, cranked … read more
Roy
Roy
shop foreman
Associate Degree
4,528 satisfied customers
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
2,803 satisfied customers
2009 Peterbilt with isx Cummins on insite trying to do a
2009 Peterbilt with isx Cummins on insite trying to do a stationary regen says clutch pedal is depressed just put in new clutch switch still says depressed try to bypass with jumper wire still says de… read more
FIX-IT
FIX-IT
Comercial transport technician
Vocational, Technical or Trade Scho
829 satisfied customers
Peterbilt ISX engine engine brake stopped working think it's
Peterbilt ISX engine engine brake stopped working think it's just a relay or fuse but do not have diagram … read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
2,803 satisfied customers
Have a Cummins isx in a 2009 Pete just replaced the
Have a Cummins isx in a 2009 Pete just replaced the injectors & it still has bubbles in the water fuel separator filter & runs doggy … read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
2,803 satisfied customers
I have a Peterbilt truck model 387 year 2009 with an
Good afternoon, I have a Peterbilt truck model 387 year 2009 with an automatic transmission (Eton) that don't want to shift tears… read more
Wayne
Wayne
Journeyman
Vocational, Technical or Trade Scho
2,892 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
9,605 satisfied customers
I got A 2011 387 PETERBILT AND THE CHECK Engine is on been
I got A 2011 387 PETERBILT AND THE CHECK Engine is on been the shop every month I had it .every time they fix go down the road 300 miles the light comes back on… read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
2,803 satisfied customers
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
697 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
9,605 satisfied customers
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
Andy
Andy
truck /coach technician
Vocational, Technical or Trade School
254 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
9,605 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
9,605 satisfied customers
I drive a 2008 Peterbilt 387 and all parking lights...except
I drive a 2008 Peterbilt 387 and all parking lights...except 1 (the one on the drivers side front headlight) work. I changed out the bulb, and it still does not work. The hazard lights are the same wa… read more
Pete
Pete
Automotive Diagnostic Specialist
General auto certifications
30,359 satisfied customers
i have a 03 peterbilt 387 all my red lights are on on the dash
i have a 03 peterbilt 387 all my red lights are on on the dash and gauges are jumping back and forth but truck runs and drives perfectly fine. any suggestions… read more
Toby
Toby
Vocational, Technical or Trade Scho
107 satisfied customers
I have a 2001 Peterbilt 387 and the abs light is on. Plugged
I have a 2001 Peterbilt 387 and the abs light is on. Plugged in a diagnostics reader and its flashing 4 and then 3. I'm wondering if this truck is supposed to have 4 sensors or 6 sensor? Also how can … read more
FIX-IT
FIX-IT
Comercial transport technician
Vocational, Technical or Trade Scho
829 satisfied customers
I have a 2005 387 peterbilt that will not start only some times.
I have a 2005 387 peterbilt that will not start only some times. I have replaced the batteries -starter-selnoids and not sure where to go from here?… read more
cumminsdr
cumminsdr
Mechanic
High School or GED
1,351 satisfied customers
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.

JustAnswer in the News:

Ask-a-doc Web sites: If you've got a quick question, you can try to get an answer from sites that say they have various specialists on hand to give quick answers... Justanswer.com.
JustAnswer.com...has seen a spike since October in legal questions from readers about layoffs, unemployment and severance.
Web sites like justanswer.com/legal
...leave nothing to chance.
Traffic on JustAnswer rose 14 percent...and had nearly 400,000 page views in 30 days...inquiries related to stress, high blood pressure, drinking and heart pain jumped 33 percent.
Tory Johnson, GMA Workplace Contributor, discusses work-from-home jobs, such as JustAnswer in which verified Experts answer people’s questions.
I will tell you that...the things you have to go through to be an Expert are quite rigorous.

What Customers are Saying:

Wonderful service, prompt, efficient, and accurate. Couldn't have asked for more. I cannot thank you enough for your help.

Mary C.Freshfield, Liverpool, UK

This expert is wonderful. They truly know what they are talking about, and they actually care about you. They really helped put my nerves at ease. Thank you so much!!!!

AlexLos Angeles, CA

Thank you for all your help. It is nice to know that this service is here for people like myself, who need answers fast and are not sure who to consult.

GPHesperia, CA

I couldn't be more satisfied! This is the site I will always come to when I need a second opinion.

JustinKernersville, NC

Just let me say that this encounter has been entirely professional and most helpful. I liked that I could ask additional questions and get answered in a very short turn around.

EstherWoodstock, NY

Thank you so much for taking your time and knowledge to support my concerns. Not only did you answer my questions, you even took it a step further with replying with more pertinent information I needed to know.

RobinElkton, Maryland

He answered my question promptly and gave me accurate, detailed information. If all of your experts are half as good, you have a great thing going here.

DianeDallas, TX

< Previous | Next >

Meet the Experts:

Daniel Wilson

Daniel Wilson

2,803 satisfied customers

Owner at DJ Wilson

Cat Man

Cat Man

Cat Engine Expert

9,605 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.

< Previous | Next >

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.

Show MoreShow Less

Ask Your Question

x