Medium and Heavy Trucks

Have truck repair questions? Ask an Expert

Connect one-on-one with {0} who will answer your question

Related Medium and Heavy Trucks Questions
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
Journeyman
Vocational, Technical or Trade Scho
15,221 satisfied customers
Sleeper blower fan not working in 2009 70” Peterbilt. Has
Sleeper blower fan not working in 2009 70” Peterbilt. Has power, replaced rheostat, can ground the blower motor and blows on high only. Swapped out temp control unit no change. Installed new relay, no… read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
4,737 satisfied customers
2015 Pete 579 blower motor intermittently turns off then on.
2015 Pete 579 blower motor intermittently turns off then on. New control head, fan and wiring harness to motor. Running out of things to test/swap. … read more
Andy
Andy
truck /coach technician
Vocational, Technical or Trade School
208 satisfied customers
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
208 satisfied customers
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
208 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
2,740 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
4,737 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
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
4,737 satisfied customers
I'm not able to build boost I have replaced turbo and turbo
I'm not able to build boost I have replaced turbo and turbo control valve . I have a active code saying the vgt driver circuit is high voltage . it is a 2005 pete with a cummins 475 … read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
4,737 satisfied customers
I put on a new fan clutch and solenoid. The fan will not
I put on a new fan clutch and solenoid. The fan will not engage unless I remove the air hose going to the clutch. The manual fan switch on the dash isn't working either. I got a new ecm 3 weeks ago. … read more
Wayne
Wayne
Journeyman
Vocational, Technical or Trade Scho
15,221 satisfied customers
My fan comes on with check engine light and engine brake
My fan comes on with check engine light and engine brake quits working 09 Pete 387 425 ISX.… read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
4,737 satisfied customers
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
1,700 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
Comercial transport technician
Vocational, Technical or Trade Scho
829 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
420 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
208 satisfied customers
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
2,740 satisfied customers
I have a 2003 Peterbilt 387 with ISX Cummins, ZF meritor trans.
I have a 2003 Peterbilt 387 with ISX Cummins, ZF meritor trans. no clutch pedal. I need to know factory programed features and paremeters for the engine ECM.… read more
JANECZFJ
JANECZFJ
158 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

4,737 satisfied customers

Owner at DJ Wilson

Cat Man

Cat Man

Cat Engine Expert

5,234 satisfied customers

I am ASE Master Truck Certified.

Wayne

Wayne

Journeyman

15,221 satisfied customers

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

Jeremy

Jeremy

Certified Truck/Bus Technician

2,740 satisfied customers

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

cumminsdr

cumminsdr

Mechanic

1,700 satisfied customers

All types of Cummins applications

Curtis B.

Curtis B.

Technician

1,571 satisfied customers

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

Chris (aka-Moose)

Chris (aka-Moose)

Technician

353 satisfied customers

24 years of experience diagnosing & repairing

< 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