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
No brake lights on 1992 mack ch 600. Where is brake switch
No brake lights on 1992 mack ch 600. Where is brake switch located? … read more
TomcM28
TomcM28
Owner
Associates
Mack 2014 pennicle mp8 engine approx 200k miles dump truck.
Mack 2014 pennicle mp8 engine approx 200k miles dump truck.Power leash engine brake started cutting in & out under load rocking the engine trans & cab, like a truck with death wobble.I can recreate it… read more
Mike Mcmillan
Mike Mcmillan
Triage Tech/Shop Foreman
Associates
442 satisfied customers
We 2011 Mack cxu613 have mdrive code Mid 130. Psid 23. Fmi
Second opinion] We 2011 Mack cxu613 have mdrive code Mid 130. Psid 23. Fmi 12. Has new clutch new clutch activator and solenoid valve box on side of trans. The is the code on the Mack dash. There are … read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
4,737 satisfied customers
I have a 2007 Mack CHN 613 with a 427 E7 engine and the
I have a 2007 Mack CHN 613 with a 427 E7 engine and the engine temp is running next to red line under a load, when at rest the temp lowers to normal. The water temperature appears to be running a litt… read more
Bradey V
Bradey V
Certificate
No trailer lights on 2012 389 Pete... Paccar, Yes..no fire
It's not the brake light switch or at least the tractor brake lights are working… read more
Wayne
Wayne
Journeyman
Vocational, Technical or Trade Scho
4,023 satisfied customers
It has no brake lights or turn signals. 1995 Mack RD688S
yes, I have checked the fuses they are all good. I have hot to the turn signal relay and hot on the truck harness side where it plugs into the signal stat I have no hot at the flasher … read more
Mike Mcmillan
Mike Mcmillan
Triage Tech/Shop Foreman
Associates
442 satisfied customers
1998 western star that has only heat in cab most of time. we
1998 western star that has only heat in cab most of time. we have replaced the complete ac/heat control module in cab and also the air over electric valve that is plumbed in heater lines outside of ca… read more
Mike Mcmillan
Mike Mcmillan
Triage Tech/Shop Foreman
Associates
442 satisfied customers
WORKING ON A 2019 HINO 268A cab and chasis truck. need to
WORKING ON A 2019 HINO 268A cab and chasis truck. need to find a stop light circuit that will become 12 volt when brake pedal is pressed. where can I find this circuit? … read more
Wayne
Wayne
Journeyman
Vocational, Technical or Trade Scho
4,023 satisfied customers
I have a freightliner cascadia Vin#: 1FUJGLDV4CSBT8863.
Good evening I have a freightliner cascadia Vin#: 1FUJGLDV4CSBT8863. truck is giving me problems at first problem was intermittent and now it is constant, A/C is not working, at the same time the wipe… read more
Roy Belding
Roy Belding
7,602 satisfied customers
I have a 2005 Kenworth t800 with a Cummins ISX. The engine
I have a 2005 Kenworth t800 with a Cummins ISX. The engine brake and cruise control are not working. The clutch switch was broken so we replaced it. The engine brake on off switch was intermittent and… read more
Mike Mcmillan
Mike Mcmillan
Triage Tech/Shop Foreman
Associates
442 satisfied customers
690. Cruise control will not work. This truck is used in a
690. Cruise control will not work. This truck is used in a oil field application and the cruise control is used to idle the truck up and down during use of equipment on location. It has cruise control… read more
Jeremy
Jeremy
Certified Truck/Bus Technician
Associate Degree
4,361 satisfied customers
Right side brake light does not work turn signal does. 2005
right side brake light does not work turn signal does … read more
Andy
Andy
truck /coach technician
Vocational, Technical or Trade School
210 satisfied customers
Looking expert 1999 mack big truck a/c system.a/c clutch
looking for a expert for a 1999 mack big truck for the a/c system.a/c clutch will not kick in it dont have power.i checked the thermostat in the cab its not .that need to know how to check the block w… read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
4,737 satisfied customers
No clearance lts on 2000 ch mack no power to switch when I
no clearance lts on 2000 ch mack no power to switch when I give it power middle spade has juice bottom spade is grouded out… read more
Pete
Pete
Automotive Diagnostic Specialist
General auto certifications
36,055 satisfied customers
Hey spanky its roland again hopefully you can help me i have
Hey spanky its roland again hopefully you can help me i have a 1996 ford aeromax with a 11.1L detriot. seems i dont have power coming out of the junction box on the cab for the trailer brake lights. i… read more
spankyjr1
spankyjr1
Retired
Vocational, Technical or Trade Scho
420 satisfied customers
I have an 2000 Kenworth W900L and yesterday I lost taillights
I have an 2000 Kenworth W900L and yesterday I lost taillights on my trailer. Still have them on my tractor. Tried finding a fuse labeled "TRL STOP" as this has been a problem in my 2007 KW T600 and ch… read more
spankyjr1
spankyjr1
Retired
Vocational, Technical or Trade Scho
420 satisfied customers
I have a 99 Mack ch612 with E7 engine. Cannot get cruise control
I have a 99' Mack ch612 with E7 engine. Cannot get cruise control to work when using aux pto. Electrical fault code pid84,sid142,fmi8 is what comes up. This truck is a permanent fixture being used as … read more
spankyjr1
spankyjr1
Retired
Vocational, Technical or Trade Scho
420 satisfied customers
Have a 2001 MACK RD690, back up lights n alarm stopped working,
Have a 2001 MACK RD690, back up lights n alarm stopped working, not sure where reverse light switch is or what else to look for… read more
Jim
Jim
Diesel tech.
212 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

4,023 satisfied customers

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

Jeremy

Jeremy

Certified Truck/Bus Technician

4,361 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