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
I have a 2017 40' RV on a freight liner chassis that has a
I have a 2017 40' RV on a freight liner chassis that has a imbalance temp vs the other tires. The inside rear tire was showing 135 degrees where the other were at 110-115. I ran over some tree branche… read more
Gary A.
Gary A.
Associates in Diesel Technology and Business Management
6 satisfied customers
Mike, Have 2017 VNL I-shift in the shop. Truck has
Hi Mike, Have 2017 VNL I-shift in the shop. Truck has drivability issue, when starting to drive from complete stop it stalls for 2-5 sec and starts to drive. Have active faults on Bendix EC-80 side "P… read more
Mike Mcmillan
Mike Mcmillan
Triage Tech/Shop Foreman
Associates
561 satisfied customers
KW T660 secondary and primary air gages are reading 150 psi
KW T660 secondary and primary air gages are reading 150 psi and the low air warning system is not working. how do I fix it.… read more
Gary A.
Gary A.
Associates in Diesel Technology and Business Management
6 satisfied customers
I have a 2014 CXU613 that builds air pressure and looses it
Mike I have a 2014 CXU613 that builds air pressure and looses it for no apparent reason. Changed filter and Purge Valve. No leaks anywhere from lines. It looses air while just idling with no one in th… read more
Joe Green
Joe Green
65 satisfied customers
The Low air warning light is constantly staying on even
The Low air warning light is constantly staying on even though the air pressure gauge is reading normal 120-140 air psi! This is for my 1998 KW W900L 3406E cat motor. What could be the problem?… read more
Nich1019
Nich1019
Diesel Technician
Vocational, Technical or Trade School
41 satisfied customers
ON A C15 CAT THAT HAS NO POWER. TOP SPEED IS 64 BOBTAIL AND
I AM WORKING ON A C15 CAT THAT HAS NO POWER. TOP SPEED IS 64 BOBTAIL AND IT TAKES MANY MILES TO GET THERE. ON A TEST DRIVE I NOTICED THE ECM HAD BOOST PRESSURE AT 0 AND THE MECHANICAL GAUGE I INSTALLE… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
5,353 satisfied customers
I have a truck in the shop that we have changed the
I have a truck in the shop that we have changed the thermistors on and we have evacuated and filled the system with the correct amount of Freon. to fill the system we had to jumper the clutch to make … read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
6,062 satisfied customers
My air pressure goes up to 150 psi but wont trasfer to the
My air pressure goes up to 150 psi but wont trasfer to the secondary tank … read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
6,062 satisfied customers
When I am going dow the road. I am having problem with air
When I am going dow the road. I am having problem with air pressure at 102 to 105 psi on primary tank. 105 to 110 on secondary tank.… read more
Wayne
Wayne
Journeyman
Vocational, Technical or Trade Scho
17,377 satisfied customers
I have a air pressure problem on my Mac truck. It does not
I have a air pressure problem on my Mac truck. It does not generate enough air pressure on the primary side there is a 40 pound difference between the primary and secondary and when we work the truck … read more
Mike Mcmillan
Mike Mcmillan
Triage Tech/Shop Foreman
Associates
561 satisfied customers
Freightliner Columbia 2010 with Detroit Series 60 Air drier
Freightliner Columbia 2010 with Detroit Series 60 Air drier assembly and air governor have both been replaced twice. Both primary and secondary air gauges going to 150 psi Air from air drier purges fo… read more
Mike Mcmillan
Mike Mcmillan
Triage Tech/Shop Foreman
Associates
561 satisfied customers
Peterbilt 379 with C 15 air pressure Buzzer issue,
Peterbilt 379 with C 15 air pressure Buzzer issue, suddenly started buzzing constantly unless I tap the brake pedal then it goes away for a little. P.S. The orange air gauge goes to 150 the white one … read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
6,062 satisfied customers
, I work in a small fleet maintennance shop and have come
, I work in a small fleet maintennance shop and have come across a problem with a truck we just purchased.We have a 2004 IH 4200 365vt equipped bucket truck. Our current problem is that the two air ga… read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
6,062 satisfied customers
2009 Freightliner m2 106 business class cummins isb 240 Check
2009 Freightliner m2 106 business class cummins isb 240 Check engine lights on codes are as follows. Active -1 Egr 1 valve 1 control 1 HDS J1939-ch1 SPN 2791-FMI 13 Inactive -2 AFT 1 DPF Differential … read more
Andy
Andy
truck /coach technician
Vocational, Technical or Trade School
214 satisfied customers
I have a 2009 T800 KW day cab with isx cummins Is it possable
I have a 2009 T800 KW day cab with isx cummins Is it possable to get a diagram of the compressed air system… read more
Andy
Andy
truck /coach technician
Vocational, Technical or Trade School
214 satisfied customers
I have an 09 Volvo 670 with the D13 Volvo engine. When parked
I have an 09 Volvo 670 with the D13 Volvo engine. When parked it builds air when it gets down to only 110 to 115 #. Some times it works right and goes to 100#. When driving it goes down to 105 to 110 … read more
spankyjr1
spankyjr1
Retired
Vocational, Technical or Trade Scho
420 satisfied customers
i have a 07 western star 4900fa.i have a problem with the air
i have a 07 western star 4900fa.i have a problem with the air ride cab.i release the brakes the air valve loses air,but does not exhaust through the valve… 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

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

Journeyman

17,377 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

Curtis B.

Curtis B.

Technician

1,947 satisfied customers

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

cumminsdr

cumminsdr

Mechanic

1,886 satisfied customers

All types of Cummins applications

Chris (aka-Moose)

Chris (aka-Moose)

Technician

641 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