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 2006 freightliner think fl70 with c7 cat. Had a/c
Hello, I have a 2006 freightliner think fl70 with c7 cat. Had a/c compressor and drier replaced, but engine fan doesn't cycle with a/c on. … read more
Bradey V
Bradey V
Certificate
I have a thermo king apu on my tractor trailer and I haven't
I have a thermo king apu on my tractor trailer and I haven't been able to get it to work. It gives me this triangle, with an exclamation point in the middle and pretty much shuts down??? … read more
Wayne
Wayne
Journeyman
Vocational, Technical or Trade Scho
4,023 satisfied customers
I need an HVAC specialist for Freightliner. Coronado - VIN #
I am a shop. I have been diagnosing a bunk A/C issue. I have Mitchell 1 but because I just recently re entered the field after about 28 years I am a little lost of some of the terminology for the diagnostics to perform. … read more
timdieseltech
timdieseltech
lead diesel tech, shop owner
Vocational, Technical or Trade School
205 satisfied customers
Engine fan not coming on. It is a wiring issue. The over
Engine fan not coming on. It is a wiring issue. The over ride switch is not working either. We can make the fan come on via a secondary switch that was installed years ago … read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
4,737 satisfied customers
2007 Freightliner Century Cabin air fan not working. HVAC
2007 Freightliner Century Cabin air fan not working. HVAC Bad dash code. replaced fan controller unit … read more
Wayne
Wayne
Journeyman
Vocational, Technical or Trade Scho
4,023 satisfied customers
2000 Internation 9900 A/C doesn't work. Engine fan stays
2000 Internation 9900 A/C doesn't work. Engine fan stays engaged. When A/C works, engine fan disengages and works like it needs to. New expansion valve. New a/c module. Recharged system with 3lb. … read more
Andy
Andy
truck /coach technician
Vocational, Technical or Trade School
210 satisfied customers
2000 peterbilt 379. For the longest time fan only would
Hi 2000 peterbilt 379. For the longest time bunk fan only would operate on high speed. Other day that even quit. Put in new resistor still nothing. New fan nothing. Everything else works in bunk. … read more
Wayne
Wayne
Journeyman
Vocational, Technical or Trade Scho
4,023 satisfied customers
Tripac issue... main power light can be turned on/off on
Tripac issue... main power light can be turned on/off on control panel and nothing else illuminates and unit does not power on. Unit is on, pushed reset, checked fuses inside control unit all are ok..… read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
4,737 satisfied customers
2008 c15 cat engine fan coming on with or without ac on. Let
2008 c15 cat engine fan coming on with or without ac on … read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
5,234 satisfied customers
I have a thermo king tri pac. This is what my unit is
I have a thermo king tri pac. This is what my unit is doing,and what I have checked. My control panel lights up and I set it to run with a/c and or to charge the batteries.. The unit reads my temp set… read more
Wayne
Wayne
Journeyman
Vocational, Technical or Trade Scho
4,023 satisfied customers
I have a 2008 peterbilt 389 with a cat 6nz motor. My engine
I have a 2008 peterbilt 389 with a cat 6nz motor. My engine fan keeps turning on every 10 min and staying on for 5-10 min at a time. Coolant temperature is fine. Any idea what could be causing this?… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
5,234 satisfied customers
I have a Cat C-7 WAX38677 This unit has several codes,
Hello I have a Cat C-7 WAX38677 This unit has several codes, 173-11, 102-1, Also 108-3, 231-2. Dose any one have the diag info and advice on these… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
5,234 satisfied customers
I have a 97 Pete with 3406e 5ek. The cruse control works
I have a 97 Pete with 3406e 5ek. The cruse control works until I turn on the air conditioner. It will hold for a few seconds and then quit. It will hold a fast idle with a/c on when sitting still. Any… read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
4,737 satisfied customers
I would like to be able to change the wiring for my blower
I would like to be able to change the wiring for my bunk blower to a different set of battery's. Can I please have a wiring diagram that includes the blower fan in the bunk and the bunk HI and Low swi… read more
Jeremy
Jeremy
Certified Truck/Bus Technician
Associate Degree
4,361 satisfied customers
have a 2012 freightliner cascadia. the a/c wont blow
have a 2012 freightliner cascadia. the bunk a/c won't blow cold (but can can blow hot). Front a/c blows cold great. computer is showing following codes: SPN 523318 FMI 7--inactive aux blower motor mec… read more
Clayton
Clayton
Technician
Vocational, Technical or Trade Scho
627 satisfied customers
I have a 2001 w900 kw with a c15 475h cat engine. The problem
I have a 2001 w900 kw with a c15 475h cat engine. The problem I'm having is that the fan runs practically all the time. When it does shut off it only stays off for about 10 to 15 seconds and then come… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
5,234 satisfied customers
sensor power feed problem , 5 volt at plug for temp sensor
my fan hub working all time, put power to pin 11 at ecm : fan hub stop....need check :sensor power feed problem , 5 volt at plug for temp sensor but when plug sensor i lost the 5 volt , cat c12 : kent… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
5,234 satisfied customers
1996 pete with a 3406e. Fan will not come on when under load,
1996 pete with a 3406e. Fan will not come on when under load, the fan will cycle when stopped with brakes applied. Have changed fan stat and no difference. should kick in around 215, but will climb to… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
5,234 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