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
1995 peterbilt 379 engine cat 3406e, the engine fan dont
1995 peterbilt 379 engine cat 3406e, the engine fan dont work when engine is asking for, the fan works from the cab override switch, so the solenoid and harness from the switch work, need some diagram… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,221 satisfied customers
I have 1999 peterbilt engine fan wont come on automaticly.
Hi i have 1999 peterbilt engine fan wont come on automaticly … read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,221 satisfied customers
Cat Man, I have a C12 Cat s/n ALS00353 engine fan is staying
Cat Man,I have a C12 Cat s/n ALS00353 engine fan is staying on all the time, I do have power coming from pin 28 but it is 11.7 volts, when I put a load on it like the fan solenoid I loose voltage, I d… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,221 satisfied customers
2003 western star with a c-15 cat. engine fan runs
2003 western star with a c-15 cat. engine fan runs continuously. only 2.5 volts at fan solenoid it works properly when 12 volts are supplied manually. ecu is commanding fan on. new high pressure trans… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,221 satisfied customers
Cat man, I have a customer with a c12 cat here, s/n ALS00353
Cat man, I have a customer with a c12 cat here, s/n ALS00353 engine fan running all the time, checked all my inputs to ecm all temp sensor ok, my fan control on et says fan off, and also a/c pressure … read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,221 satisfied customers
Working on a 3406e 5ek in 1996 379 pete, eng fan running all
working on a 3406e 5ek in 1996 379 pete, eng fan running all the time, check wiring and fuses and relays all seem to b ok, on the plug that goes on the manual o/r switch in cab all the wires are hot i… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,221 satisfied customers
2007 sterling mbe 4000 check engine code 128 060 5 SID
2007 sterling mbe 4000 check engine code 128 060 5 SID auxiliary PWM driver #4 current below normal or open circuit … read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
4,737 satisfied customers
Catman, Have a problem with a 5EK not starting, not getting
Hey Catman,Have a problem with a 5EK not starting, not getting any engine speed, do not have any engine speed codes, just needing some advice Thanks… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,221 satisfied customers
I have a 2001 freightliner fl112 j98445 with a Cat c-12
Hello I have a 2001 freightliner fl112 j98445 with a Cat c-12 2ks64404. Engine cooling fan stays running all the time. So far I have manually applied air to supply on Horton clutch it disengages. No a… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,221 satisfied customers
Cat Man I have a 1Lw02597 that someone rewired the engine
Cat Man I have a 1Lw02597 that someone rewired the engine fan solenoid so that the ecm doesn't control it. Can you tell me the pin numbers on the ecm for fan control?… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,221 satisfied customers
I have a 98 sterling sn 1fdzs96w8vva39409 It has a cat 3406
I have a 98 sterling sn 1fdzs96w8vva39409 It has a cat 3406 and I cant get fan to come on unless I unplug the air control valve .… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,221 satisfied customers
1996 Kenworth W900 Fan clutch Problem the high pressure
1996 Kenworth W900 Fan clutch Problem the high pressure switch for my ac is not making the fan clutch come on and the Temp coolant sensor when it gets to 210 or even till 220 fan clutch also does not … read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,221 satisfied customers
I have a 1996 cat engine 5ek51876 3406e engine fan does not turn on @ hig temp.ECM is
HI I have a 1996 cat engine 5ek51876 3406e engine fan does not turn on @ hig temp.ECM is on. no signal from ecm to fan solenoid.Wand works with a/c on and manual switch. high temp blew head gasket can… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,221 satisfied customers
Mr. Cat Man, I'm having some trouble with the fan staying
Mr. Cat Man, I'm having some trouble with the fan staying on, on a C12. My ESN is MBL01285. I've checked the fan clutch and it seems to be working properly. Can you tell me anything about this circuit… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,221 satisfied customers
2001 Peterbilt Model 357 with a Cat C-10 engine. Fan clutch
2001 Peterbilt Model 357 with a Cat C-10 engine. Fan clutch was locked in the on position and a new solenoid was purchased and installed. Now the issue is the solenoid is not energized and will not ki… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,221 satisfied customers
Hi I have a 1987 t 401 engine fan is staying on my son is an
Hi I have a 1987 t 401 engine fan is staying on my son is an apprentice auto sparky he bypassed the relay tested a/c switch ok the only thing that bought it of was when he bypassed relay would a scan … read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,221 satisfied customers
On a 98can pete with a 1lw 3406e the fan wont go off unless
On a 98can pete with a 1lw 3406e the fan wont go off unless i pull relay. I can run coing fan output driver test with et and relay switches and fan goes off. If i take relay out and run a/c the fan cy… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,221 satisfied customers
Hello.. Do you have the the engine fan wiring diagram for a
Hello.. Do you have the the engine fan wiring diagram for a 2007 international with a c15? Truck VIN# XXXXX engine Ser.No MXS75083… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,221 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

10,221 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

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