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 98 check engine code, and I have like a 20% loss of
Hello I have a 98 check engine code, and I have like a 20% loss of power. Is this normal with this code? Or could this be something else? … read more
NicholasM1019
NicholasM1019
Diesel Technician
Vocational, Technical or Trade School
10 satisfied customers
3406 e cat on 2000 fld 120.truck shuts off while driving or
3406 e cat on 2000 fld 120.truck shuts off while driving or idling than it starts right back up … read more
NicholasM1019
NicholasM1019
Diesel Technician
Vocational, Technical or Trade School
10 satisfied customers
Im from unitektruck repair i swpa cat c15 with detroit
hi im from unitektruck repair i swpa cat c15 with detroit without egr motor but now no continously power in ecm plug … read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
4,737 satisfied customers
2000 dt466e revs to 3000 rpm but doesn't rev pass 2000 when
2000 dt466e revs to 3000 rpm but doesn't rev pass 2000 when in gear … read more
Andy
Andy
truck /coach technician
Vocational, Technical or Trade School
210 satisfied customers
I have a 2003 Kenworth T600 with a CAT C12. Trying to put a
I have a 2003 Kenworth T600 with a CAT C12. Trying to put a eld system in through the diagnostic port. There is no power in the port. Truck starts and runs fine. Any Idea why there is no power in the … read more
Mike Mcmillan
Mike Mcmillan
Triage Tech/Shop Foreman
Associates
442 satisfied customers
I bought a 1981 Kenworth w900a model to restore, it has a
Hi, I bought a 1981 Kenworth w900a model to restore, it has a cat 3406 DITA # 92U42994, it does not have a designation ( A or B model, just DITA ) so tried to start it and it ran away wild RPM's then … read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,250 satisfied customers
I got Kenworth 2000 cat C12 engine in I'm looking for how to
I got Kenworth 2000 cat C12 engine in I'm looking for how to test inyector volts … read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,250 satisfied customers
Cat man have c-15 cat no start. Cat man kw w900 2/97 cat 5ek
yes truck quit going down road, had towed, 1 Have had ecm taken to cat, cat said bad ecm kenworth dealer programed ecm. 40 pin, installed still no start, so far have replaced engine harness, and cam sensor, have had connected to cat et. no codes, but no rpm while cranking, ( Will run on either . Have checked power on pin 6 and 4 have 12 volts, and ground #5 have used electric motor, have checked power to cam sensor, with volt meter showing 11.5 to 12 volts on two pins, but when trying with electric motor no power, have tried while cranking, also. Have tried pin 6 power to pin 29 sensor ground and have no ground. does not seem to turn injectors on. ( Note have looked at cam gear, and found a piece broken on back side, ) But I think should have rpm signals, … read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,250 satisfied customers
CATMAN is there any sensor calibrations to be done after
CATMAN is there any sensor calibrations to be done after replacing cylinder head and removing all gears to reseal rear cover? CAT 3406 - 6TS… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,250 satisfied customers
I've got a 3406 e lots of blue smoke a lot of power loss. It
I've got a 3406 e lots of blue smoke a lot of power loss. It runs good for awhile then starts missing and blue smoking. Engine was rebuilt one year ago ran fine until the last few weeks. I put all 6in… read more
Wayne
Wayne
Journeyman
Vocational, Technical or Trade Scho
4,023 satisfied customers
I had a injector go bad last week had to run engine 200
I had a injector go bad last week had to run engine 200 miles to cat to purchase a injector on way there the fuel was just dumping in cylinder when I got to cat I had accessive blowby shut engine off … read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,250 satisfied customers
Having oil blow by on a 3406e cat engine, serial # is
I am fixing it myself I have not tried anything at this point it has no loss of power does not smoke … read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,250 satisfied customers
i have a 3406e 5ek59597 and require j1939 to work put suspect
hi i have a 3406e 5ek59597 and require j1939 to work put suspect that is not in the ecu what are the 40 pin alteritives?… read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
4,737 satisfied customers
got western star with cat 3406 engine in it got issue
hello got western star with cat 3406 engine in it got issue with it the guages for oil pressure ,coolant tem,rpm e.t.c are not working the cat screen that show data also doesnt work and dash shows a l… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,250 satisfied customers
Im working on a c7 in a truck. I have 1740psi injection actuation
Im working on a c7 in a truck. I have 1740psi injection actuation pressure at idle. have changed huei pump, iap sensor, injectors, and ecm. fuel pressure is 60 at idle. truck misses bad below 2000rpm.… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,250 satisfied customers
I have a 1996 W900L with an engine retarder brake problem.
I have a 1996 W900L with an engine retarder brake problem. This unit originally had a smart wheel, but the switches has worn out and the replacement wheel is no longer available. The unit has been con… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,250 satisfied customers
Hey Spanky how are ya ? I have a 92 kenworth t 800 with a 3406
Hey Spanky how are ya ? I have a 92 kenworth t 800 with a 3406 cat . its going thru a ton of antifreeze. I have air bubles in rad and signs of water in engine oil. Oil looks normal but signs of water … read more
spankyjr1
spankyjr1
Retired
Vocational, Technical or Trade Scho
420 satisfied customers
I have a 94 kenworth t800 with 425HP 3406B cat. Serial prefix
I have a 94 kenworth t800 with 425HP 3406B cat. Serial prefix 3ZJ. I'm having a fueling or timing problem I believe. It has developed a miss and lost power. Has new nozzles . After idling for short ti… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,250 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

10,250 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