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
2004 Peterbilt 379, cat c15 MBN keep breaking the fuel
Hello 2004 Peterbilt 379 , cat c15 MBN keep breaking the fuel pressure regulator I already changed 5 of them in the past year . Also the Engine shakes and sounds rough between 900 and 1300 rpm , it so… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,252 satisfied customers
Help we are loosing water On 2006 Acert C15 cat engine in a
Help we are loosing water On 2006 Acert C15 cat engine in a 379 Peterbilt truck what could cause this I can't find the leak but it still is getting away… read more
NicholasM1019
NicholasM1019
Diesel Technician
Vocational, Technical or Trade School
10 satisfied customers
Cat man, I've read many of your diagnosis over the last year
Hello Cat man, I've read many of your diagnosis over the last year and want to thank you for the information and the money I've saved. … read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,252 satisfied customers
98 Pete n 14 select. it's slow about building air .will not
98 Pete n 14 select. it's slow about building air .will not build air at idle. Replaced dyrer.and governor. Pulled the intake pipe loose and the compressor is sucking air .pulled the main line off com… read more
Wayne
Wayne
Journeyman
Vocational, Technical or Trade Scho
4,023 satisfied customers
I have a 2000 year 6NZ C15 @ 550/1850 with 800,000 on out of
I have a 2000 year 6NZ C15 @ 550/1850 with 800,000 on out of frame rebuild. I am doing a ground up restoration on my 2001 Western Star, owned & operated for 16 years. I wanted to upgrade to C18 specs.… read more
Bradey V
Bradey V
Certificate
What's the best rpm to run a x15 high performance 606 engine
What's the best rpm to run a x15 high performance 606 engine on the road … read more
Mike Mcmillan
Mike Mcmillan
Triage Tech/Shop Foreman
Associates
442 satisfied customers
06 mxs 475 acert I wanna know if I update it to a 500 to 525
06 mxs 475 acert I wanna know if I update it to a 500 to 525 or even a 550 will I notice a big gain in power..cause everyone is telling me that in the acerts you notice no power gain in the acert beca… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,252 satisfied customers
IH 9300 semi tractor, have replaced 2 ECM's in 15 months.
IH 9300 semi tractor, have replaced 2 ECM's in 15 months. Occassionally lose engine control (truck running, but pedal appears "dead", then will recover on it's own … read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,252 satisfied customers
2006 cat c15 acert bxs or msx or nxs what will be the
hello 2006 cat c15 acert bxs or msx or nxs what will be the crankshaft blow by normal working range cold and hot , to see the life left of the engine… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,252 satisfied customers
CAT MAN, I have a C15 acert esn mxs71496. I have code 231-12
CAT MAN, I have a C15 acert esn mxs71496. I have code 231-12 active as well as 253-2. 253-2 was active for rating number and esn not programmed. I programmed both in the configuration tool but it will… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,252 satisfied customers
Can I change my c15 Ecm that is 1550 torque and 435 horse
Can I change my c15 Ecm that is 1550 torque and 435 horse with one rated at 1850 torque and 550 horse… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,252 satisfied customers
Cat Man, I has an problem with the ACERT-system at an C15 550 HP engine. Today it has
Hi Cat Man, I has an problem with the ACERT-system at an C15 550 HP engine. Today it has flash file(###) ###-#### ***** the flash file(###) ###-####remove the ACERT-system?… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,252 satisfied customers
. Just rolled 1.1 million miles on my 475 hp acert in
Hello. Just rolled 1.1 million miles on my 475 hp acert in an 05 pete 379. I bought it at 570k miles from my dads rigging company in CA. It has been a VERY reliable engine for me. I have several ???s … read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,252 satisfied customers
I have a 525celect plus 13 speed with 3.55 rears and can't get mo
I have a 525celect plus 13 speed with 3.55 rears and can't get more than 5.4mpg just wondering if I'm driving it at the wrong rpms.or am I lugging it too much… read more
Wayne
Wayne
Journeyman
Vocational, Technical or Trade Scho
4,023 satisfied customers
Good Morning, Cat Man I have an 08 Pete with a C-15
Good Morning, Cat Man I have an 08 Pete with a C-15 ESN-SDP04352. Can these engines be turned for more HP and Torque and not cause more emissions problems? If so what is the max HP and torque.… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,252 satisfied customers
Hello Sir. I have a cat c15 acert 475 590k miles on a pete
Hello Sir. I have a cat c15 acert 475 590k miles on a pete 379 car hauler of which I am in the middle of a "rebuild". I was very unimpressed by the massive blow by issue I have. I even enlisted your k… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,252 satisfied customers
hi,i bought my 2002 flate top pete in2009. 475 cat but previes
hi,i bought my 2002 flate top pete in2009. 475 cat but previes owner rebuilt motor from cat and thay tune up to 550 with 370 rear ends 275/8022.5 tires i drive 60mph fuel milege with pulling flatebed … read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,252 satisfied customers
I install a cat C15 acert 475hp with dpf but Im not happy
I install a cat C15 acert 475hp with dpf but I'm not happy with my fuel mileage. It's a car hauler thus the fuel mileage is never good , but it's about 10% worst than my old C15 550 hp. If I increase … read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,252 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

10,252 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