Medium and Heavy Trucks

Have truck repair questions? Ask an Expert

Ask an Expert,
Get an Answer ASAP!

Related Medium and Heavy Trucks Questions
I want to know if putting a cummins 8.8 capps fuel system
I want to know if putting a cummins 8.8 capps fuel system head onto a cummins 8.9 common rail bottom end will be alright with the different injector nozzle spray angle and piston shape. Thank you … read more
cumminsdr
cumminsdr
Mechanic
High School or GED
1,351 satisfied customers
Dr. Cummins, have a ISX 79299929 that we did a inframe on.
Dr. Cummins, have a ISX 79299929 that we did a inframe on. The engine was abused really bad as in when it came in it was pushing oil out the breather, had 9 psi oil pressure at hot idle and the air fi… read more
cumminsdr
cumminsdr
Mechanic
High School or GED
1,351 satisfied customers
Installed a new head on a 2004 ISM, Doed thr fuel port plugs
Doed thr fuel port plugs need to be removed from both ports … read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
2,803 satisfied customers
Need a Cummins Expert on ISC 2150 Engine, My problem is my
My Name John need a Cummins Expert on ISC 2150 Engine , My problem is my command pressure is 94247 psi and actual is over 11000 psi . I have no real active codes .. Until today I have 559 ( inactive c… read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
2,803 satisfied customers
2001 n14 have low oil pressure has new main and rod bearing
2001 n14 have low oil pressure has new main and rod bearing and oil pump and oil pan has 15 psi at ilde will not go up much it you rev up put oil gauge in oil pump temp sensor and it is at 30 and goes… read more
cumminsdr
cumminsdr
Mechanic
High School or GED
1,351 satisfied customers
My driver lost oil pressure and the engine shut down,
My driver lost oil pressure and the engine shut down , brought it back to the shop started it at an idle 15 psi at 2000rpm 40 psi. I pulled the pickup tube and checked the pump to see if it sheared th… read more
cumminsdr
cumminsdr
Mechanic
High School or GED
1,351 satisfied customers
C7 use to hold 37.5 psi but just recently dropped to 25 psi.
C7 use to hold 37.5 psi but just recently dropped to 25 psi. Just replaced barrings and still only holding 26-27psi at operating temp... … read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
2,803 satisfied customers
Working on isc got engine light on I can only go 35 MPH got
Working on isc got amber engine light on I can only go 35 MPH got code 128 157 1 pid rail pressure problem were to start lift pump or high pressure pump already swap the fuel filters… read more
Jackie Dempsey
Jackie Dempsey
Heavy Line Technician
Automotive and Diesel Engines
100 satisfied customers
Cummins isx lots of actuator problems was originally
Cummins isx lots of actuator problems was originally breaking actuator bolts that hold actuators together. Timing actuator on 123 cylinder . Have replaced 123 injectors by mechanic new relief valves o… read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
2,803 satisfied customers
Alright - my next issue. Different truck but it also has a
Alright - my next issue. Different truck but it also has a cummins 8.3 serial # ***** Oil pressure gauge says about 45 psi when truck is first turned on. After the truck is warm - at idle - oil pressu… read more
cumminsdr
cumminsdr
Mechanic
High School or GED
1,351 satisfied customers
2003 vt365 inter motor no start had no hv pressure replaced
2003 vt365 inter motor no start had no hv pressure replaced hv oil pump then it started ran for 10 min and then shut it off then no start have no oil pressure pulled oil filter and cranked over it fil… read more
Andy3221
Andy3221
truck /coach technician
Vocational, Technical or Trade Scho
222 satisfied customers
I have a CAT 3126B. I had a no start issue where it would turn
I have a CAT 3126B. I had a no start issue where it would turn over but not fire up. I had 0 PSI on the dash oil pressure guage so I ended up replacing the oil filter and swapped in a salvage oil pump… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
4,530 satisfied customers
cummins man I have a Maxforce 13 2012 with over 100 oil
cummins man I have a Maxforce 13 2012 with over 100 oil pressure. I have heard this could come from the pump. Has fresh filters, new regulator and with a gauge over 100 upon start up. could some retur… read more
Andy3221
Andy3221
truck /coach technician
Vocational, Technical or Trade Scho
222 satisfied customers
Maxforce 13 engine always was around 60 psi running down the
Maxforce 13 engine always was around 60 psi running down the road, now its steady 80 to 90 psi and if you hit the throttle at idle warm it jumps to 100+ What could cause this. I have already changed t… read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
2,803 satisfied customers
How can I verify that my oil pressure is low on my isx oil
How can I verify that my oil pressure is low on my isx oil pressure shows 0 oil is full just stopped for lunch don't know if it is just the sending unit need to know where thee sending unit is and how… read more
cumminsdr
cumminsdr
Mechanic
High School or GED
1,351 satisfied customers
Ive got a newly rebuilt c-15, The oil pressure goes beyond
I've got a newly rebuilt c-15, The oil pressure goes beyond what the pressure gauge will show witch is 85 psi. Also when i kill the truck the pressure gauge stays at or over 60 psi for quite a while. … read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
4,530 satisfied customers
Have 99 freightliner with cummins n 14 thought turbo was bad
Have 99 freightliner with cummins n 14 thought turbo was bad because it was leaking at rear of turbo and had small amount of oil in air cooler tube. Put on friends used turbo and still oil coming out.… read more
spankyjr1
spankyjr1
Retired
Vocational, Technical or Trade Scho
19 satisfied customers
I am working on a 3126 and getting a fault code for high pressure
I am working on a 3126 and getting a fault code for high pressure oil readings being erratic. Using Prolink IQ monitored pressure on a test drive and pressures were running around 800 to a 1000 psi lo… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
4,530 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

2,803 satisfied customers

Owner at DJ Wilson

Cat Man

Cat Man

Cat Engine Expert

4,530 satisfied customers

I am ASE Master Truck Certified.

Wayne

Wayne

Journeyman

11,443 satisfied customers

worked on, Gmc, Macks, Freight liner,Mercedes Benz,,Ford, sterling

Jeremy

Jeremy

Certified Truck/Bus Technician

2,243 satisfied customers

ASE Med/HD Truck Technician, NATEF Diesel Engines and Electrical/Electronics Technician, EPA 608/609 HVAC Certified, Steering/Suspension and ABS/Brakes Technician

cumminsdr

cumminsdr

Mechanic

1,351 satisfied customers

All types of Cummins applications

Curtis B.

Curtis B.

Technician

991 satisfied customers

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

dieseldan55

dieseldan55

Contractor

74 satisfied customers

Road Service mechanic for Volvo Construction.

< 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