Medium and Heavy Trucks

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Related Medium and Heavy Trucks Questions
I got an ISX 15L that runs for about 45 mins then shut down.
Ok, I got an ISX 15L that runs for about 45 mins then shut down. Truck runs off 5 gallon bucket all day. Hook back to tanks truck shuts down Already ready did all pumps. Replace ECM and fuel lines and… read more
NicholasM1019
NicholasM1019
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Vocational, Technical or Trade School
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2013 volvo vnl with cummins isx 15 engine model cm2250
2013 volvo vnl with cummins isx 15 engine model cm2250 Engine serial # s79567479. Truck stalls out idling or running we have use insite trouble tree to replace everything except wiring harness. Cannot… read more
NicholasM1019
NicholasM1019
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Vocational, Technical or Trade School
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I have an ISX esn 75025815, truck was called in as a road
Second opinion] I have an ISX esn 75025815, truck was called in as a road service for regen, truck was running extremely bad, advised driver regen was not the issue, i found 2 codes--731 engine speed/… read more
Roy Belding
Roy Belding
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Running a 12.7 Detroit 60 series, replaces ecm, fuel pump,
Running a 12.7 Detroit 60 series , replaces ecm , fuel pump , new lines , new fuel tank , and truck is still running rough , sputters and shakes when I hammer it down , had a friend of mine to check f… read more
Mike Mcmillan
Mike Mcmillan
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Well we are back that c7 we have changed the regulator did
well we are back that c7 we have changed the regulator did not see anything with the other one. We have changed the engine speed sensor check for fuel blockage have not found ant problem. It still doe… read more
Cat Man
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Vocational, Technical or Trade Scho
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I have an ASV RC50 - early 2000's sn about 1028 with a CAT
I have an ASV RC50 - early 2000's sn about 1028 with a CAT 3024c engine. Starts right up and responds to throttle positions when cold. after 10 mins when warmed up starts erratic rpm (revs, almost die… read more
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Cummins n14 rough idle when warm most of the time, poor fuel
Cummins n14 rough idle when warm most of the time , poor fuel economy ,low power, getting warm quickly approaching any hill. Same Thing before and after work done to engine.Replaced heads ( old had in… read more
Daniel Wilson
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Auto Mechanics 1&2/diesel mech
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I have another Mack mp7 question. I have a garbage truck in
I have another Mack mp7 question. I have a garbage truck in here now, it came in with a low power complaint. Basically it would barely pull its self. Dropped the fuel filters diesel fuel looked like l… read more
Mike Mcmillan
Mike Mcmillan
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Dr. Cummins, Have a ISX that is starting hard and runs rough
Dr. Cummins, Have a ISX that is starting hard and runs rough for a lil while... Once its cleans up it runs good. It will start and run for a couple seconds then die then crank and crank and not start.… read more
cumminsdr
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I have a ddec 6. Surges at high idle. Just did head gasket.
I have a ddec 6. Surges at high idle. Just did head gasket. … read more
Daniel Wilson
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2004 peterbilt 330 with c7 hard starting when engine is
2004 peterbilt 330 with c7 hard starting when engine is cold,intermitte.check in no start condition,not starter or battery issue.possible fuel. check fuel up to cylinder head ok,check oil pressure at … read more
Cat Man
Cat Man
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I have 1994 m11 cummins that will crank and run for 30 to 45
I have 1994 m11 cummins that will crank and run for 30 to 45 seconds and cut off. No codes are showing on computer.… read more
FIX-IT
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GOT CUMMIN ISX ESN 79423799, CRANKS BUT WONT START, REMOVED
GOT CUMMIN ISX ESN 79423799, CRANKS BUT WONT START, REMOVED FUEL FILTER IT WAS DRY, FILLED IT UP PUT FILTER BACK ON, AND STARTED, AFTER SHUTS OFF ANF WONT START, REMOVED FILTER AND DRY, REDO SAME PROS… read more
cumminsdr
cumminsdr
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I have this cummins isx ESN 79125882 Giving problem when
Hello I have this cummins isx ESN 79125882 Giving problem when starting very hard to start Even after 1 hr of standstill the fuel returns All fuel lines are ok What could cause it internally Plz help… read more
cumminsdr
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2003 Volvo 660. Cummins N14. Truck hesitates and stutters
2003 Volvo 660. Cummins N14. Truck hesitates and stutters really bad upon any load at all. It's somewhat intermittent as to how long or how violent but it consistently does it. It smoothes out after a… read more
Daniel Wilson
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And my name is ***** ***** have international truck DT466 4300
Hi and my name is ***** ***** have international truck DT466 4300 engine. I encountered rough idling this past 2 days in the morning when im trying to warm up my engine. The first day it takes about 7… read more
Andy
Andy
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Vocational, Technical or Trade School
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Hi, Im having a problem with a Cummins ISC with the CAPS fuel
Hi, I'm having a problem with a Cummins ISC with the CAPS fuel pump. It will not start when it's hot. 150 to 180 degrees engine temp. The only way it will start is using a little starting fluid. It st… read more
FIX-IT
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2010 Navistar Maxxforce 10 runs rough on cold start up, after
2010 Navistar Maxxforce 10 runs rough on cold start up, after warming up the unit runs fine. Any idea what the problem may be?… read more
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Meet the Experts:

Daniel Wilson

Daniel Wilson

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I am ASE Master Truck Certified.

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

Jeremy

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Curtis B.

Curtis B.

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

Chris (aka-Moose)

Chris (aka-Moose)

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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.

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