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I rebuilt the Engine, an after rebuilt, the turbo dosent
I rebuilt the Engine, an after rebuilt, the turbo dosent work right. with engine brakes, it put out 40psi. when pulling at 1400rpm its at 30psi. and at 1500rpm its at 28psi. and at 1600rpm its at 26ps… read more
Wayne
Wayne
Journeyman
Vocational, Technical or Trade Scho
4,023 satisfied customers
Having problems with cummins isx 870, 2005. Low power, no
Having problems with cummins isx 870, 2005. Low power, no turbo boost until in 6th gear, then the boost hesitate and sometimes reach 15 psi on the boost and continuous BLACK SMOKE constantly … read more
Jackie Dempsey
Jackie Dempsey
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I got 2007 freightliner Columbia coming these error, We
I got 2007 freightliner Columbia coming these error , We changed the turbo because it was leaking oil in turbo and was throwing heavy black smoke and also changed egr valve it was struck open . Now ev… read more
Bradey V
Bradey V
Certificate
I have 2007 peterbuilt model 379 with cat c15 twin turbo
I have 2007 peterbuilt model 379 with cat c15 twin turbo nxs, exhaust goes high up to 1200 … read more
Cat Man
Cat Man
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Vocational, Technical or Trade Scho
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Dr. Cummins, I have an ISX that is "derating" when the check
Dr. Cummins, I have an ISX that is "derating" when the check engine light comes and and a warning beeper goes off. This truck is off site I'm just wondering at this point what will cause this problem.… read more
cumminsdr
cumminsdr
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High School or GED
1,700 satisfied customers
06 kenworth with 565 cummins. Really weak. Only produces 3
06 kenworth with 565 cummins.Really weak. Only produces 3 to 4 psi of boost at 2000 rpm (jaking) Alot of black smoke while accelerating until 1500 rpm. But builds to 30 psi.I suspect my turbo needs to… read more
Wayne
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2007 ISX CM871 high exhaust temp and black smoke when foot
2007 ISX CM871 high exhaust temp and black smoke when foot in throttle. Truck seems to be down on power some. May not be but I don't think it has the power it should. Can I get some trouble shooting h… read more
Daniel Wilson
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Have a 2007 peterbilt with cummins ISX. Starts runs fine,
Have a 2007 peterbilt with cummins ISX. Starts runs fine, good power, no smoke, no misses. The pyro gauge is reading 1300 degrees with typical being in the 1000 to 1100 range. Typical loads. flatland.… read more
Dorian Conley
Dorian Conley
Heavy Duty Diesel Engine Technician
Vocational, Technical or Trade School
I have a 2010 kenworth t660 with a 455hp cummins isx.... it
Hello i have a 2010 kenworth t660 with a 455hp cummins isx.... it recieved a platinum overhaul at peterbilt 2 months ago along with new egr valve and cooler also a new turbo and actuator. It is blowin… read more
Roy Belding
Roy Belding
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I have a 2006 kenworth with isx 565 cummins and the turbo
I have a 2006 kenworth with isx 565 cummins and the turbo heats up bad like 1100 degress plus i have already replace the turbo / injector/ acuator controler/ acuatpr and injector cam it heats up on an… read more
Daniel Wilson
Daniel Wilson
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07 isx overheating. Replaced the water pump, replaced the
07 isx overheating. Replaced the water pump , replaced the thermostat, replaced the temp sensor , washed radiator with steamer and replaced egr valve as well , and replaced exhaust temp sensor as well… read more
Jeremy
Jeremy
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Associate Degree
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2006 IH 4200 VT365 engine. Engine runs smooth but has Very
2006 IH 4200 VT365 engine. Engine runs smooth but has Very low power from a dead stop and when climbing hills. Only builds 2#'s of boost until the truck gets going and then it slowly goes higher. Exha… read more
Daniel Wilson
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I have a Kenworth T660 with an ISX and just got the 411
Hi I have a Kenworth T660 with an ISX and just got the 411 fault code which says EGR Delta pressure. what does that mean? When coming down mountain with jake break on -thats when check engine light ca… read more
cumminsdr
cumminsdr
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2010 Kenworth, ISX 15, CM871. Seems as though it's stuck in
2010 Kenworth, ISX 15, CM871. Seems as though it's stuck in REGEN, for about 6 continuous hours of operation it was de-rated with bluish gray smoke coming from exhaust on steep hill climbs with a heav… read more
cumminsdr
cumminsdr
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i have a 2ws 3406e 515 cat engine with a pdi stage 1 up grade
i have a 2ws 3406e 515 cat engine with a pdi stage 1 up grade putting about 620 hp to wheels my turbo heats up quick i have to really let out of it and gear down in the hills and just ease on the thro… read more
Cat Man
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I have a Detroit series 60 the turbo boost pressure goes to
I have a Detroit series 60 the turbo boost pressure goes to 50 psi. when the jakes come on it also jumps to between 30 and 40 psi. the charge air cooler pipes are hot. The actuator on the turbo is fre… read more
Andy
Andy
truck /coach technician
Vocational, Technical or Trade School
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Hello I have a 2004 12.7l EGR ESN -06R0750936 When I have it
Hello I have a 2004 12.7l EGR ESN -06R0750936 When I have it in high range it pops a and puts out a spot of black smoke. We have replaced the turbo actuator, any thoughts on ther next step.… read more
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Cummins ISX #79146478 Volvo Chassis.MID 128 PID 411 FMI
Cummins ISX #79146478 Volvo Chassis. MID 128 PID 411 FMI 0 "Value to high" Overall truck has some power loss. Truck farts at lower RPM (1100-1350) with a simultaneous belch of black smoke. Under full … read more
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cumminsdr
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Meet the Experts:

Daniel Wilson

Daniel Wilson

11,536 satisfied customers

Owner at DJ Wilson

Cat Man

Cat Man

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I am ASE Master Truck Certified.

Wayne

Wayne

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

Jeremy

Jeremy

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ASE Med/HD Truck Technician, NATEF Diesel Engines and Electrical/Electronics Technician, Network Engineer specializing in CAN faults, Aftertertreatment, and vehicle communications

cumminsdr

cumminsdr

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All types of Cummins applications

Curtis B.

Curtis B.

Technician

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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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353 satisfied customers

24 years of experience diagnosing & repairing

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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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