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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
2006 international 9400i w isx 450! lost! runs fine on flat
2006 international 9400i w isx 450! lost ! runs fine on flat but soon as you start climbing the turbo boost starts flutering … read more
Scott Anthony
Scott Anthony
Master Technician
HS Diploma
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2013 MAXXFORCE 9 MODEL A330 9.3L This truck has no codes,
2013 MAXXFORCE 9 MODEL A330 9.3L This truck has no codes, also has no power, if you take off from a red light it will not create any boost, no vgt, the high pressure turbo does use an integrated waste… read more
Scott Anthony
Scott Anthony
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2007 IH 9900 ISX CM871 My Customer Had Turbo Replaced By
2007 IH 9900 ISX CM871 My Customer Had Turbo Replaced By Another Shop Ever Since He's Complaning Truck Will Not Boost Correctly He Replaced Controller Problem Still Exsists I Have It At My Shop Now I … read more
Wayne
Wayne
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Boost reading on scanner is 31.872 but mechanical gauge goes
Boost reading on scanner is 31.872 but mechanical gauge goes up to 39 psi … read more
Wayne
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I just had my fuel pump replaced after it blew apart
I just had my fuel pump replaced after it blew apart (ceramic rods). Should of been part of the recall but was missed. I have no codes and haven't had any even before the pump issue but when I'm drivi… read more
Mike Mcmillan
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I've got a isx cummins engine that is losing oil pressure,
I've got a isx cummins engine that is losing oil pressure, drops from 40 psi to 22 psi every 7000 miles, was doing it every 10000 miles at first. If I replace the oil filter I'm good for another 7000 … read more
timdieseltech
timdieseltech
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I have 2008 isx 400st, it keeps loosing power after 4-5 hr
I have 2008 isx 400st, it keeps loosing power after 4-5 hr drive.I get code 0125 (intake manifold psi- data valid but below normal range) 2288 - turbocharger speed ( data valid but above normal range)… read more
Daniel Wilson
Daniel Wilson
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On a 2007 freightliner classic with the Mercedes over
On a 2007 freightliner classic with the Mercedes over Detroit block I have just had a inframe rebuild on engine but still loss of power. Turbo doesn't seem to be working rite at a idel turbo psi gauge… read more
Curtis B.
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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
Daniel Wilson
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Cummins 400 ISl Oil Spray Just picked motorhome up from
Cummins 400 ISl Oil Spray Just picked motorhome up from repair shop after: air dryer filter replaced, turbocharger replaced, new oil, oil filter, air filter and front cover resealed. Drove 25 miles an… read more
cumminsdr
cumminsdr
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High School or GED
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I have a turbine intake tempeture hight making the vehicle
I have a turbine intake tempeture hight making the vehicle loose power … read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
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Cat Man - I have another issue with the C15 that we have
Hi Cat Man - I have another issue with the C15 that we have been working on. The turbo boost is only getting up to 25 PSI with a load and it's very low on power. The engine has been in-frame overhaule… read more
Cat Man
Cat Man
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Vocational, Technical or Trade Scho
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I have a 2003 cat c12 505 hp in a beaver RV. Motor seems to
I have a 2003 cat c12 505 hp in a beaver RV. Motor seems to run fine and pulls long grades fine however a engine code 25 faults occurs occasionally and interrupts my cruise control for about 5 minutes… read more
Cat Man
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My 3406e has just had a head gasket replaced. Now the turbo
My 3406e has just had a head gasket replaced. Now the turbo supplies boost intermittently. When it is not working correctly boost will not exceed 10 psi. During these periods the exhaust note is muted… read more
Cat Man
Cat Man
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I am working on a sdp acert engine. Turbo boost not reaching
I am working on a sdp acert engine. Turbo boost not reaching max. Sometimes it will reach 40psi and drop back to about 32 psi… read more
Daniel Wilson
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I have a 99 cat 3406e that has had a recent rebuild when climbing
I have a 99 cat 3406e that has had a recent rebuild when climbing a big hill fully loaded the turbo boost hits 30psi and then drops to 25 and then climbs back up to 30psi it may do this all the way up… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
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Dutchstar Motor home, 3126E S/N CKM42962....65000 mi. At what
Dutchstar Motor home, 3126E S/N CKM42962....65000 mi. At what pressure should the wastegate open and is this the max turbo boost pressure?My boost went from 26 to 22, discovered ex gasket leak.Ive got… read more
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Meet the Experts:

Daniel Wilson

Daniel Wilson

4,737 satisfied customers

Owner at DJ Wilson

Cat Man

Cat Man

Cat Engine Expert

5,234 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

4,296 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

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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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