Medium and Heavy Trucks

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Related Medium and Heavy Trucks Questions
I have a 2004 C-15 mbn with a PDI turbo on it. When pulling
Hello I have a 2004 C-15 mbn with a PDI turbo on it. When pulling a hill the turbo will stall at around 1400 rpm and have to shift. Any Idea what would cause this problem? … read more
Nich1019
Nich1019
Diesel Technician
Vocational, Technical or Trade School
64 satisfied customers
Cat Man my Cat c15 engine was running fine and all of a
Hi Cat Man my Cat c15 engine was running fine and all of a sudden cutted out the power like there was no fuel and died.I have checked the filters and they were pure much empty.Okay.So I replaced them … read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
6,062 satisfied customers
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
10,344 satisfied customers
I have a 2004 379 with C15 MBN. This engine will pull great
I have a 2004 379 with C15 MBN. This engine will pull great in Colorado all day long no problem from Grand Junction up to this high country I'll Telluride. From Grand Junction to Denver on the less ag… read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
6,062 satisfied customers
3406b 4mg s/n. In a 1990 kenworth. Has been losing fuel
3406b 4mg s/n. In a 1990 kenworth. Has been losing fuel prime and will not start without hand priming/ ether. Have replaced hand primer, as well as fuel transfer pump. Put a clear sight tube in betwee… read more
Nich1019
Nich1019
Diesel Technician
Vocational, Technical or Trade School
64 satisfied customers
Plz i need help with my cat engine ... 2004 peterbilt 379
Hello, plz i need help with my cat engine ... 2004 peterbilt 379 Cat c15 Mbn12209 Engine was overhauled 70k miles ago at peterbilt shop . In past few days the truck will derate and And won't accelerat… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,344 satisfied customers
I have a cat C15 6NZ it has an intermittent noise coming
I have a cat C15 6NZ it has an intermittent noise coming from secondary filter base when the noise accuses the fuel Presure drops about 4 lbs ? … read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,344 satisfied customers
Have a C15 cat fuel filter is only half full changed all
Have a C15 cat fuel filter is only half full changed all lines to tank engine light coming on real bad miss and shutters when under load pulling runs fair empty … read more
Curtis B.
Curtis B.
Technician
Associate Degree
1,947 satisfied customers
I have an 04 Pete 475 Cat mbn prefix.. runs sluggish clogs
I have an 04 Pete 475 Cat mbn prefix.. runs sluggish clogs primary & starts losing fuel pressure.. I took off main delivery line & found inline heater strap inside hose. I believe the hose is to narro… read more
Curtis B.
Curtis B.
Technician
Associate Degree
1,947 satisfied customers
I have a cat c15 that is cutting out under load it is
I have a cat c15 that is cutting out under load it is throwing no codes wont build boost i checked for intake and exhaust leaks has new turbos on it im lost… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,344 satisfied customers
Fuel pressure is only 30 psi on idle. Done a new fuel line
Fuel pressure is only 30 psi on idle. Done a new fuel line to transfer pump from the split valve by the fuel tanks. Has new transfer pump. New fuel filters. New pressure regulator. Looked into every t… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,344 satisfied customers
2004 Freightliner Columbia with a Cat C-15 Bridge (MBN
2004 Freightliner Columbia with a Cat C-15 Bridge (MBN series, single turbo) engine has no power thru the gears, but most noticeably from 7th on up to 10th. Problem initially started when the truck bl… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,344 satisfied customers
I have a c15 acert and a 2001 c15 single turbo in a Pete can
I have a c15 acert and a 2001 c15 single turbo in a Pete can I swap them and what problems would I have… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,344 satisfied customers
I have a 6nz c15 cat in a 2002 western star. I loose prime
I have a 6nz c15 cat in a 2002 western star. I loose prime when my tanks are not full. I have changed the steel line from the transfer pump to the filter housing. Changed the filter housing, all fuel … read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,344 satisfied customers
I have a 2004 Pete with a C15 CAT. Driver said truck idles
I have a 2004 Pete with a C15 CAT. Driver said truck idles fine but when you take off under a pull it cuts out like it's starving for fuel. Both fuel filters have been replaced (still cuts out). Fuel … read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,344 satisfied customers
Hi, I have a 2006 pete 357 with c-13 cat that recently developed
Hi, I have a 2006 pete 357 with c-13 cat that recently developed a distinct hesitation while driving. Almost like the key was turned off briefly, it comes right back but seems to be getting more frequ… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,344 satisfied customers
Hi Cat Men I steel have problems with a C-15 Accert serial
Hi Cat Men I steel have problems with a C-15 Accert serial #SDP15471, too much cranking to start, after start engine runs very good but when turn it off and try to star after one minute takes too long… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,344 satisfied customers
Kenworth T600, Caterpillar C15 engine, turbos are surging,
Kenworth T600, Caterpillar C15 engine, turbos are surging, turbos whine heard and turbos accelerating and decelerating but engine speed stays relatively constant… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,344 satisfied customers
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Meet the Experts:

Daniel Wilson

Daniel Wilson

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Owner at DJ Wilson

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Cat Man

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I am ASE Master Truck Certified.

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

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cumminsdr

cumminsdr

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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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