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Related Medium and Heavy Trucks Questions
A hissing sound behind the dash. If you are stopped there is
A hissing sound behind the dash. If you are stopped there is no sound and if you rev the engine there is no sound. If you are climbing a hill the sound gets louder and goes to nothing on flat. All the… read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
2,803 satisfied customers
I have a C15 Acert MXS that has low power, low boost and
I have a C15 Acert MXS that has low power, low boost and high egt. Seems to get worse the longer the truck runs. Truck has been to a Peterbilt dealer and can't find any boost leak.… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
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I've C15 BXS with VVAs put to sleep, and tuned to 650hp. I
I've C15 BXS with VVAs put to sleep, and tuned to 650hp. I has an derate issue when cold, with a load it will only build 35 psi boost, and feels draggy, and after you've driven bout 5-10 minutes it st… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
9,643 satisfied customers
Loss of power while driving the interstate and idling at red
Hey There; Loss of power while driving the interstate and idling at red lights. Truck restarts immediately. Dies agan within seconds to 5 minutes. We found codes on the odometer reading: … read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
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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
Auto Mechanics 1&2/diesel mech
2,803 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
9,643 satisfied customers
BillyThumping noise near the air filter, I have a C15 engine
I have a C15 engine and I'm hear a thumping noise inside the air filter housing … read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
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Cat Man, I have a 3406 3ZJ54893 that pulls strong until
Cat Man, I have a 3406 3ZJ54893 that pulls strong until about 1600-1700 rpms then just slowly pulls to 2000 rpm. We changed the fuel filters but that didn't change anything. Where should I go next? Al… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
9,643 satisfied customers
What are the possible causes c15 acert to give very
Hello sir What are the possible causes for cat c15 acert to give very excessive white smoke ( no coolant loose) Idealing is ok but as u give throttle white smoke increase and rpm goes up very slow wit… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
9,643 satisfied customers
My 2007 c15 acert cat is burning oil. 1 gallon per 400 miles.
My 2007 c15 acert cat is burning oil. 1 gallon per 400 miles. No real smoke just the norm when you shift a little puff. Blow by is ok. We got low oil pressure light running it the other day we can't m… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
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Hi I have a 05 t800 with a c15 acert. I keep blowing my oil
Hi I have a 05 t800 with a c15 acert. I keep blowing my oil cap off. I changed the compressor that had been leaking but no luck. Will only do it at highway speed or when pulling a load. No excessive b… read more
Jeremy
Jeremy
Certified Truck/Bus Technician
Associate Degree
2,243 satisfied customers
I have a 2001 Kw with c15 475 cat with a loss of power. No
I have a 2001 Kw with c15 475 cat with a loss of power. No check engine light, no obvious noises for a missing cylinder. Idles and runs perfectly just a loss in overall power and acceleration. No fuel… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
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What are the best specs to get the best fuel mileage on a c15
What are the best specs to get the best fuel mileage on a c15 cat 2004 to 2007 engines? Even the newer ones with dpf? I will be using them over the road... Maint highway and sometimes mountain depends… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
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Hi dan I hav got the code sid 254 fail 08 on my detroit 05
Hi dan I hav got the code sid 254 fail 08 on my detroit 05 , alot of black smoke coming out and engine misfires too , I have replased egr this weekend and v-pod 2 month ago and also turbo boost sensor… read more
Clayton
Clayton
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Have a 2006 kenworth T600 with Cat C-15 in it. Doesnt seem
Have a 2006 kenworth T600 with Cat C-15 in it. Doesn't seem to have pulling power with load hooked up to it and have to shift between gears alot. Power ok no load. Had a bad turbo and replaced. Also e… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
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my 99 international looses power and powers out totally and
my 99 international looses power and powers out totally and has to stop going up a short steep hill.… read more
Cat Man
Cat Man
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Freightliner XL Chassic: I have a 2006 C- 15 Cat engine and
I have a 2006 C- 15 Cat engine and only getting 4.3 mpg. Please help me get 6 or 6.5 mpg please.… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
9,643 satisfied customers
c15 engine leaves trail of black smoke under load and is blowing
c15 engine leaves trail of black smoke under load and is blowing black soot at turbo side of motor.would falty waste gate at turbo be the cause?have no exhaust leak at manifold… read more
Cat Man
Cat Man
Cat Engine Expert
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9,643 satisfied customers
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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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