The new C15 acert engine

Posted in the Caterpillar Forum

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jerry

Westminster, MD

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#671
Sep 12, 2012
 
have a 06 accert code 95 keeps coming up changed valve ac wire looms in top and oring in top new oil sensor what next

“Full-Service Cat Tech. ECM's!”

Since: Jun 12

Marion, IN

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#672
Sep 12, 2012
 
jerry wrote:
have a 06 accert code 95 keeps coming up changed valve ac wire looms in top and oring in top new oil sensor what next
Flash code 95 can mean several different things. You've already replaced everything BUT the problem, it sounds like. The VVA (Variable Valve Actuator) on the number 6 cylinder is not responding, or has a voltage reading that is either too high, or too low.

Cat recommends you replace these in pairs, so you would change cylinder 5 & 6 at the same time (it's up to you). I pay $310 for two in a box.

Flash code 95 also can mean that the IVA oil pressure sending unit is not reading right (you changed it), or the IVA oil supply o-ring is leaking (you replaced it).
jerry

Dallas, TX

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#673
Sep 15, 2012
 
what is the voltage suppose be on va
Ken

Marion, IN

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#674
Sep 19, 2012
 
jerry wrote:
what is the voltage suppose be on va
about 5 volts. I get readings from 4.7 to 5.3 volts.
Jay

Southbury, CT

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#675
Sep 21, 2012
 
Cat engines are the best .. BUT when they started adding twin turbo and dpf .. The engine became shitty .. Cat engine with single turbo is the best
Jake

Calgary, Canada

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#676
Sep 28, 2012
 
I get sick of listening to people crying about mpg. They say there always heavy(80000lbs) what a joke that's half a load, I live in Canada I pull 140000lbs drive 60mph and average 5.5 mpg you have to slow down and take your time, I'm happy with my mpg, if I would pull 80000 I could at least get 7.5 mpg and I drive a Pete 379exhd
Lookingatacat

Denver, CO

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#677
Oct 7, 2012
 
Simple question. What is acceptable blowby cfm or cfh whichever it is?
jay

United States

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#678
Oct 8, 2012
 
Thanking of getting a c15 with 465 h.p. Wanting to turn up to 600 h.p. Ur thoughts mixed emotions?
Jesus Cardenas

Compton, CA

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#679
Oct 11, 2012
 
I HAVE A 2008 PETERBILT 387 WITH A C-15. MY CURRENT ISSUE IM HAVING IS THAT WATER IS GOING THREW THE TURBO OUTLETS INTO THE COMBUSTION CHAMBER
Garay

United States

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#680
Oct 14, 2012
 
Hey cat god I have a problem with my 07 pete with a c15 it being like miss firing while driving they've change a couple of things and it's the same
Sam

Mishawaka, IN

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#681
Oct 16, 2012
 
Why do my "IVAs keep going bad? Terrible design. Wish I had my old c15 in this truck..
chris g

Tegucigalpa, Honduras

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#682
Nov 2, 2012
 
I have a doubt with respect to the motor one cat c15, they have said me that the cumins is better, if they tell me the advantages and disadvantages of the cat c15, in short the because better to use the c15
JAKE BRAKE

Baton Rouge, LA

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#683
Nov 15, 2012
 
id take a pre emission 12.7 detroit at 470 anyday over any cat, Cummins I do like however, try a cummins kta 600
jesse

United States

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#684
Nov 29, 2012
 
Oil line from turbo to block is too long. Will rub against water pump and bust on the 2005. Waste dump valve on turbo will break. Line on top gets pulled out.
Diesel Instructor wrote:
<quoted text>
Any one have any other specific documented info on the C15 ACERT
Regeneration problems? I am aware of the law firm in texas. HTSI
Louisville, KY posted about his efforts back in 09 Never heard anything else. anybody else?
jesse

United States

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#685
Nov 29, 2012
 
Oh yeah, 5.1mpg no matter what speed or terrain.
who="jesse"]Oil line from turbo to block is too long. Will rub against water pump and bust on the 2005. Waste dump valve on turbo will break. Line on top gets pulled out.
<quoted text>
Bryce

United States

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#686
Dec 6, 2012
 
Ken wrote:
<quoted text>
When you tested the air-to-air, was it done with a pressure-testing kit? Also, why was the engine running hot in the first place? Did it turn out to be that the thermostats were "stuck open"?
When was the last time you changed the air filters? Air restriction will not only cause an engine to run hot, it won't be able to develop proper boost through the turbo, either. Did you blow the dirt out of the "Radiator core/air-to-air core/AC Evaporator" combo in front of the engine?
When an air-to-air system can't properly "cool" the intake air, the engine temp will run about 10 to 15 degrees hotter all the time & the engine won't "boost or pull" like it should. We had a 2002 C-15 like yours that did just that, there was a small crack in the air-to-air aftercooler. I replaced the aftercooler, temp dropped, engine was boosting 35 again.
If you have all the temperature issues solved already, and it still won't boost or perform properly, maybe the problem is being caused by low fuel pressure. The only was to test this is to physically connect a pressure gauge to the fuel return line right before the fuel pressure regulator where the fuel filter housing is mounted on the driver side. It should be 75 psi @ an idle, and 100 psi @ 1800 rpm.
Don't pay someone to connect a "computer" to your system, they CANNOT tell the fuel pressure that way! Good luck with your truck :)
Yes they can tell fuel pressure with a computer what planet are you from stood right there and watched the digital readout of my fuel pressure on their computer
Ken

Marion, IN

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#687
Dec 7, 2012
 
Bryce wrote:
<quoted text>
Yes they can tell fuel pressure with a computer what planet are you from stood right there and watched the digital readout of my fuel pressure on their computer
Some newer units have that capability, and you could special-order the fuel system with a "pressure-sensor" when the C-15 first went into production...but the majority of Cat engines produced prior to 2007 do NOT have any way to "see" the fuel pressure electronically.
I posted that to save people uneccessary expenses at a dealership. I have the same Cat ET program & computer that they use, so I should know :)
rawhide

Columbia, SC

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#688
Dec 11, 2012
 
I think cat sucks, I have a 475 acert and it not worth a crap fuel mileage stinks wish i had my detroit back. Plus the mechs if the computer dont tell whats wrong they are lost as with them doing what they say they will. must be the water here in sc
Lookn

United States

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#689
Dec 13, 2012
 
Ok I haVe a question which is better Pittsburg power or pdi????
Ken

Marion, IN

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#690
Dec 14, 2012
 
Lookn wrote:
Ok I haVe a question which is better Pittsburg power or pdi????
Pittsburgh Power has been modifying engines for over 20 years, they've always been out-front of the competition. Bruce Mallinson has been writing a newspaper column for trucking mags for years, as well. I've been inside their facility in Cheswick, PA and saw all the work areas. Very knowledgeable people!

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