Medium and Heavy Trucks

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Related Medium and Heavy Trucks Questions
We have a c15 and it is smoking and missing a lot when cold
Hi, We have a c15 and it is smoking and missing a lot when cold but the exhaust temp goes up to 1300-1500 in about 5 miles loaded, turbo pressure goes to 45-55 what could be wrong? … read more
NicholasM1019
NicholasM1019
Diesel Technician
Vocational, Technical or Trade School
10 satisfied customers
I have 2012 367 Peterbilt with isx Cummins but it's original
I have 2012 367 Peterbilt with isx Cummins but it's original engine and would like to replace it with c15 6nz is there conversion kits available … read more
Mike Mcmillan
Mike Mcmillan
Triage Tech/Shop Foreman
Associates
443 satisfied customers
Replaced turbo assy on t600, only builds boost to 20psi.
replaced turbo assy on t600, only builds boost to 20psi … read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,253 satisfied customers
C15 cat, boost sensor was replaced at cat dealership and
C15 cat, boost sensor was replaced at cat dealership and truck had 60 pounds of boost the day I picked it up, drove home cut truck off and the next day it wouldn?t get over 30 psi, every once in a whi… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,253 satisfied customers
Cat Man, I have a 6NZ that I'm having a couple issues with.
Cat Man, I have a 6NZ that I'm having a couple issues with. The first and worst is I had it in for a 10,000 mile service and found antifreeze coming out of # 4 exhaust port. 20,000 miles ago it had a … read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,253 satisfied customers
We have a 6nz c15 (6nz92014) with only low engine braking
Hi We have a 6nz c15 (6nz92014) with only low engine braking working and low on the high position, nothing on medium. We have checked solenoids, both manually and giving each one power, checked engine… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,253 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
10,253 satisfied customers
I have a 05 379 I am having problems with the engine not
I have a 05 379 I am having problems with the engine not picking up the throttle position acts like it wants to but just cant. (Sometimes) it acts like it's starving for fuel and starts fluttering and… read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
4,737 satisfied customers
I have a c15 acert serial number mxs rates at 550 hp. The
I have a c15 acert serial number mxs rates at 550 hp. The motor has a cold skip that goes away when water temp reaches about 150. The engine was platinum overhauled by thompson caterpillar. It also re… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,253 satisfied customers
I just swapped out my cat c13 acert engine in my 05 pete
Hey Tim, I just swapped out my cat c13 acert engine in my 05 pete 379, and replaced it with a c15 6nz engine, both were 70 pin on the harness. it will crank, but only fire on ether. of course it dies … read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,253 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
10,253 satisfied customers
Purchased genuine cummins GENII 8246CPL @ 600HP recon engine
Purchased genuine cummins GENII 8246CPL @ 600HP recon engine fitted to 4900 western star 950000KMS engine performs approx I gear better than old unit. engine break not working correctly from start. WO… read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
4,737 satisfied customers
Hello - I replaced one injector in my Cat C15 6nz and now it idles rough but I am still ge
Hello - I replaced one injector in my Cat C15 6nz and now it idles rough but I am still getting 25 - 30 lbs manifold pressure and power is good. Also my air compressor has a blown head gasket does tha… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,253 satisfied customers
I have a Peterbilt with a c15 acert bxs serial prefix. It started
I have a Peterbilt with a c15 acert bxs serial prefix. It started cutting out the other day and we are trying to figure out why. I have cat et and there are no codes or events. Coolant temp is correct… read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
4,737 satisfied customers
I have a 2008 Peterbilt with a C15. It has kind of a miss,
I have a 2008 Peterbilt with a C15. It has kind of a miss, it's like someone cuts power to the injectors for a split second. It makes the engine shudder but gives no codes doesn't even kick off the cr… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,253 satisfied customers
Hi Cat Man I am needing some help. I bought a truck with a
Hi Cat Man I am needing some help. I bought a truck with a SDP acert with broken rockers and housing. I replaced all those parts to find low power and was unhappy with engine I never drove an acert so… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,253 satisfied customers
I have an 2002 w900 kw with a c15 475 cat motor. 3406. It
I have an 2002 w900 kw with a c15 475 cat motor. 3406. It is loosing boost power suddenly when the check engine light comes on. The code inside the truck reads 102-04. Its reads that the boost sensor … read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,253 satisfied customers
Hi there i have 2 trucks in our fleet that are totally baffling
Hi there i have 2 trucks in our fleet that are totally baffling me, both have a miss at low revs, 700-900rpms and at full revs 2120rpms 1 is a freightliner Argosy 2007 model and the other is a western… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,253 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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