Medium and Heavy Trucks

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Related Medium and Heavy Trucks Questions
Loss of oil pressure with a 2006 accert engine. it's
loss of oil pressure with a 2006 accert engine. it's consistently running at 30 lbs. driver reported it was running around 60 before the drop … read more
NicholasM1019
NicholasM1019
Diesel Technician
Vocational, Technical or Trade School
7 satisfied customers
C15, 630 hp, leaking oil out the housing. Rear main seal, I
C15, 630 hp, leaking oil out the bell housing. Rear main seal, I suppose. … read more
NicholasM1019
NicholasM1019
Diesel Technician
Vocational, Technical or Trade School
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I have a 2004 c15 Acert that only builds 12 pounds of boost.
I have a 2004 c15 Acert that only builds 12 pounds of boost … read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,239 satisfied customers
Customer wants to change C15 Acert from 475HP to 550HP.
Customer wants to change C15 Acert from 475HP to 550HP. Current software is(###) ###-####00 and looks like it can be flashed to a(###) ###-####however … read more
catmastertech
catmastertech
Field service technician
Vocational, Technical or Trade Scho
1,307 satisfied customers
2005 w900 with C15 Acert MXS12238. Low boost, truck will
2005 w900 with C15 Acert MXS12238. Low boost, truck will never go above 31.5 lbs no matter the load. EGT's also stay low and never go above 600F after turbo loaded or unloaded. No boost leaks found, s… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,239 satisfied customers
2005 Peterbilt 379 c15 acert cooling fan comes on at the
2005 Peterbilt 379 c15 acert cooling fan comes on at the correct temp. but noticed it will not stay on long enough to bring temp. down. shuts off fan prematurely. … read more
Wayne
Wayne
Journeyman
Vocational, Technical or Trade Scho
4,023 satisfied customers
2004 cat acert c15 Diesel engine over heats only when boost
2004 cat acert c15 Diesel engine over heats only when boost pressure reaches over 30 psi with light loads and 17 psi with heavy loads. No coolant loss or oil. Compression is good on all cylinders. Wil… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,239 satisfied customers
What do the v band clamps on the turbo housing torque to?
What do the v band clamps on the turbo housing torque to? C15 acert. … read more
Mike Mcmillan
Mike Mcmillan
Triage Tech/Shop Foreman
Associates
430 satisfied customers
I have a 2005 peterbilt 379 with a cat acert C15 in it the
I have a 2005 peterbilt 379 with a cat acert C15 in it the blower motor will not work on any speed I have gotten the multimeter out and started checking when I go to any point in the system be at the … read more
Andy
Andy
truck /coach technician
Vocational, Technical or Trade School
207 satisfied customers
06 mxs 475 acert I wanna know if I update it to a 500 to 525
06 mxs 475 acert I wanna know if I update it to a 500 to 525 or even a 550 will I notice a big gain in power..cause everyone is telling me that in the acerts you notice no power gain in the acert beca… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,239 satisfied customers
I have t600 with acert engine. During a hard pull especially
I have t600 with acert engine. During a hard pull especially under heavy loads or cold days, it will stumble or puff for 2 or 3 seconds and then it's okay. This random, it doesn't do all the times. It… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,239 satisfied customers
I have a c15 mxs model throwing a 73 flash code and is
I have a c15 mxs model throwing a 73 flash code and is misfiring only does when hot I changed wiring harness under valve covers a main harness from ecm to valve cover base … read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,239 satisfied customers
We have a C15 Acert in a 2005 Peterbilt 378. The jake brake
We have a C15 Acert in a 2005 Peterbilt 378. The jake brake only works on low and before that it was working in every position but started cutting out. Now it is only giving us low and there is no pow… read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
4,737 satisfied customers
Have a cat C15 acert mxs 2005. Truck spins but won't start.
Have a cat C15 acert mxs 2005. Truck spins but won't start. Ecm has power on 70 pin when keyed, and no power on pin 52 & 53. All buss fuses have power, and all lines up to ecm before split has power. … read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,239 satisfied customers
I have a MXS C15 acert that sat for a while with out power
I have a MXS C15 acert that sat for a while with out power and now shows code 253-2. I have been able to re program all parameters and perform a speed calibration but I dont know what to enter for FLS… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,239 satisfied customers
I have a 2001 Peterbilt with a Cat C15 serial number
Hello I have a 2001 Peterbilt with a Cat C15 serial number 6Nz20932, I have to replace the engine but don't know what swaps I can use. Most of the trucks I find for parts have a Cat C15 Acert engine. … read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,239 satisfied customers
Have a c15 2007 same deal fuel delivery is good will crank
Have a c15 2007 same deal fuel delivery is good will crank over just will not fire up owner drove truck to location shut it off did his farming and truck will not crank up now… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,239 satisfied customers
I have an 05 pete with a C15 Acert. The truck misses very
I have an 05 pete with a C15 Acert. The truck misses very bad and blows more black smoke at an idle than a freight train. The codes flashing are low voltage to all the injectors. I've replaced inside … read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,239 satisfied customers
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Meet the Experts:

Daniel Wilson

Daniel Wilson

4,737 satisfied customers

Owner at DJ Wilson

Cat Man

Cat Man

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I am ASE Master Truck Certified.

Wayne

Wayne

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

Jeremy

Jeremy

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ASE Med/HD Truck Technician, NATEF Diesel Engines and Electrical/Electronics Technician, Network Engineer specializing in CAN faults, Aftertertreatment, and vehicle communications

cumminsdr

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Curtis B.

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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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