Medium and Heavy Trucks

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Related Medium and Heavy Trucks Questions
I got a check engine light on while driving down the road,
Hello, I got a check engine light on while driving down the road, it stays on for about five seconds and blinks and does it again, temperature levels are good and oil pressure is good Cat C15 engine … read more
Nich1019
Nich1019
Diesel Technician
Vocational, Technical or Trade School
97 satisfied customers
2012 Freightliner Cascadia Isx15 Spn 157 Fail 16 popped up a
2012 Freightliner Cascadia Isx15 Spn 157 Fail 16 popped up a week ago technician helped me figure out it was a o-ring on my fuel pump actuator. I replaced both o-rings with what I had at hand and it s… read more
Nich1019
Nich1019
Diesel Technician
Vocational, Technical or Trade School
97 satisfied customers
J just bought a used 07 kenworth t600 with a c15 cat.. the
Hello j just bought a used 07 kenworth t600 with a c15 cat.. the truck ran great when i went to pick it up empty. I hooked up the trailer and the abs light came on and I could not go over 1500 rpm and… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,344 satisfied customers
I have a 2006 t800 with a cat c15 motor. I had a complete in
I have a 2006 t800 with a cat c15 motor. I had a complete in frame done at 1,225,000 miles. It now has 1,485,000 miles. It has been using 1 gallon of oil every 5000 miles right after oil change and th… read more
Mike Mcmillan
Mike Mcmillan
Triage Tech/Shop Foreman
Associates
616 satisfied customers
I have a 2004 Peterbilt 379 with a C15 Cat engine. When in
I have a 2004 Peterbilt 379 with a C15 Cat engine. When in neutral it will rev up fine but when going down the road it won't rev past 1700rpm. At times it will run great but after a while the trouble … read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,344 satisfied customers
I've got a 3406 e lots of blue smoke a lot of power loss. It
I've got a 3406 e lots of blue smoke a lot of power loss. It runs good for awhile then starts missing and blue smoking. Engine was rebuilt one year ago ran fine until the last few weeks. I put all 6in… read more
Wayne
Wayne
Journeyman
Vocational, Technical or Trade Scho
5,115 satisfied customers
We think we didn't install my flywheel correctly on my MXS
We think we didn't install my flywheel correctly on my MXS c15- how do we visually find TDC on #1 without pulling the injector? We're running the overhead … read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,344 satisfied customers
I had my ECM replaced a week ago. About 20 miles after
I had my ECM replaced a week ago. About 20 miles after replacing the ECM my check engine light started flashing. The mechanic thought maybe he knocked an actuator valve wire loose under the back valve… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,344 satisfied customers
Have a question. 06 kenworth t600 cat c15 mxs. Myself. The
the engine was rebuilt 4 months ago now it is pushing coolant out of the radiator but not always… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,344 satisfied customers
I am I had a c15 rebuilt it has 40 thousand miles on it now
Hi I am pat I had a c15 rebuilt it has 40 thousand miles on it now iam getting a lot of crank case pressure if I don't keep tie raps on front filler cap it blows out going down the road lost the first… read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
6,062 satisfied customers
I have a c15 mbn single turbo with 1.4 million miles on it
I have a c15 mbn single turbo with 1.4 million miles on it that hasn't been touched. Original bearings, head has never been off. Injectors are original also except for #4 injector. It burns 1 gallon o… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,344 satisfied customers
Catman, I asked you a question a few weeks ago regarding
Hey there catman, I asked you a question a few weeks ago regarding a “crank but no start” problem on a cat C15. It seems to be happening again. The truck in question is a 2007 peterbilt 379 (674827) c… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,344 satisfied customers
I have at cat c15 in a o4 peterbilt. Flash codes 72,73,74 but I have a new Ecu with new wi
I have at cat c15 in a o4 peterbilt. Flash codes 72,73,74 but I have a new Ecu with new wire harness about 100k ago. Injectors were not replaced in the overhaul to my knowledge. The truck is an acert … 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
I have a 2007 c-15 accert changed out ecm two weeks ago, in
I have a 2007 c-15 accert changed out ecm two weeks ago, in the last couple of days check engine lite has come on then shut off, under load the truck misses and spits and sputters with no power, empty… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,344 satisfied customers
I have a c13 twin turbo it has a problem with the #1 valve
I have a c13 twin turbo it has a problem with the #1 valve actuator....the motor use to run well and it would then show engine light and begin running rough... I would shut off key wait and start engi… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,344 satisfied customers
Just bought 2007 Kenworth T2000 C15 Feb 1st 2014 Truck ran
Just bought 2007 Kenworth T2000 C15 Feb 1st 2014 Truck ran fine till Nebraska alternator started making 16 volts then not charging, replaced alternator. Truck ran fine to Chicago, parked it overnight,… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,344 satisfied customers
I have an 05 Century, C15, V57746. I am getting a low voltage
I have an 05 Century, C15, V57746. I am getting a low voltage warning buzzer while under power going down the road. Does not happen with idling. Alternator is new, Batteries less land 6 month (electri… read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
6,062 satisfied customers
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Meet the Experts:

Daniel Wilson

Daniel Wilson

6,062 satisfied customers

Owner at DJ Wilson

Cat Man

Cat Man

Cat Engine Expert

10,344 satisfied customers

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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2,756 satisfied customers

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

Curtis B.

Curtis B.

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Technician turned service manager on multiple lines of trucks and engines, used in industry.

cumminsdr

cumminsdr

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All types of Cummins applications

Chris (aka-Moose)

Chris (aka-Moose)

Technician

641 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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