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Related Medium and Heavy Trucks Questions
Help we are loosing water On 2006 Acert C15 cat engine in a
Help we are loosing water On 2006 Acert C15 cat engine in a 379 Peterbilt truck what could cause this I can't find the leak but it still is getting away… read more
NicholasM1019
NicholasM1019
Cummins/Caterpillar
Vocational, Technical or Trade School
421 satisfied customers
We have a C15 that is not overheating but is losing about a
We have a C15 that is not overheating but is losing about a gallon of water a day. It had a negative bottle test. Replaced the air compressor but it is still losing water. Cannot find any leaks … read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
5,234 satisfied customers
We have a 2005 Peterbilt 379 and im looking for a diagram on
We have a 2005 Peterbilt 379 and im looking for a diagram on how to hook up the 4 12v batteries. Also how to put the ecm back on … read more
Bradey V
Bradey V
Certificate
Check engine light is on and off. I check the flash code and
Check engine light is on and off. I check the flash code and it coming up “42” … read more
Cat Man
Cat Man
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Vocational, Technical or Trade Scho
5,234 satisfied customers
Have cat motor need some help. Dump truck 347000 miles. 2006
trying to determain wheather or not my oil pressure gauge is bad by using a manual gauge on the motor need help finding location where to connect gauge … read more
Wayne
Wayne
Journeyman
Vocational, Technical or Trade Scho
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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
210 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
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2002 379 pete c15 6nz cat .engine will not start without
2002 379 pete c15 6nz cat .engine will not start without either . has new fuel pump new injectors new cam and crank sensors new engine wiring harness new check valves new filter housing, new ecm. Has … read more
Edward Haniewski
Edward Haniewski
General Studies/Automotive
1 satisfied customers
The engine temp runs up to 212 degrees and fan isn't coming
The engine temp runs up to 212 degrees and fan isn't coming on. I replaced the fan trigger on the thermostat housing and checked the thermostats. I have a 170 and a 180 degree thermostats on it and th… read more
PATRICK WENSLEY
PATRICK WENSLEY
Associates Degree Of Applied Science
Got a c15 cat twin turbo. Fan clutch is locked up. I'm not
Hi! Got a c15 cat twin turbo. Fan clutch is locked up. I'm not getting power to the solenoid. The switch on the dash doesn't get power to it either but the light on the dash comes on … read more
Mike Mcmillan
Mike Mcmillan
Triage Tech/Shop Foreman
Associates
442 satisfied customers
I have an 05 pete with a c15 the fuel fliter gauge is max
i have an 05 pete with a c15 the fuel fliter gauge is max out and light is on if you shut it off it looses its prime and you have to prime the fuel system before it will start. We have changed filters… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
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Just in framed my mxs c15 last week its been about 600 miles
just in framed my mxs c15 last week its been about 600 miles and every time i pull a big hill loaded at 105k i lose about a gallon of oil out the blow by tube, which it did that before the inframe and… read more
Eddy
Eddy
HD Truck Tech
GED
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05 c15 getting oil in fuel tanks using a gallon of oil every
05 c15 getting oil in fuel tanks using a gallon of oil every 1000 miles … read more
Cat Man
Cat Man
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Vocational, Technical or Trade Scho
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I have a 2011 peterbilt with c15 cat it's losing coolant
I have a 2011 peterbilt with c15 cat it's losing coolant about 1 gallon per 100 miles it has no leaks it's not getting in the oil and not smoking … read more
Cat Man
Cat Man
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Vocational, Technical or Trade Scho
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2009 Peterbuilt Cummings 485 my Machanics can't find problem
2009 Peterbuilt Cummings 485 my Machanics can't find problem did oil change last two weeks ago and now it's wasting a gallon of oil every 450 miles everyday check engine lights comes on when low on oi… read more
cumminsdr
cumminsdr
Mechanic
High School or GED
1,700 satisfied customers
Have a 2004 peterbilt 379. There is voltage drop after it
have a 2004 peterbilt 379. There is voltage drop after it has been running for about 5 min with lights and cab equipment dimming or stopping. Engine continues to run. Replaced batteries and continues.… read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
4,737 satisfied customers
I have a 2007 Peterbilt 379 with a C15 engine that is losing
I have a 2007 Peterbilt 379 with a C15 engine that is losing a lot of antifreeze but does not have any visible leaks other than the drain tube from the reservoir. It is building high pressure, but is … read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
5,234 satisfied customers
I had a dyno done on an 08 C15. Blowby at 1900 RPM was 9 (in
I had a dyno done on an 08 C15. Blowby at 1900 RPM was 9 (in H20) At 1700 RPM it was down to 6. 1300 it was 4. Is this normal? Also, the dyno had HP and also a C_VPwr. I know this is corrected HP, but… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
5,234 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

Cat Engine Expert

5,234 satisfied customers

I am ASE Master Truck Certified.

Wayne

Wayne

Journeyman

4,023 satisfied customers

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

Jeremy

Jeremy

Certified Truck/Bus Technician

2,740 satisfied customers

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

cumminsdr

cumminsdr

Mechanic

1,700 satisfied customers

All types of Cummins applications

Curtis B.

Curtis B.

Technician

1,571 satisfied customers

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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