Medium and Heavy Trucks

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I have a 04 pete 379 couple years ago it started running
I have a 04 pete 379 couple years ago it started running warmer than normal empty or loaded like it wasn't getting any air but I could flip my fan on and it would cool right back down, so I broke down… read more
james Roberts
james Roberts
Maintenance assistant
Vocational, Technical or Trade School
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MBN C15 skipping on number when hot under a load... new
MBN C15 skipping on number when hot under a load... new injector harness motor horness and new injector … read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
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C 15 mbn smoking and has a hiss noise consistent with engine
C 15 mbn smoking and has a hiss noise consistent with engine speed. Smoke smells like fuel. When I fired it up it smoked white then blue. I checked the oil. No coolant in the oil. … read more
Wayne
Wayne
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Vocational, Technical or Trade Scho
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I'm working on a 2005 w900 with a cat c15, i have a code for
I'm working on a 2005 w900 with a cat c15, i have a code for the oil pressure control valve and the engine fan is stuck on. Could that valve be keeping the fan on if it's bad? … read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,216 satisfied customers
I've got a c15 mbn that will hunt and very in engine rpm
Hi I've got a c15 mbn that will hunt and very in engine rpm from(###) ###-####rpm , … read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,216 satisfied customers
I need to get some power on a c-15 MBN engine. Now, i have
Hi, i need to get some power on a c-15 MBN engine. Now, i have 475 hp on 1650 torque power. I have some flash file dvd by caterpillar, but without description on hp and torque. I would have 500 or 550… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,216 satisfied customers
Mbn c15 no power fuel psi at wot 90 psi at idle 80 psi gauge
Mbn c15 no power fuel psi at wot 90 psi at idle 80 psi gauge bounces … read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,216 satisfied customers
I have a 2004 c15 MBN that keeps throwing a crank signal
I have a 2004 c15 MBN that keeps throwing a crank signal Fault and engine oil pressure fault I have changed both of them truck runs fine but throws both flats every once in awhile miss fires wondering… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,216 satisfied customers
C15 cat just done major over haul on engine fan want stop
C15 cat just done major over haul on engine fan want stop running put on computer say engine temp 193 on cold engine what wrong … read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,216 satisfied customers
Cat man. I have a c15 that will not engage clutch fan when
Hello cat man. I have a c15 that will not engage clutch fan when coolant temp reaches high temp. Fan will come on manually with switch and comes on with a/c. Temps climb to atleast 220. New temp switc… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,216 satisfied customers
have a 2000 fld120 vin# ***** engine fan dont come on with
have a 2000 fld120 vin# ***** engine fan dont come on with engine temp comes on with ac , jake brakes can unplug temp sensor and will stay on have changed temp sensor reparied some bad wiring on harne… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,216 satisfied customers
working on c15 e/n mbn 10972 in a 2003 pete and eng cooling
working on c15 e/n mbn 10972 in a 2003 pete and eng cooling fan won come on even at 218. r&r sensor at ther housing. also cant comunacate with ecm… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,216 satisfied customers
I have a C15, I'm not getting any codes but truck is flashing
I have a C15, I'm not getting any codes but truck is flashing the water temp light and shutting itself off. Do you know what the problem can be?… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,216 satisfied customers
I have a 2003 Pete with a C-15 that the ecm ESN doesn't
I have a 2003 Pete with a C-15 that the ecm ESN doesn't match the stamp on the engine. How do i go about changing this? ecm ESN- MBN05367 engine ESN-6NZ20374. I would also like to know the max HP/ tor… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,216 satisfied customers
Hello, What's the best way to break in a new c15 engine? Do
Hello, What's the best way to break in a new c15 engine? Do I use any special oil ? Thanks… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,216 satisfied customers
I am working on a Caterpillar engine, C15 - Sn#6NZ01357. Using
I am working on a Caterpillar engine, C15 - Sn#6NZ01357. Using Cat ET, is there a way to program the temp that the engine cooling fan turns on? Cant get the fan to come on, let the engine get to 215 a… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,216 satisfied customers
Hello.. Do you have the the engine fan wiring diagram for a
Hello.. Do you have the the engine fan wiring diagram for a 2007 international with a c15? Truck VIN# XXXXX engine Ser.No MXS75083… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,216 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
10,216 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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