Medium and Heavy Trucks

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Related Medium and Heavy Trucks Questions
I have a c16 CAT I just left the dealer from putting in an
I have a c16 CAT I just left the dealer from putting in an oil cooler, 45 mins into the ride oil temp and water temp are running higher than normal operating temp. Only running a load weighing 19k it … read more
Wayne
Wayne
Journeyman
Vocational, Technical or Trade Scho
4,023 satisfied customers
My oil temp getting high up 220, I change oil coler still
hi my oil temp getting high up 220, I change oil coler still same … read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,220 satisfied customers
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
3 satisfied customers
Peterbilt 2004 379 bxs 10888 cat c15 -problem is engine when
peterbilt 2004 379 bxs 10888 cat c15 -problem is engine when running down road at cruise, engine will cool to about 150 degrees. sit at loading dock and idle will run about 190. pull a hill will come … read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,220 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
10,220 satisfied customers
I have a 99 Peterbilt 379 with a CAT C 12 engine that's over
I have a 99 Peterbilt 379 with a CAT C 12 engine that's over heating. I have replaced EVERYTHING and it continues to over heat only while loaded and going up a hill. Also only during the summer when t… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,220 satisfied customers
Can you put acert water pump on single turbo c15. Cat
2001 Pete 379. Wondering if acert high volume pump would better cool my non acert cat… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,220 satisfied customers
I have an O7 Freightliner where is a C15 acert twin turbo at
I have an O7 Freightliner where is a C15 acert twin turbo at 475 horse I've driven it over 300,000 miles recently I had an overheating issue and it cos they had to crack and I had it in the shop and I… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,220 satisfied customers
My c15 temperature gauge says that the engine is running
My c15 temperature gauge says that the engine is running around 220 degrees and the cooling fan is running all the time. But I can touch the engine and it doesn't feel hot, also the heater isn't very … read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,220 satisfied customers
I have a 2009 cascadia dd15, temp,. fan comes on at 220
i have a 2009 cascadia dd15, hi temp,. fan comes on at 220 -225 replace coolant 2x in a week, water pump, water temp sensor, fan sensor solenoid, thermostat all this in one week, and still fan wont st… read more
Jeremy
Jeremy
Certified Truck/Bus Technician
Associate Degree
2,740 satisfied customers
Cat Man, I have a 03 6nz. 100,000 miles on it after
Hello Cat Man, I have a 03 6nz. 100,000 miles on it after a out of frame. I have an overheating problem you have already gave me suggestions on. . I've checked my oil cooler, cleaned my radiator and a… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,220 satisfied customers
Hey Cat Man. I have a 2003 pete with a c15 6nz in it. It runs
Hey Cat Man. I have a 2003 pete with a c15 6nz in it. It runs great with no water or oil loss since an out of frame 115,000 miles ago. Since the rebuild it's ran hot. I've replaced the radiator and th… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,220 satisfied customers
2005 kenworth t800 log truck with c-15 twin turbo catmy
2005 kenworth t800 log truck with c-15 twin turbo cat my problem is my water temperature lately I can get any temperature out of it ,on the flats its lucky to get to much over 50 deg , but when pullin… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,220 satisfied customers
I have a c15 cat that wont get over 150 degrees. I replaced
I have a c15 cat that wont get over 150 degrees. I replaced both thermostats and seals, bled air from the system, and still have the same problem. It is a single turbo 6NZ motor. Any ideas?… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,220 satisfied customers
1) I have a 2008 c15 acert with bully dog gt under normal
1) I have a 2008 c15 acert with bully dog gt under normal driving the engine temp runs at 135 pulling hills it will run to 210 and the fan will then kick on (started after engine was rebuilt) 2) also … read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,220 satisfied customers
Got a friend on the road in East Tx. Just picked up his stranded
Got a friend on the road in East Tx. Just picked up his stranded w900. C15. Drove 28 miles empty. Heated up enough to turn lights on but not shut down. Water level if full. No signs of making oil or b… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,220 satisfied customers
06 4300 dt 466 , new surge cap, water pump, radiator, fan clutch,
06 4300 dt 466 , new surge cap, water pump, radiator, fan clutch, thermostat, hoses, belt, and still runs hot at 65 empty. Turn of AC and it drops to 200. 220 or 230 at. 65 empty. Run 55 with AC and i… read more
Wayne
Wayne
Journeyman
Vocational, Technical or Trade Scho
4,023 satisfied customers
I have a Pete 387 cat 435 c15 with 608000 miles my oil temp
I have a Pete 387 cat 435 c15 with 608000 miles my oil temp gauge is running 210/220 with fan running my hoses running across valve cover is melting what is causing this to happen… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,220 satisfied customers
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Meet the Experts:

Daniel Wilson

Daniel Wilson

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Wayne

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

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

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Curtis B.

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Chris (aka-Moose)

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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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