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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Truck running too cool. C15 6nz had thermostat replaced.
Truck running too cool. C15 6nz had thermostat replaced. After warmup, takes 20 miles to get temp to 190. Temp drops 15 degrees going thru a small town, then it will pick back up in few miles. At 800 … read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
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Cat Man, I'am working on a 2004 CAT Accert C15 engine.The
Hi Cat Man, I'am working on a 2004 CAT Accert C15 engine.The ESN is BXS07917. It is pushing engine anti freeze out of the resivoir when the engine coolant temperature reaches 170 degrees farenheit. It… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,221 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
10,221 satisfied customers
I have a Perkins 4.108 diesel in a sailboat. It has just
hello. I have a Perkins 4.108 diesel in a sailboat. It has just been rebuilt. The engine did not get hot when it was idling. It would only get hot if it was working hard. The engine heats the hot wate… read more
Curtis B.
Curtis B.
Technician
Associate Degree
1,571 satisfied customers
I have a 6NZ 550 cat. About 6 months ago I had, what I
I have a 6NZ 550 cat. About 6 months ago I had, what I thought at the time, a water thermostat stuck open. I replaced both thermostats and all housing seals. 2 months later it started same thing. I ha… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,221 satisfied customers
I HAVE A PERKINS DIESEL MODEL NUMBER 1004-40T SERIAL NUMBER
HELLO, I HAVE A PERKINS DIESEL MODEL NUMBER 1004-40T SERIAL NUMBER AK70453. THE ENGINE WILL START AND RUN CORRECTLY FOR A SHORT AMOUNT OF TIME. THEN THE ENGINE WILL SHUT ITSELF DOWN WITH A PUFF OF WHI… read more
Curtis B.
Curtis B.
Technician
Associate Degree
1,571 satisfied customers
We have a 3304 Cat that runs a pump. Recently it has started
we have a 3304 Cat that runs a pump. Recently it has started to build coolant pressure, and at idle tends to overheat, then cools back down at higher rams; we have changed the thermostat and water pum… read more
Curtis B.
Curtis B.
Technician
Associate Degree
1,571 satisfied customers
I have a 2007 f650 with a 5.9 that gets hot on occasion.
I have a 2007 f650 with a 5.9 that gets hot on occasion. When it does it the check and stop engine light comes on and pegs the gauge and blows water out the overflow. You can let it sit for 10 or 15 m… read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
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My truck is a 2001 CH 613 Mack with 427 engine and I am
My truck is a 2001 CH 613 Mack with 427 engine and I am getting air in my water system, pushing my water out of hoses and everything … read more
Curtis B.
Curtis B.
Technician
Associate Degree
1,571 satisfied customers
Have a 8150 massey that is pushing anti-freeze out of over
hello , have a 8150 massey that is pushing anti-freeze out of over flow , possible problems , clutch-fan going bad , water pump , or possible head gasket ? any thoughts would be helpful thanks neil… read more
Curtis B.
Curtis B.
Technician
Associate Degree
1,571 satisfied customers
I have a 3406 have a new head and had bottom half redone all
I have a 3406 have a new head and had bottom half redone all new liners motor ran great was sitting for a while then 1 at day an hour driving it started smoki g white got hydro locked I found out old … read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,221 satisfied customers
The engine is a 29 hp Perkins Diesel in a sailboat. We took
The engine is a 29 hp Perkins Diesel in a sailboat. We took it out for a sea trial and at about 3350 it went up to 200 . It held there. At about 2850 it went down to 190 and stayed there at 2500 it wa… read more
Curtis B.
Curtis B.
Technician
Associate Degree
1,571 satisfied customers
2003 cat 6nz has 130000 miles on total overhaul and I have
2003 cat 6nz has 130000 miles on total overhaul and I have never been able to get it run warm uasually runs round 170 degrees I have changed thermostats to 190 degree and couple days ago it was pullin… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,221 satisfied customers
i have 3406e cat engine 475hp. i am loosing antifreeze not
i have 3406e cat engine 475hp. i am loosing antifreeze not all the time,i can see water and steam coming from blow by hose two fill caps got that jellow paste like yet oil on dip stick remain clean af… read more
Wayne
Wayne
Journeyman
Vocational, Technical or Trade Scho
4,023 satisfied customers
UD 1400: MY NAME ISXXXXX HAVE A 1994 UD 1400 WITH A TD42T
MY NAME ISXXXXX HAVE A 1994 UD 1400 WITH A TD42T MOTOR AND THE MOTOR I CONSUMING OIL INTO THE COOLING SYSTEM WE ALREADY CHANGED THE COOLER AND IT IS STILL HAPPENING… read more
spankyjr1
spankyjr1
Retired
Vocational, Technical or Trade Scho
420 satisfied customers
we have a 2007 cab over with a 5.2, the cooling system builds
we have a 2007 cab over with a 5.2, the cooling system builds pressure very quickly, the engine temp will go as high as 248, the fan just pulls cold air thru it, the radiator highest temp we could get… read more
Curtis B.
Curtis B.
Technician
Associate Degree
1,571 satisfied customers
I have a running hot problem with my truck (1989 FF177 L )
I have a running hot problem with my truck (1989 FF177 L ) Ho7c motor. It doesnt boil it just goes to the top of the operating range a then drops down. If I keep my eye on the gauge its allrght but I … read more
JCTech
JCTech
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Vocational, Technical or Trade Scho
352 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

10,221 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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ASE Med/HD Truck Technician, NATEF Diesel Engines and Electrical/Electronics Technician, Network Engineer specializing in CAN faults, Aftertertreatment, and vehicle communications

cumminsdr

cumminsdr

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All types of Cummins applications

Curtis B.

Curtis B.

Technician

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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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