Medium and Heavy Trucks

Have truck repair questions? Ask an Expert

Connect one-on-one with {0} who will answer your question

Related Medium and Heavy Trucks Questions
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
I have a 2007 international paystar with a cat c15 engine in
I have a 2007 international paystar with a cat c15 engine in it. I can't get the coolant temp up above 180 degrees even when working hard all day. My first thought is thermostats. … read more
Mike Mcmillan
Mike Mcmillan
Triage Tech/Shop Foreman
Associates
414 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
2207 Pete w/ 2006 ISX 475.. 2007 Pete 386 W/2006 ISX 475.
2007 Pete 386 W/2006 ISX 475. After warming up truck and driving 3 miles empty truck will heat u to190. When arriving to get loaded after 3 miles and While idling it heats up to 200.. Sometimes drops slowly to 195 sometimes fan has to kick on. Once loaded and I drive maybe 2 blocks at 20 miles an hour heats up to(###) ###-####and fan kicks in and brings temp down will do this non-stop until I hit highway. Once on highway after another climb of to 200-205 I can drive for about 3 miles and temp will come down to 180 maybe even 175 by itself... As soon as I get off highway and start slowing down. Temp will start to rise all over again... NOW! Even when empty sitting still temp will be 180 and I start driving temp climbs right away.. even on Highway empty it will do same thing as when loaded.. I did not think that my temp should climb while empty.... If I ride empty or loaded with a/c on temp never moves it stays 180-193.. Cooling Fan cycling maybe every couple of minutes... I have new clutch fan, new coolant, new therm, new low temp sensor and new temp sensor new EGR.. Let me add... I have never seen temp drop by itself with out assistance of fan or driving 70. miles hour down highway... I fill tank until it is past glass. and never have to add.. but lately I have been filling to very top and it will kick it out of overflow until it is above sight glass... Radiator need to be purged? Clogged Radiator Fins? New radiator? No codes … read more
Eddy
Eddy
HD Truck Tech
GED
2 satisfied customers
Have a c15acert cat engine! It runs HOt does not use water
Have a c15acert cat engine! It runs HOt does not use water doesn't use oil ! Have cleaned all rads,air to air, air conditioners, changed thermostats , water pump , checkout all hoses for blockages, ad… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,220 satisfied customers
Code 174-3 says fuel temp to gh replaced sensor and same
code 174-3 says fuel temp to high replaced sensor and same thing fan was not working changed air valve on frame now fan works but wont go off… read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
4,737 satisfied customers
my c15 temp guage is readiding 245 on the guage my fan is staying
my c15 temp guage is readiding 245 on the guage my fan is staying on constant andwhen I checkthe temps with a laser thermometer it reads 180 on the radiator and turbos 325 and oil pan 200 im just rese… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,220 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
10,220 satisfied customers
I have a 1988 international 9370 has cummins ntc855 need to
I have a 1988 international 9370 has cummins ntc855 need to change thermostats could you give me the procedure thank you… read more
spankyjr1
spankyjr1
Retired
Vocational, Technical or Trade Scho
420 satisfied customers
Answers from Two Experts requested: 2008 Fleetwood Discovery motorhome with Cummins 6.3ISL
2008 Fleetwood Discovery motorhome with Cummins 6.3ISL; has about 20k miles now. Have pulled a 6T trailer for years without any trouble relative to coolant temp, all of a sudden any hill I have to cli… read more
Don
Don
fleet superintendent
Vocational, Technical or Trade Scho
1,636 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
10,220 satisfied customers
When I start the engine, black soot flakes spew out of the
When I start the engine, black soot flakes spew out of the dry exhaust stack momentarily, especially if the engine has not been run for weeks. This engine is used for commercial fishing. It is run at … read more
Curtis B.
Curtis B.
Technician
Associate Degree
1,571 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
international navastar 4300: What would make antifreeze come
What would make antifreeze come out of the cap on the surge tank on a 4300 international navastar with a dt466 engine? I have replaced cap and pressure tested for 10 minutes at 11 psi and no leaks. It… read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
4,737 satisfied customers
What should the coolant temp bein a 2004 Pete with a C-15 when
What should the coolant temp bein a 2004 Pete with a C-15 when driving down the road without a load?… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,220 satisfied customers
hi, I have a Caterpillar C15 435hp biturbo. The engine has
hi, I have a Caterpillar C15 435hp biturbo. The engine has 760,000 miles. 10 days ago i found out that i have air coming out of the overflow hose on my radiator. First i checked the oil and it was cle… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,220 satisfied customers
Hino 238: i am working on a 2007 hino 238, the truck keeps
i am working on a 2007 hino 238, the truck keeps overheating, I replaced the water pump and the thermostat but it keeps overe heating, what is my next step to resolve this issue. thanks… read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
4,737 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
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.

JustAnswer in the News:

Ask-a-doc Web sites: If you've got a quick question, you can try to get an answer from sites that say they have various specialists on hand to give quick answers... Justanswer.com.
JustAnswer.com...has seen a spike since October in legal questions from readers about layoffs, unemployment and severance.
Web sites like justanswer.com/legal
...leave nothing to chance.
Traffic on JustAnswer rose 14 percent...and had nearly 400,000 page views in 30 days...inquiries related to stress, high blood pressure, drinking and heart pain jumped 33 percent.
Tory Johnson, GMA Workplace Contributor, discusses work-from-home jobs, such as JustAnswer in which verified Experts answer people’s questions.
I will tell you that...the things you have to go through to be an Expert are quite rigorous.

What Customers are Saying:

Wonderful service, prompt, efficient, and accurate. Couldn't have asked for more. I cannot thank you enough for your help.

Mary C.Freshfield, Liverpool, UK

This expert is wonderful. They truly know what they are talking about, and they actually care about you. They really helped put my nerves at ease. Thank you so much!!!!

AlexLos Angeles, CA

Thank you for all your help. It is nice to know that this service is here for people like myself, who need answers fast and are not sure who to consult.

GPHesperia, CA

I couldn't be more satisfied! This is the site I will always come to when I need a second opinion.

JustinKernersville, NC

Just let me say that this encounter has been entirely professional and most helpful. I liked that I could ask additional questions and get answered in a very short turn around.

EstherWoodstock, NY

Thank you so much for taking your time and knowledge to support my concerns. Not only did you answer my questions, you even took it a step further with replying with more pertinent information I needed to know.

RobinElkton, Maryland

He answered my question promptly and gave me accurate, detailed information. If all of your experts are half as good, you have a great thing going here.

DianeDallas, TX

< Previous | Next >

Meet the Experts:

Daniel Wilson

Daniel Wilson

4,737 satisfied customers

Owner at DJ Wilson

Cat Man

Cat Man

Cat Engine Expert

10,220 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

< Previous | Next >

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.

Show MoreShow Less

Ask Your Question

x