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
I got a 3406E with a 208 thermostat and its been about
I got a 3406E with a 208 thermostat and its been about 80s-90s and temp has been running 205-210 and fan hasnt been kicking on till 212-213 and was wondering if that was normal or bad sending unit or … read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,216 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
10,216 satisfied customers
I have an 06 freightliner with a c15, it is pushing coolant
I have an 06 freightliner with a c15, it is pushing coolant out of resovoir at idle and after truck is shut off, but not while driving or under a load, changed the air compressor not sure what it coul… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,216 satisfied customers
C15 acert engine light with code 93(actuator 3 is not
C15 acert engine light with code 93(actuator 3 is not responding) I already replaced actuator 3 twice, new harness, switched actuator mount 3/4 to 1/2,ECM replaced and the light still, after turning m… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,216 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
10,216 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
I have a 2003 379 c15 6nz. My oil tempos at 220 with a new
I have a 2003 379 c15 6nz. My oil tempos at 220 with a new teltek gauge and sensor. My water temp shows around 220-225 when working the motor is working hard. I thought it sounds high. Have new thermo… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,216 satisfied customers
Got n14 engine. weird things happened with cooling system.
Hey, Got n14 engine . weird things happened with cooling system. … read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
4,737 satisfied customers
My freightliner Classic with cat 6nz fan won't come on
My freightliner Classic with cat 6nz fan won't come on automatically I have to manually turn on from fan switch on the dashboard … read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,216 satisfied customers
Buddy, I have a 2007 Columbia X35320, with a 14 liter 475 hp
Hi buddy, I have a 2007 Columbia X35320, with a 14 liter 475 hp series 60. The problem I'm having has cost a lot of money and know one seems to be able to figure it out. Loaded or empty on any kind gr… read more
Expert
Expert
7,468 satisfied customers
2004 Peterbilt w/C15 Acert (BXS) Okay i finally got fan
2004 Peterbilt w/C15 Acert (BXS) Okay i finally got fan situation figured out and it now cycles on @ 217 and off @206 like it should. BUT now when it gets hot (230 i believe) the buzzer comes on and "… 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
2004 Peterbilt 379 w/C15 acert fan will not turn on with
2004 Peterbilt 379 w/C15 acert fan will not turn on with switch in "auto". Gets up to 225-230 with no warning light or buzzer. It just started doing this about a week ago. Prior to that it kicked on a… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,216 satisfied customers
. Just rolled 1.1 million miles on my 475 hp acert in
Hello. Just rolled 1.1 million miles on my 475 hp acert in an 05 pete 379. I bought it at 570k miles from my dads rigging company in CA. It has been a VERY reliable engine for me. I have several ???s … read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,216 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
10,216 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 have a c15 acert. I have a fault code 27. However I did
I have a c15 acert. I have a fault code 27. However I did replace the temperature switch located on the bottom of the termostate cage. Also I replaced the plug The fan is on all the time ? I check the… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,216 satisfied customers
1996 pete with a 3406e. Fan will not come on when under load,
1996 pete with a 3406e. Fan will not come on when under load, the fan will cycle when stopped with brakes applied. Have changed fan stat and no difference. should kick in around 215, but will climb to… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,216 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

10,216 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