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
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james Roberts
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Thermostat JA: What is the complete model and serial number of your machine? Customer: C15 caterpillar 6nz JA: Sometimes things that you think will be really complicated end up being easy to fix. The … read more
james Roberts
james Roberts
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A mechanic just replaced an engine in my 4700 International.
A mechanic just replaced an engine in my 4700 International. It's a DT466 mechanical engine. The engine was used but we put a new head gasket, water pump and thermostat on engine. I can drive it only … read more
Andy
Andy
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Cummins isx9.. replaced t stat and pressure tested system.
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Jackie Dempsey
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I got a 2009 c15 sdp19638 When you start it cold kind of
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Wayne
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I have a truck in the shop that we have changed the
I have a truck in the shop that we have changed the thermistors on and we have evacuated and filled the system with the correct amount of Freon. to fill the system we had to jumper the clutch to make … read more
Daniel Wilson
Daniel Wilson
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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
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I have a 3406e 550 5ek motor it runing rough and missing and
I have a 3406e 550 5ek motor it runing rough and missing and smoking both at an idiol and under a load replaced 2 injectors because the 1 and 6 holes where running coldder tgen tge rest used a infra r… read more
Cat Man
Cat Man
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I have a 2005 frightliner fld with 4000 mercedes benz. My
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Andy
Andy
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I have a 2003 pb379 the a/c compressor won't cycle. I have
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I have 2 questions, 2002 cat c15 engine fans is staying on,
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Daniel Wilson
Daniel Wilson
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Cat Man
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Alex. I got the fan gear drive changed out on my 2011 pro
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The fan doesnt come on with jakes or when engine temp is hot
the fan doesnt come on with jakes or when engine temp is hot in our 1998 peterbilt 378 with a 3406e … read more
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Got a series 60 engine that was fully rebuilt last year
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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
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M-11 Cummings in a 1990 Volvo I have owned 9 years always
M-11 Cummings in a 1990 Volvo I have owned 9 years always ran cold 160-170 tops and now water buzzer going off changed t-stat and water pump did not help. Front of motor at 160 degrees and back or #6 … read more
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I have a 2002 Peterbilt 379 ext hood with a 500 ISX. The engine
I have a 2002 Peterbilt 379 ext hood with a 500 ISX. The engine cooling fan has quit kicking on and off by itself. It does work when engaged by the switch on the dash. There are 3 sending units on the… read more
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Meet the Experts:

Daniel Wilson

Daniel Wilson

4,737 satisfied customers

Owner at DJ Wilson

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I am ASE Master Truck Certified.

Wayne

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

Jeremy

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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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